SINGULAIR Reviews (MONTELUKAST SODIUM)

Average Rating: 2.1 (1370 Ratings)

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 ANTIASTHMATICS BRONCODILATORS

 Type: Rx Drug

  

SINGULAIR  (MONTELUKAST SODIUM):  Montelukast is used regularly to prevent the wheezing and shortness of breath caused by asthma and decrease the number of asthma attacks. Montelukast is also used before exercise to prevent breathing problems during exercise (bronchospasm). This medication can help decrease the number of times you need to use your rescue inhaler. This medication is also used to relieve symptoms of hay fever and allergic rhinitis (such as sneezing, stuffy/runny/itchy nose). This medication does not work right away and should not be used to treat sudden asthma attacks or other breathing problems. This drug works by blocking certain natural substances (leukotrienes) that may cause or worsen asthma and allergies. It helps make breathing easier by reducing swelling (inflammation) in the airways.   FDA Approval Date: 1998-02-20 (Sources: U.S. Centers for Medicare Services, FDA)

  

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Key to Ratings: 1=LOW (I would not recommend taking this medicine.)
5=HIGH (this medicine cured me or helped me a great deal.)

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More on SINGULAIR: Reviews Summary  |  Drug Safety Information

RATING  REASONSIDE EFFECTS FOR SINGULAIRCOMMENTSSEXAGEDURATION/
DOSAGE
DATE ADDED
 
 1  Asthma My boyfriend took Singulair for about 3 years, during the time he has experienced anxiety, brain fog, depression, eczema and some muscle aches. Being a teenager he thought most of it was due to changing hormones and such. For a while he could not afford his medication, until about ten days ago. All these syptoms have returned which has led us to believe they were side effects from Singulair. He is usually very laid back and quite happy, but would suddenly fall into states of aloofness, and would say that he could not fall asleep at 2 a.m. because he would have irrational fears that he would die. He has also been experiencing itchiness around his penis,and a significantly decreased libido, as well as some sores near his mouth. The only possible cause seems to be singulair though few have listed side effects to the genitalia or libido. After reading through askapatient.com we have come to the conclusion that he should stop taking Singulair, however his asthma is quite severe and we wish to find a new medication as soon as possible. We are currently looking at Claritin as an alternative to Singulair, but are trying to be more cautious about medication this time. The bottle which Singulair came in does not have drug ingredient information on it so we cannot compare it to Claritin. If you have any information about another medication as an alternative to Singulair, the ingredients in Singulair, experiencing similar symptoms as above from other medications, or the effects of Claritin in comparison to Singulair we would be most grateful. Thank you all so much for your posts, and we wish the best for you all. M 18 10 days
7/6/2006
 1  Allergies I took singulair for 3 weeks. After 1 week I became very depressed and had nightmares. I also became very anxious and had mood swings. I stopped taking singulair 2 days ago but am still experiencing some of these side effects. How much longer will I experience these side effects? M 18 3 weeks
7/1/2009
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 1  allergies anxiety, panic attacks, severe depression, suicidal thoughts i started taking singular for my allergies and soon after i became very depressed, after being on the drug for several months i reached a low point where i regularly cut and mutilated myself and i had suicidal thoughts. i also began to feel anxious and have panic attacks while taking singular. after i stopped taking singular my depression subsided. F 18 7 months
7/24/2009
 5  chronic sinusitis, asthma none. All my life I have had severe headaches and infections from my chronic sinusitis and I developed asthma in the 5th grade. I used to sleep all the time and I counld'nt really function in everyday life. When I started taking singulair practically all my problems vanished. The only bad thing is when I forget to take it my asthma comes back with a vengence and I can hardly get out of bed because my sinuses are in such bad shape. F 17 10 months
6/20/2008
 3  Mild Asthma and allergies My daugther was diagnosed with mild asthma at age 5. By age 6 she was started on chewable singulair and eventually moved up to the 10mg tablet. She has progressively gotten sicker with time. Not her asthma, but with these crazy symptoms. She was diagnosed with migraines at age 10. For the last three years her quality of life has declined so that she has only had one or two good days a week. She completely missed the last semester of the 11th grade and will have to repeat it. Her symptoms have been: headaches (cluster, migraine and mild), leg pain, rapid heart rate, chronic fatigue, rash like psorasis on her elbows at times, severe abdominal pain, nausea and vomitting, occasional nightmares, foggy thinking, hunger, and reflux, mood swings and abnormal periods. She was recently diagnosied with sub-clinical hypothyroidism. She has started on Sythroid and after a month has shown some improvement. I took her off the singulair about 2 weeks ago after finding this site and reading about all these side effects. I don't know if the singulair is the total culprit or not but, I took her off of the Singulair to see. It may have been what has caused the sub-clinical hypothyroidism also. She has been on it for years and progressively gotten worse. She has had mutliple GI tests that have turned up nothing but this could have been the reason all along. We have been to about 14 Doctors total with the various symptoms including her Pediatrician, Pediatric Gastrointestinal Specialist, Neurologist and Allergist. She has much improved over the last couple of weeks and is starting to act like a normal 17 year old. I had even started her in counceling 6 weeks ago because of the depression she has experienced from being sick all the time. She has not had F 17 11 years
