There are 817 ratings for the drug: SINGULAIR in the Askapatient database.

Key to ratings for singulair: 5-Very Satisfied: this medicine cured me or helped me a great deal. 4-Satisfied: this medicine helped. 3-Somewhat Satisfied: this medicine helped somewhat. 2-Not Satisfied: this medicine did not work to my satisfaction. 1-Dissatisfied: I would not recommend taking this medicine.

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Rating	Reason	Side Effects	Comments	Sex	Age	Time Taken and Dosage		Date Added
				F  M
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1	asthma		caused seizure and confusion	F	89			10/2/2007
3	asthma/allergies	extreme constipation, serious dry mouth, could not sleep more than 15 minutes at a time without drinking water.	The first two or three days on singulair I thought it was a wonder drug. Suddenly I realized that I was hardly sleeping and when I did sleep it was for short times. The constipation kept me feeling full and uncomfortable. I had leg cramps at night. I stopped taking it about a week ago and I am my normal self again. I sometimes wonder if a smaller dose (i.e. 5mg. a day) would be better for me. But I am not sure that I am willing to try it.	F	73	2 weeks		11/11/2007 Email
1	Asthma	Depression, loss of mental clarity, memory problems, inability to focus and concentrate, huge weight gain, bloated, look pregnant, heartburn, severe shortness of breath, lethargy, lack of interest in anything	The mental and emotional suffering - not overstated - makes singulair not worth any possible benefit. I had to leave my work because of severe shortness of breath. Have been seeing a psychiatrist who has me on antidepressants and something to keep me awake during the day. Another doctor has me on something to control the restless-leg syndrome that another singulair patient mentions. My weight gain probably contributes to my depression, and my distended abdomen probably interferes with my breathing. The 5 years I've been on singulair have been miserable. I am so thankful to have found this site. Today is April 3, 2008, and last night is the last time I will take singulair. I can't wait to see how I will be next week, next month.	F	73	5 years		4/3/2008 Email
1	i am 73 and have taken it forever	I started noticing unusual depression thoughts of suicide and so unlike my personality I feel so much better since stopping it, I think it might be a dangerous drug.		M	73	8 days		4/15/2008
1	asthma, COPD	Depression, weight gain (40 lbs. in 4 months), restless leg syndrome, mental fogginess	I wrote on April 3, 2008, and mentioned that the previous night would be my last dose. It's now a little over 3 months later, and I have lost 20 pounds and don't need the antidepressant, restless leg, and "wake-up" meds. Am desperate to find something now to help my breathing, but I'll NEVER take singulaire again.	F	73	5 years		7/15/2008 Email
2	allergic rhinitis	dizziness, dryness		M	72	90 days		11/24/2008
1	allergies	Had severe acid reflux. Had no idea it was linked to this medication.	Took this medication for 3 years and I stopped taking it because of the cost and noticed within a week the acid reflux was gone. I had been taking 40mg of protonix twice a day and it did not even help. I had never had any problem in all my life, not even gas or burping. This was a horror!!	F	72	3 days		3/30/2008
5	Mild asthma	None	Taking 40 mg daily for past 5 years	M	67	5 years		7/31/2007 Email
1	asthma & seasonal allergies	Insomnia, leg cramps, restlessness, inability to focus	I will never take this medication ever again. I would also strongly discourage anyone I know from taking it.	F	67	30 days		7/14/2009
5	allergies/chronic sinus infections	none	I plan to drop my use of Singulair because of all the current negative reviews about it. I also take flonase and allegra (generic of both) and I hope these two drugs will "hold" my allergies in check.	F	66	5 years		4/1/2008
1	Allergies and asthma	Difficulty sleeping, bad muscle cramps, mood swings, very irritable, depressed.	Though it helped with allergies and improved my breathing a little it was not much better than a generic allergy pill and definitely not worth taking in light of the side effects.	M	66	5 months		8/1/2007
1	ENT specialist doctor said to	itching, unsteady walking, shaky heart, dizzy, eyes dry and blurry, heartburn, less sleep, exercise causes nauseous feeling from teeth to chest, thirsty/urination changes, some mood changes, random breathing difficulty fine motor control especially fingers, concentration, hallucinations (smelling things not there), shortness of breath, yada yada	many many side effects. had to stop almost all current supplements and rx. some effects possibly due to interactions with other rx same doc prescribed with singulair. - going back to family doctor and getting off singulair and others the ENT prescribed. specialist did too much too fast without regard to age, other conditions, and my TOTAL health.	M	66	14 days		5/6/2007
5	asthma	I have been very sleepyin the daytime since taking this medicine. I wonder if that can be a side effect. I have taken it for two months.		F	65	40 days		9/12/2004
4	for asthma	insomnia. This is a real problem. Also 20# weight gain. I have been the same weight for the last 45 yrs (except when pregnant), but now gained weight even though I am eating less and excersize more. Fat around belly.	It does help my asthma--- thus my rating. I would like to know if any adult female has experienced bone loss since taking Singulair?	F	65	3 days		12/18/2007
5	severe asthma	None	It has changed my life for the better. I can now breathe and be active, walk, play golf etc. I was steroid dependent prior to taking Singulair. It has been a miracle drug for me.	F	64	11 years 10 mg 1X D		4/12/2010
5	for severe asthma	None that I know of.Am tired during the day but not sure if that is due to Singulair. Will taking it at night decrease its effectiveness during the day?	I take Pulmicort every morning but was using Maxair, the rescue inhaler, as often as 12 times EVERY DAY and sometimes more often. Since taking Singulair for the past few years, I use the rescue inhaler maybe once a month, often less! Singulair has greatly improved my life.	F	64	4 years		3/13/2006 Email
2	Allergic asthma, chronic rhinitis	Restlessness and irritability, mood change (frequent feelings of anger), nausea, mild swelling of lips and tongue, sudden fatigue/sleepiness.	Began taking Sigulair because of allergy induced bronchitis and chronic rhinitis. Also took Asmanex. Within a couple of days the bronchitis cleared up, breathing improved and the nasal symptoms improved. Stopped coughing and sneezing, reduced itchy eyes and nose. Almost immediately I experienced nausea and mild swelling of lips and tongue. After a week I began to notice sleepiness, fatigue, and irritability. Stopped taking the Asmanex. After two or three weeks I noticed that I felt a pervasive sense of anger and sometimes sudden rage in addition to the other symptoms. I am rarely angry and almost never rageful. I have decided to stop taking Singulair even though it has really helped me.	F	64	4 weeks		3/4/2007
1	sinus infections/allergies	Since starting 4 months ago, my shoulders and upper body muscles have become so terribly painful that I can barely turn over in bed. I also have a dry cough.	I do think it helped with my allergies	F	64	4 months		2/24/2007
1	general allergic reaction	Knee pain that made me fear having a tumor in my knee, arthritis or a knee injury; gross water retention after a week	Instead of reducing inflammation, it caused pain so severe in the knee that it hurt to walk	F	64	15 days 39 1X D		7/24/2010 Email
1	Chronis sinusitis and Asthma	sadness,mood swings	I thought the enveloping sadness and sudden mood swings were a sign of aging until reading an article from a Canadian medical research team that indicated that those same symptoms were often side effects of Singulair.	F	64	1 years		3/31/2008 Email
1	Allergic rhinitis	Shortly after starting this drug, I developed a rash on my arms and legs. My eyelids became puffy and felt as if a rash had developed on the inside. I attributed the problems to my working in the yard, so I focused on taking the Singulair more regularly, as my NP had advised when she gave me samples. I also began to feel mildly nauseated. My problems got really bad on Mother's Day and the next day when I had to leave work because of the nausea. I finally realized that taking Singulair was the only real medication change I had made in the past month, so I called my allergist to ask if the rash and nausea could be side effects. They said yes, told me to stop taking it, and to take an antihistamine. I still feel miserable.		F	64	30 days		5/14/2009
5	Asthma	none	You have to make sure you follow directions and take every night.	F	63	15 months		12/8/2002
4	excercise induced asthma	extreme fatigue,unexplained depression, mood swings		M	63	6 months		7/3/2006
1	sinus infection	I take very few medications, but my doctor suggested I try taking singular for a few days (before putting me on antibiotics) to help relieve my sinus infection and runny nose. It did help with my breathing. However after taking this medication for just 2 days by the second day I was experiencing joint pain and anxiety. I then decided to go on line to find out with others have experienced and now I know I was not just imagining these side effects. No more singular for me.		F	63	2 days		10/21/2007
2	Asthma	Severe pain in left arm and hand, followed by numbness.	I was admitted to the hospital two weeks ago with severe asthma. Singulair was among the medications I was given. After a week, I experienced acute pain in my lower arm and hand, followed by numbness. I discontinued my Albuterol nebulizer treatments, but the pain and numbness continued. This left me taking Advair and Singulair. I didn't take either today and there has been no pain, just mild numbness. I'm scheduled for a test on Monday, but couldn't take the pain until then. I'm not sure if the Singulair helped the asthma all that much as I was on so many medications while in the hospital.	F	61	14 days		10/21/2006 Email
1	seasonal allergies "Beware"	After taking just one pill in the evening I awoke to numbness in my right side and a feeling of pins and needles.After 4 days I still have numbness in the palm of my hand the fatty part of my upper arm , stomach and thigh all on the right side.Fatty tissue area.Anyone else had this problem? Dr. told me to take 25 mg of Benadril every 4 hours for a day......I hope that this helps !!!!!!!!!		F	61	1 days		11/23/2005 Email
1	inflamed airway	Anger,racing thoughts of paranoia, began to feel as I did when first diagnosed with depression which had been under control, but the Singulair seemed to be overriding the Wellbutrin. I also withdrew from my husband and did not "want to be bothered." All side effects went away with 36 hours of stopping Singulair.		F	61	4 days		6/2/2008
3	asthma	worked great for asthma, but then I began having leg cramps, at first mild, then severe, had to stop taking singulair	Has anyone else experienced severe muscle cramps while on this medication? I am just wondering if others are having leg cramps.	F	60	4 months 10 mg 1X D		5/13/2010
2	respiratory allergy	This week started seeing, hearing things. Little things. A glance at a thing and I see it wrong, clearly but wrong. A name written down, the time, the sentence someone said I heard completely wrong. She spoke, I heard her voice but the words were not what she said. It was clear too. Am also tired, distracted, just wonkie.	Not that good for allergy but can breathe through my nose. Still feels congested, ears still congested. Eyes and ears itch still. Still had to use inhaler during a cold. No sinus infections, though. A blessing but not enough to be on another planet. I am quitting singulair. Going to get allergy shots and use the steroid spray.	F	60	60 days		9/24/2005
1	Asthma	Depression, mood swings, anxiety over things that I wouldn't normally be anxious about.	I considered my self a very well rounded person until I started having severe depression upon waking each day. I have Lupus and take many drugs so I had no reason to blame the Singulair. I actually thought my "sadness" was due to low blood sugar and have been trying uselessly for 2 years to balance protein with depression. I finally did some thinking and realized that the Singulair was started at the same time my depression started. I found your site and can't thank you enough. Just awful to think you are the only one out there having problems. Have stopped the Singulair and symptoms already better.	M	60	2 years		1/24/2008
1	Asthma	Depression,anxiety,mood changes,fatigue	I took singular for 10 years and suffered major depression, anxiety. All these years I though it was from menepause or or just a family illness. I have been off Singulair since 3-28-08 and I feel like a new woman, the weight has been lifted off my shoulders. I can see the light. It is awful to think I have suffered for 10 years.	F	60	10 days		4/19/2008
1	Asthma	rapid heartbeat, aniexty, great feelings of depression, just wanted to stop my day and sleep. Hard to concentrate, and get motivated. Feeling flush faced, with rapid breathing, dry mouth. Lots of constipation. Feeling of wanting to hurt someone by saying something mean spirited that could not be taken back. Would not take again if someone paid me. I started by taking in the morning with my other meds and had no affects, when I switched to evenings , the side affects started. Can hardly wait for my system to flush the medicine out of my system. Have called my doctor to complain . Would not recommend to anyone who may have previous episodes of depression.		F	60	30 days		5/30/2007
1	Chronic Cough	Hair Loss, Rapid Weight Gain, High Cholesterol, Muscle Tension, Rashes.	I came to this site to find out if my son's recent health issues were due to the RX he's taking. It appears they are indeed the culprit. Our 20 yr old son developed a chronic cough in April 2007. Many meds were tried to relieve the cough. Todate, no meds have given him relief. For the past 18 months he has been on Singulair. For the past 12 months he's also been on Astelin and Nasacort. In the past year his total cholesterol reached 257 (up from the previous 180's), he's gained over 30 lbs (despite dieting), has had significant hair loss, neck/jaw tension, headaches and some hives. The mfg drug side effects sheet didn't list any of these items; however, after reading previous comments I feel the meds he's currently on (particularly Singulair and Astelin may be the culprits. We plan on having our son stop these meds immediately and revisit his allergist for a consult. We are now considering acupunture and a holistic medicine to his chronic cough. The medical profession has failed him terribly.	F	60	18 months		11/14/2009 Email
5	Allergies, exertional asthma	None	Wow, this drug has been like a miracle for me. My breathing and stamina have greatly improved in the year I've been taking it. No side effects whatsoever.	F	59	1 years		4/19/2009
5	asthma			F	59	1 years		10/9/2004
1	allergies	constant headache,severe shoulder joint pain, extreme fatigue, total body ache, chilled, night sweats, blood tests elavated, nausea, very very difficult to focus.	My job was my life, was! Don't take in morning, as I was told to do several months ago by my doctor.	M	59	3 years		11/8/2006
5	asthma	none	wonderful medication,only have to use my inhaler occasionally. I can finally breath with no chest tightness. I can run up and down the stairs with no wheezing and shortness of breath..	F	58	66 days		10/22/2005
5	COPD	none	Since taking Singulair have been able to get through the cold weather without resorting to steroids for my breathing problems for the first time in ten years. My respiratory capacity has also improved.	F	58	3 years		6/6/2007 Email
5	migraines	slight ringing in ears, a little drowsy	great medication, a wonder drug for my migraines	M	58	3 months		5/26/2007
3	Asthmatic/cough/severe/ruptured mus	After 1 month, began experiencing FREQUENT severe cramps in ribs-back-thighs-groins-chest-calves.After 2 months, total sexual anesthesia.This month I have started talking about dying A LOT.	For 6 months I coughed so hard I ruptured muscles in my chest, threw my back out 3 times and became incontinent of bladder. Singulair, Advair and Combivent all prescribed at the same time. Breathing is wonderful but I have read where some of the side effects mimic the illnesses. Combivent makes me cough terribly and produce mucus. I can't move at all without triggering a cramp and am terrified of one hitting my heart- after all, it is a muscle. 3 coworkers started to ask me if I had any plans to suicide (at 3 different times and occasions) Planned to switch the Combivent for Albuterol but had a terrible cramp while answering this survey- no more Singulaire for me.	F	58	90 days		8/13/2008
3	allergy and asthma	Cramping in calves and feet. My toes would curl up in a terrible cramp and it would take me awhile to get it to release. Also I would get cramps in my legs.	It helped but the side effect for me is too painful.	F	58	25 days		5/30/2009
2	Asthma	Severe depression, very vivid dreams, skin problems with excema and severe itiching of face, scalp and neck, hair falling out. Scalp was numb and tingling.	Helped with asthma symptoms, but due to side effects could not take.	F	58	6 months		2/6/2009
1	allergic asthma	insomnia, hand tremors, tinnitus (pulsating in left ear), pain in front of right thigh, thoughts about death	Singulair did control my asthma symptoms. I took it for 6 1/2 years. I stopped it when I read that Singulair had a black box, that it may cause suicidal thoughts in children. I asked myself what it is doing to me. I had no idea. It has been a year since I stopped Singulair. The pain in the front of my thigh went away in 3 days; the tinnitus, which I had noticed for about 6 months, lessened in 6 months and then was gone; the insomnia improved immediately--I slept so well. The hand tremors I'd had since Sept, 2005, are much less, and I only notice somettimes when I am tired. I noticed those when I would lift a fork to eat. I didn't realize I had the thoughts about death and that it wouldn't be so bad, until I stopped the Singulair and the thoughts went away. I would never take this drug again. I would never recommend it to anyone. Why does it have this effect on the brain? I tried a Flovent inhaler, but I was allergic to the propellant, according to my allergist. He placed me on Asmanex twisthaler, which is a powder, with no propellant. It has been a year and it has worked. No espisodes requiring prednisone. What a relief. And, no side effects, of which I am aware.	F	58	6 years		4/28/2009 Email
1	ADULT ASTHMA	Beware- I am basically a level headed person- I gradually drifted into a deep depression and crying spells after 2 weeks. Takes several days to realize it is this drug that is this causing this. Takes another several days to detox it from your system.	This is the second time I have taken Singulair and experienced the same thing. It helps so much with my lungs that I had forgotten that I had the same side effects 2 yrs. ago. The experience is so scary I feel this drug should be taken off the market. If not for this web site I would probably think I was losing my mind.	F	58	19 days		11/19/2009
1	Asthma; persistent, intense cough	Significant increase in shortness of breath and fatigue. Prior to Singulair, I was able to walk on treadmill and do some light activity, but after only 2 days of taking 10 mg/day, I felt ill and unable to engage in normal conversation, so I stopped medication. It took a few months just to get back to baseline.	Allergist's recommendation was to continue taking Singulair and to begin using a combination inhaler. I decided against that advice as I am afraid of inhalers; also I believed that following his advice would take me down the wrong path (more meds, and thereby more side effects & interactions). I've been waiting for appt w/new allergist who uses sublingual allergy meds--supposedly less problematic. My chronic cough has caused organs to prolapse, so I hope the sublingual med helps before I need operations to correct prolapses.	F	58	2 days		12/4/2009
5	allergies	No side effects	Has greatly helped me control my allergies.	F	57	6 years		5/20/2008
5	due to my astma attach	none whatsoever	excellent as far as i am concern and astma is controlled	F	57	10 years		9/26/2008 Email
2	Chronic rhinitis	Increased appetite (I was eating everything in sight and even dreaming about food), panic attacks, lethargy, feeling like I was about to black out, and worst of all, the most severe migraine I've ever had.	It seemed to help the chronic runny nose a little, but not enough to put up with the awful side effects. I stopped taking it after the severe headache began, and haven't tried it since.	F	57	6 days		11/19/2005
2	Allergies to pets/dust etc	Mood swings, depression, lack of focus, respiratory distress symptoms when I stopped taking this drug.	I've had allergies to cats, dust and molds all my life. I have been generally healthy except for exposure to these allergens. Singulair really helped prevent asthma symptoms but I noticed when I stopped taking it I had respiratory distress symptoms even though no having no exposure to allergens. After about two weeks the feeling of "I need to go back on singulair" would go away as well as the respiratory distress symptoms. It was like I was addicted to this drug and needed to keep taking it to stay healthy. Since I've reacted to specific allergens my whole life when only when exposed it didn't make sense to me to be feeling this way each time I stopped taking singulair. I'm done with this drug!	M	57	1 years		5/5/2009
5	allergic rhinitis	I take it at night but it still makes me sleepy during the day. However, I'd rather be sleepy than having miserable allergies! I also experience	I am so glad to have discovered this stuff! I gather it either helps you or it doesn't, and am so glad it helps me! I also take a mind-numbing number of other allergy meds -- allegra, sudafed, flonase, atrovent nasal spray, astelin nasal spray -- but this made the most difference! I still take the other stuff, but this gave me the best spring I've had in YEARS! Oh yes, I take shots too! My allergies are to all inhalants, indoors & out. :-(	F	56	44 days		6/6/2005
4	allergies and asthma	Recently went through Anaphylatic shock and almost died so have gone through the allergy testing and found myself allegeric to trees, grasses, weeds, mold, farm pollens, dust and dust mites and cats. Allergist started me on Singulair on Oct. 30. It is now Nov. 17th. Take Zyrtec also, and had Nasonex to use. Discontinued the Nasonex when I read another website devoted to the side effects it can cause with some that never go away. I suffered two or three bouts of severe sinus infection a year after a cold and every cold went down into my chest. The constant drainage (how does the human body produce so much snot?)and sinus pressure is gone. Feel like new person but as of Nov. 12th, have abdominal pain and diarrhea. VERY unlike me. Never know when a bout of cramping will result in a rush to find a bathroom. My intestines are rolling and boiling. Seems like anything I eat goes to liquid right away. Since I am past the worst of my allergy season, will stop taking Singulair and watch	As with anything, be aware and extremely cautious. We know our bodies best and we know our children so when we see behaviors changing for the worst, look at the outside source, aka new meds.	M	56	19 days		11/17/2007
3	Allergies & Asthma	None that I'm aware of. Not sure how effective this medication really is, I still have a constantly runny nose all year long.		F	56	5 years		2/21/2009
2	Allergies, stuffy nose and ears	Extremely dry eyes; vaginal dryness and sexual pain; loss of sexual desire; insomnia; numbness in hands upon waking; weight gain; mood swings; irritable; intolerance to heat.	Normally, I am a happy, energetic lady...but, I have suffered with all of things I have listed for a couple of years now. I have blamed my problems on age, carpal tunnel, hormones, etc. I thought I had really gotten the nerve since menopause. It never occured to me that Singulair could be the culprit, until I heard a mother talking about her child taking Singulair on the morning t.v. show. So, I pulled up this site...I was amazed at how many people have written in with similar symptoms!!! I quit taking Singulair last week. So far, my temperment seems much better (I don't seem to be cursing under my breath as bad), my ears and nose are still extremely clear. I will try not taking Advil p.m. soon (I need my sleep). I will write back in a few weeks with my update. Thanks to everyone for sharing.	F	56	2 years		3/4/2008
1	Allergy	Severe depression, severe insomnia after only one pill.	I'm afraid to take it again.	M	56	1 days		2/26/2009 Email
1	asthma	muscle cramps and soreness; cold, tingling feet and hands; elevated fasting blood sugar; anxiety and mood swings	I wanted my side effects not to be caused be Singulair because it really helped my asthma a great deal. However, after reading the reports I decided to experiment and not take it for two weeks, and was amazed to find that my extreme anxiety and mood swings (crying jags, etc.) disappeared within a week! I had thought it was menopause symptoms all this time. Also gone are nightly painful muscle cramps, my feet and hands are warm again, and my fasting blood sugar fell by 25 points. Great for asthma, but bad for me. I will not take Singulair again.	F	56	4 years		6/23/2008
5	Chemical intolerance to fragrances	I did not realize I had side effects, but looking back after reading patient comments I realize that the insomnia and irritability, greatly reduced tolerance for stress, etc., may well have been side effects of Singulair. When I suddenly stopped taking Singulair the first time after about 8 months (because I left the environment that was causing my original symptoms), after a few days I developed truly crippling lower back pain, like a muscle spasm at the top of my hip bone. Was flat on my back in agony for a week. I recently started taking Singulair again, took it for 3-1/2 weeks. Then, after leaving the environment that caused the allergic reactions, stopped again. Now, a few days later, the muscle pain is returning with a vengeance. This time, I put 2 + 2 together and am fairly certain that this is due to sudden cessation of the medication, as I have never had back problems before in my life (55/f). Also, after reading all the comments on this and another site, am wondering i		F	55			6/17/2007
4				M	55	2 years		7/5/2007
3	Asthma, SOB	Horrendous depression and crying. Really bummed about this because it's helped my asthma and shortness of breath a LOT. But I don't know how I can tolerate the depression much longer. Does it eventually go away??	I don't like the fact that the chewable tablets contain aspartame, a sweetner that many European countries have banned due to its own bad side-effects - tumor excelleration and short-term memory loss among them.	F	55	4 days		10/22/2006
3	Asthma & Allergies	very tired , lack of interest in things that usually please me, mood swings , depression , indecisive	unfortunately it helped with my allergies--it also gave me back my sense of smell that had been gone for years but it's not worth the side affects---------I'm stopping today and will report back after a week or 2 with an update-I hope to back to my old self---keeping my sense of smell would be a bonus!	M	55	2.5 years		9/30/2008
2	allergies	none that I noticed for sure. Mouth sore problem resurfaced, but not sure if its related to Singulair. I mention it just in case. Possible weight gain. Worked in the garden non-stop all weeekend. Usually I drop 5 lbs when I do that, but didn't past weekend. gained 1 lb.	Pollen isn't too bad this time of year, but I guess I'm allergic to mold spores. The past 2 days have been rainy and drizzly and humid. I have been sneezing non-stop. I'm going back to Allegra.	F	55	10 days		8/29/2006
2	mild asthma	extreme anxiety, sadness, wake up in middle of night, crying without reason, belligerent, aggressive, mood swings	This medicine worked well for me in the past. I would take it only in the Fall, when my asthma usually bothers me. I liked Singulair because it nearly eliminated my need for an inhaler. However, this year I began feeling side effects after about one week. They were severe enough for me to seek an appointment with a mental health professional. My wife thought I should research the drugs and herbs I am taking, then I found this website. No more Singulair for me!	M	55	3 years		11/7/2006
2	To prevent nasal polyp regrowth	Was prescribed Singulair following sinus surgery as a precaution to prevent polyp regrowth (this is the third surgery). Began taking on 2/02/07 and have become profoundly tired, wake up, eat breakfast and want to go back to bed. No motivation for anything, have never been "depressed" but the symptoms are as such. Go to bed at 6 pm and sleep till 7 am and still am exhausted. Have no appetite and frequently think about death. Will continue the two month program set by my surgeon but will never use this drug again.		M	55	15 days		2/17/2007 Email
1	allergies, ear infs, congestion	Drug was very effective with no side effects until about 3rd - 4th month when I realized I had become depressed, anxious, irritable, easily agitated, and easily angered with no to little motivation which was very atypical for me. Could not find a reason for it.	Kept forgetting to pick up my refill so I rationed the remaining pills, taking one every couple days for a week and then went without for approx 5 days. By the 5th day having no singulair, I suddenly realized that I was back to normal with no depression, anxiety, etc. Will never take this drug again and hate to think what condition I could have been in had I continued on it any longer. So glad I found this out purely by accident. Am amazed at the very negative side effects and never suspected Singulair as the cause.	F	55	5 months 10 mg 1X D		4/23/2010 Email
5	Sinuses completely plugged	I have had increased ringing in my ears. Upon reading these reviews I realize that my sleep patterns could be altered by this med. I'm 54 years old (male) but until 1 1/2 years ago I could count on one hand how many days per year that I could breathe thru my nose. Now its completely open and I can actually smell things. I take mine in the morning & I think that my sleep symptoms are rather minimal because of that. It says on the bottle to take at nite but my mom always said not to take any maintenance med when you go to sleep. So I didnt. I feel that it is a wonderdrug and really like it.	My ins covers it but for copay so it is a doable thing for me. I have NEVER taken any type of maintenance med!! I see on the receipt though that it would cost me about $4 per dose if I pay out of pocket. Dont know if its worth that! Perhaps if I go off it and the concrete sets in again I will think differently. Pretty Pricey!!!	M	54	18 months		2/6/2008
5	Chonic asthma	Terrible nightmares, leg cramps, muscle aches, flu like symtoms.	Singulair is wonderful except for the side effects. I took it for three years and had to stop because of bad dreams. I started taking again and got leg cramps, muscle aches and flu like symptons. I stopped for a few weeks, symptons were gone. Started taking it again, symptons returned. Now that I read comments about Singulair I see other related symptons such as low back pain, concentration problems, forgetfulness. I have been off for two weeks now. I'll see if other symtons get better too.	F	54	3 years		6/22/2008
4	daily migraines	I've experienced no side effects that I know of although after looking at this site, I believe the med caused a few nights of unexplained sleeplessness.	I'd heard that Singulair can help with migraines so, at my urging, my neurologist prescribed this med for me. It definitely has helped although I'm far from perfect. I'm taking this med vs. other daily preventatives because of dryness the others can cause (I have an autoimmune disease that causes dryness). My heart goes out to the parents here whose children have had negative side effects--esp the parent whose child took his life. Very useful website!	F	54	25 days		1/13/2008 Email
3	allergies and asthma	None except I can't fall asleep when I take this stuff.	Does an amazing job quelling allergic symptoms and asthma, especially for my cat allergy. But it does rev me up at night so I only take if dire need.	F	54	3 years		5/31/2008
2	asthma/allergies	I was 'sort of' fine the first 2 weeks, but the 3rd week brought on symptoms from hell. Sleeping problems (nightmares and feeling like I had electicity running through my viens)Extreme drowsiness & sleepiness in the day, mental fogginess, bone and body aches so bad I could not lay on my mattress at night. And I was unable to stay awake in the day - felt like I was drugged. Add to that water retention and face puffiness.	Scary stuff this drug! Sadly, if it werent for the horrid side effects it would be great. My sneezing and nose dripping stopped, and my asthma symptoms improved! However, thanks but no thanks! They need to do some work with this drug. And why is everyone telling me (doctor and pharmacists) that this drug is well tolerated - when I read everyones comments it doesnt appear so at all.	M	54	17 days		7/12/2007
3	asthma	Increased anxiety; depression; heart palpitations; nightmares;stomach aches		F	53	6 months		4/7/2009
2		Nightmares, insomnia, immediate worsening of my restless-leg syndrome, pounding heartbeat.		M	53	8 days		10/28/2009
2	asthma allergies	increasing numbness in hands and feet, fasting blood sugar increase of 23 points into the pre-diabetic range [no family history], blood pressure increase, anxiety , slurred speech, headache, preoccupation with health and death, sadness	Initially thrilled to be able to breathe through my nose, totally allergy free in high season, ebullient with relief from allergy/asthma symptoms, proclaimed Singulair as the med that changed my life. Now know that the change has been for the worse [except respiratorily], and am stopping it tonight.	F	53	3 days		8/10/2007
2	Asthma	Severe headaches lasting two or more days.	Singulair definitely cleared up my asthma symptoms. I did not need an inhaler during the time I was taking it. However, the severe headaches forced me to discontinue taking it and I am now back on Ventolin on a daily basis.	M	53	6 months		5/15/2005 Email
1	pediatric asthma	My eight year old daughter - previously a happy, well adjusted girl - became depressed, attempted self mutilation and entertained thoughts of suicide.	After taking Singulair myself, I understand what my daughter went through. I wake up every morning with very dark thoughts. It is not depression, just misery. What my daughter went through is shocking. DO NOT ALLOW YOUR CHILDREN TO TAKE SINGULAIR OR ADVAIR. It is not worth the price...	F	53	8 months		10/6/2006
1	seasonal allergies	Severe drowsiness, almost falling asleep while driving. Mood shifts, anomie, lack of enthusiasm about life, laziness. It was very hard to attribute this to the drug because it takes a while to start, but it alleviates quickly when drug is stopped. No noticeable relief of allergies: possibly got a bit worse.	Stopped taking it a week before the news reports started. I do not think this drug should be widely prescribed. I would never give it to a child too young to express themselves clearly, would monitor carefully for behavior changes over a time frame of weeks, and would avoid starting at the same time as other drugs. None for me thanks.	M	53	1 years		3/29/2008
1	Allergy problems, sinus	I am a glass half full type of person. Within 36 hours of taking this medication I was having very depressing thoughts, by the end of the second day I felt like I was having an out of body, numbness everywhere... terrible side effects. Found this link, read other comments. Stopped about 72 hours ago and returning to normal quickly.	It did clear nasal passages but need another solution, the side effects are just too great.	M	53	4 days		11/11/2009
4	Asthma	Outstanding product for me - rarely use rescue inhaler after living on one for 20 years! - maybe very slight depression but not sure if related to Singulair - maybe moody - just me I think!		M	52	4 years		4/20/2005
3	chronic sinusitis/allergies	fatigue, lethargy, muscle weakness	I have been taking it for a week at bedtime. It does reduce allergy symptoms but does not work well enough to make up for the drawbacks. Although I yawn quite a bit through the morning, I generally do okay until mid-afternoon, when the real fatigue hits and I have trouble dragging through the rest of the day. This is upsetting because I've always been an active person. I am going to stop taking it as of today because of this.	F	52	8 days		7/7/2006
2	severe rhinitis, post nasal drip	RAPID WEIGHT GAIN, bloated feeling, lethargy, loss of mental clarity, mild or occasionally moderate depression and anxiety.	Singulair was prescribed, along with Nassonex (mometasone) to treat severe chronic rhinitis, as an alternative to continual use of pseudephedrine. Things went OK for the first three months, after which I experienced an increase in lethargy, moodiness/mild depression, loss of concentration, moderate anxiety, muscular weakness, and weight gain. I did not notice much relief for the rhinitis (an issue because I cannot mouth-breathe, and end up hypoxic) - in fact, I had to go back to decongestant nasal sprays, most especially at night, and gained more relief from regular twice-daily use of a NeilMed nasal rinse than from SIngulair. More recently, I've had a constant feeling of being bloated, especially in the hands and feet, and mental "fuzziness" similar to that which many people experience with antihistamines. All of these have been increasing. The weight gain was 12 pounds in 4 months. -- Other medications (used for a very long time with excellent result and no side effe	M	52	8 months		11/3/2007
1	allergies	Upper respiratory infection; abdominal pain	Worked well for allergies, but side effects were not worth benefits.	F	52	14 days		9/5/2005
1	For Asthma	I am an Australian woman in my early 50's. I was prescribed Singulair by my doctor about 2 years ago. I have suffered from severe depression, nausea, muscle aches and pains, aggression and the list goes on...... I have asked my doctor about these problems over the last 2 years and she says "I'm menopausal". I have just read an article in a magazine about the shocking side effects of Singulair and this product should be taken off the market immediately.	Because of the dangerous side effects of this drug, no doctor should be prescribing this medication to children. I have stopped taking Singulair about 3 weeks now and I feel like my old self again. My asthma is bad and I'm allergic to all puffers but I'm not depressed anymore and that's a blessing.	F	52	2 years		6/23/2008
5	asthma	none, zero, zip	It's a wonderdrug for my mild asthma. I have some allergies and also cold weather/exercise induced asthma. I used to have to use my inhaler after walking or shoveling snow in the winter, and before exercising every day year round inside. Since beginning this drug I have had to use an inhaler maybe 3 times when I have had a respiratory bug....that's 3 times over the last 12 years; as opposed to daily use of the inhaler prior to beginning this drug. Zero complaints!!!	F	51	12 years		10/27/2007
5	allergies	None	This is like a miracle drug for me! I lived constantly with symptoms of chronic allergies: runny, stuffy nose; sinus headaches; chronic cough, etc. I've been taking Singulair for just about a year and have been 100% allergy-symptom free for all of that time. A+++++	F	51	1 years		11/22/2006
5	allergic rhinitis	none	I've come to the conclusion that I must have had a mild form of asthma along with allergic rhinitis because within a day of taking Singulair my breathing, consequently my running, was significantly better. I took deeper breaths and had more endurance than ever before. It's amazing how one can exercise when you can breathe :)	F	51	2 months		7/7/2006
2	allergies, sinus problems	YIKES!!! I took it a few years ago and quit because of the insomnia and general agitation it caused me. Tried it again recently and this time I've got the previous side effects PLUS muscle spasms in back, ribs (intercostal muscles between ribs), and jaw. Scary. I thought I was getting TMJ, only to find the problem goes away if I stop taking Singulair. My back and ribs hurt so much I thought something was wrong with my lungs.	This is too bad, all the muscle spasms, insomnia, and crabbiness, because the drug WORKS as far as helping me breathe better. Less wheezing, less stuffiness, but it's just not worth it. Looks like I'm back to Benadryl and grogginess. I'll accept that before I agree to anymore muscle spasms. ugh.	F	51	3 days		5/11/2007
1	asthma	Insomnia, muscle aches, daily morning headache, feeling like ants under my skin, irritability (extreme), fatigue not relieved by full night's rest, "brain fog", inability to concentrate on difficult tasks, swelling of ankles, rash on back and legs, dry eyes, dry mouth, extremely dry lips, always thirsty, tinnitus.	I was on this med for five years, prescribed by pulmonary doc for asthma. I had been feeling increasingly tired, achy, irritable and fed up with life in general. I could not seem to concentrate at work and would make errors that I never made before. The swelling and itching and dryness was getting worse. I went to my GP and she told me I was going through menopause and was "depressed" and that I needed anti-anxiety meds. I refused to take the RX, and came home and started researching Singulair as I began to realize that the not feeling well had started the same year I was "diagnosed" with asthma. When I found this website, I knew I had to get off this drug. I have been off it for three weeks now, and I cannot believe how much better I feel already. I am praying that most of my symptoms will abate if I continue to clear my system of this drug. When my allergy symptoms get worse, I take Benadryl, makes me a little sleepy, but at least I don't have the "brain f	F	51	5 years		5/18/2007 Email
1	constant allergies	Extreme rage, inability to focus, profoundly upsetting nightmares/dreams	Took this once. Just once. I have been on allergy meds for years and never experienced this kind of reaction, or any reaction really. My adult brother was very scared for/of me, and we just talked on the phone. Lucky for me I took it on a day off or who knows what would have happened. This took a couple of days to get out of my system. Will never take it again.	F	51	1 days		4/9/2009
1	Allergies/Asthma	Feelings of anger, depression,distance, exhausted, lack of focus and concentration.	On/Off 2 yrs. Only take when asthma really bad-(it is a "tempting drug" works wonders for asthma. Side effects horrendous. Took because Pro-Air which is all I can get now - does not seem to work real well replaced Albuterol because of the harm to the ozone layer - RIGHT. I am Coming off 5 mg. 1/2 pill 48 hrs. now sneezing again, but can't sleep but exhausted. Like crashing from an illegal drug. Take your little ones off this drug immed. if you see any symptoms in their personality. They may not be able to communicate what they are feeling. Merk should be sued. SINGULAIR IS A DANGEROUS DRUG. and expensive too.	F	51	2 years		1/6/2009 Email
5	Asthma / Bronchitus	None I am aware of	Got me off regular inhaled steroids and ventolin, of course it's price set to the same point at the drugs it replaced.	M	50	1.5 years		2/13/2005
5	asthma	It was great for my asthma but I developed terrible migraines that made me nonfunctional.		F	50	3 months		4/21/2005
5	Formerly unmanaged asthma	So far, none. That is HIGHLY unusual for me!	I have spent the better part of my adult life being tired and having asthma symptoms (long undiagnosed). My asthma was not diagnosed until I was in my 30's, and no doctor ever really managed it correctly, or at all. I kept on believing that my breathing wasn't too bad. After becoming progressively tired over the past year+, I told my primary care doctor that we needed to find out what was wrong with me, that I couldn't go on feeling the way that I was feeling. A full cardiac work-up revealed a perfectly functioning heart. The pulmonologist's report wasn't as rosy. He believes that my years of untreated asthma have caused some permanent damage, and that there may also be COPD involved. He put me on Advair and Singulair. I decided on taking 5 mg. of Singulair rather than the prescribed 10 mg, since I'm less than 5' tall, and under 100 lbs. I'm frequently given doses of medication that are too high. Well, I can't say for sure which drug is doing what, but I do know that I have not	F	50	10 days		12/7/2006
5	Asthma allergies	none for me none for my daughter 11years	before singulair my daughter had to use the nebulizer most winters, and had regular bouts of Bronchitis. I had serious sinus allergies. We've both been very well since taking the medication	F	50	10 years 5 mg 1X D		4/13/2010
3	Chronic rhinitis and nasal polyps	Anxiety, depression, mood changes, irritability, drowsiness, sleep disturbances, vivid and strange dreams	This drug works better than any other nonsteroidal drug for my nasal symptoms, and it helps to diminish stuffiness and restore my sense of smell. However, the side effects are profound, and Singulair makes me feel hyper-sensitive, emotional, anxious, depressed, and gives me vivid and strange dreams bordering on nightmares. I am glad to had found this website, because now I know that others experience the same side effects. It is too bad, since the drug works well for sinus problems; I just don't know if it is worth it, with all of the severe side effects it causes.	F	50	14 days		9/27/2007
2	Allergies, astma	Headaches, Numbing of the fingers and arms. Heart rate up, with palpatations. Anxiety, general weirdness feeling.	WARNING!!!! FOR THOSE WHO THINK THIS WORKS GREAT! This drug almost cured me from being sick with respitory problems my whole life that were literally life threatening. HOWEVER- long term I started getting numbing, tingling in my hands and it has always made me anxious. I am an adult. I finally figured out the cure wasnt this, it was all the food allergies i had!!! Check your blood for food allergies! A lot of the wheat soy and the rest is being manipulated and is GMO. Our bodies react to this. I got off this drug almost completely and the numbing has subsided.	F	50	7 years		4/12/2008
2	Asthma	Emotional outbursts, flooding of thoughts, joint pain, racing heart, spaced out, insecurity and negative self talk, suicidal thoughts, hopelessness.	Singulair did a great job on the asthma it was the other crazy side effects that took me over the edge. Used to be on 10 MG and am down to 2.5 and hope to be off of it soon. I spent thousands of dollars on therapy, counter balanced these side effects by taking more drugs: Adderall (ADD Drug) for the spaced out and inability to focus, VIOXX for the joint pain, bursitis and aches (until it was taken of the market), COUNTLESS natural remedies running me thousands of dollars. Currently I am detoxing and drinking Kangen Water. The Kangen water has been most beneficial for my breathing and detoxing whatever was giving me the asthma in the first place.	F	50	11 years 2.5 MG 1X D		6/8/2010 Email
2	Asthma - Sinusitis - Allergies	Nightmares, anger, anxiety, agitation, heart racing and jumping and odd feeling.	This is the third time I've tried to take it; yes, there's *some* benefit for asthma, none for chornic sinusitis or allergies. But, I still need Advair every day and Albuterol. Doesn't do as much for asthma as it once did and it ALWAYS had distressing mental and heart side effects. My doc said those are not in the book but admitted other patients come in and say the same thing. I'm going off.	F	50	12 months		1/13/2007 Email
1	Allergies	I have been unusually depressed - suicide thoughts - lack of mental acuity. Also, primary reason I took this was to get rid of a cough but I cough every time I breath cool air from air conditioning. Also experiencing breathlessness at times.	I went online to see if my depression could be associated with any drugs I am taking. I also take blood pressure medicine (losartan) but have not had any problems with that in the past year.	M	50	2 months 1X D		6/24/2010
1	asthma/allergies	constipation and abdominal pain	After maybe a week or so taking it, I became suddenly and severly constipated, and was doubled over with abdominal pain, then vomited. Two days later the abdominal pain came back just as bad, but without the vomiting. It came in waves, plus still severe constipation. It was so bad I ended up in the ER. I had no idea why I was so constipated and in such pain. It didn't occur to me for a few days that it could be related to Singulair. When it did, I stopped taking it to see if there was a link, and sure enough, I returned to normal. Has anyone else had these symptoms?	F	50	7 days		12/28/2005 Email
1	Asthma	Moodiness, hostility, depression	Discontinued use today, would rather live with asthma symptoms.	M	50	2 years 10mg 1X D		5/26/2010
1	1st for Asthma, then for allergies	Depression, moodiness, loss of libido, loss of interest in hobbies, life etc.	After hearing that Singulair was linked to people committing suicide, I decided to stop taking it. Without doctor supervision (I would not suggest doing that), I went off it cold turkey after being on it for 7 to 8 years (I 'quit' around the end of March). I used to feel 'frozen' inside -- not temperature-wise, but emotionally. It was scary to get all this feeling back in just a few days. I've been happy for the first time in many, many years. Unaccountably happy. I had thought the emotional problems were related to circumstances and aging, which might have had a contribution. But I am on other medication that seem to be controlling the asthma and allergies and see no reason to go back taking Singulair. The change for the better in my emotional state has been dramatic and I want to stay this way.	F	50	7 years		5/22/2008
1	Asthma, sinusitis	Irritability, agitation, brain fog, fatigue	Dangerously elevates my blood pressure	F	50	90 days		3/30/2005

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Average rating for drug: 2.2. This page is printer-friendly; use landscape print with background color turned on.

Key to ratings: 5-Very Satisfied: this medicine cured me or helped me a great deal. 4-Satisfied: this medicine helped. 3-Somewhat Satisfied: this medicine helped somewhat. 2-Not Satisfied: this medicine did not work to my satisfaction. 1-Dissatisfied: I would not recommend taking this medicine.

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