6/13/2008
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 3  Asthma I now have acid reflux disease and I have gained alot of weight since being on it F 17 5 years
10 1X day
9/29/2011
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 1   complete craziness I had read the side effects but didnt start to realize what was happening until about the 3rd month and cotinued to take this medication but less frequently and for the past 2 months I have been having serious mood swings and coo-coo thoughts/dreams after reading the reviews I flushed those horrid pills down the toilet I would much rather use my inhaler than to go through these terrible conditions please do not allow your doctor prescribe you these things M 17 5 months
1X day
3/17/2012
 1  asthma/ allergies Increased eating and weight gain, about 25 pounds. Extreme emotional changes. Anger and agressivness. Unable to concentrate, grades in school went downhill. Increased bruising and sensitivity. Numbness. Unable to sleep, waking up constantly. Crazy and sometimes disturbing dreams. Rashes, scaly skin, and itchyness. I would not reccomend this drug. It helped me very slgihtly, but not enough to have to deal with all the changes it made to me and my life. F 17 10 months
6/13/2008
 1   Singulair Generic Name: montelukast Montelukast is a CysLT1 antagonist; it blocks the action of leukotriene D4 (and secondary ligands LTC4 and LTE4) on the cysteinyl leukotriene receptor CysLT1 in the lungs and bronchial tubes by binding to it. The cysteinyl leukotrienes LTC4, LTD4, and LTE4 are important mediators of human bronchial asthma. Leukotriene D4 is one of the leukotrienes. Its functions in the body are bronchoconstriction, vasoconstriction, contraction of smooth muscle, and increasing vascular permeability. Other leukotrienes that function in a similar manner are leukotrienes C4 and E4. Studies have suggested that LTE4 works through its own distinct receptor, and although one has not yet been discovered, research is ongoing to isolated and characterize an LTE4-specific receptor.[ Why would you allow a receptor to be Blocked when we don't even know what it is ? DON"T USE THIS DRUG Singulair Generic Name: montelukast Montelukast is a CysLT1 antagonist; it blocks the action of leukotriene D4 (and secondary ligands LTC4 and LTE4) on the cysteinyl leukotriene receptor CysLT1 in the lungs and bronchial tubes by binding to it. The cysteinyl leukotrienes LTC4, LTD4, and LTE4 are important mediators of human bronchial asthma. Leukotriene D4 is one of the leukotrienes. Its functions in the body are bronchoconstriction, vasoconstriction, contraction of smooth muscle, and increasing vascular permeability. Other leukotrienes that function in a similar manner are leukotrienes C4 and E4. Studies have suggested that LTE4 works through its own distinct receptor, and although one has not yet been discovered, research is ongoing to isolated and characterize an LTE4-specific receptor.[ Why would you allow a receptor to be Blocked when we don't even know what it is ? M 17
1X day
6/6/2014
 1  Asthma Non stop headaches, feeling faint, suicidal thoughts and a little itching Doctor though i had asthma so i was perscribed Montelkulast ( singulair) i have chronic phlegm that i have had for 2 years and i have bad panic attacks... im 17 and on the 3rd day i experience itching and a non stop headache that hasnt left since... my suicidal thoughts have included jumping out of the window or over dosing on medication.. I wont commit suicide or want to at all so i find it weird to have such dark thoughts... M 17 4 days
2 x 5mg 2X day
3/9/2014
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 3  Asthma, Allergies Depression, anxiety, a studder, hopelessness, suicidal thoughts, fear, lonliness, mood swings, anger I have taken Singulair my entire life. I wish I could have my childhood back without fear, without anxiety, without depression, I dont exactly know how this drug has helped me with my asthma, nor do I know if me as a person will be different if I ever get taken off of it. I fear I am who I am today beacuse of Singulair.a All I do is stress and fear everything, I even fear talking to people. I fear telling my doctor, if I get taken off the drug, will my asthma be controllable? Will I be a different person. Maybe I'll never know. I wonder who I would be today if I didn't have asthma, if I didnt have to take singulair. All I ever want is to be accepted by people but I fear there is no one on this earth as unfortunate as me. Every day I contemplate suicide, I fear it so much I con't do it. M 16 16 years
10mg 1X day
12/2/2011
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 1  Allergy induced asthma My 16 year old daughter took the pill and the very next day she was over the top angry, aggressive and full of rage. She was put on singular on a Wednesday and I took her back to the doctor on Monday and they immediatly took her off singular. I did not make the connection immediately but her behavior made me take a second look at the presicription side effect label from the pharmacy. F 16 5 days
30mg 1X day
5/5/2011
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 1  To prevent reaction to allergy shot SEIZURE My daughter took this once the night before going for her weekly allergy shots. I woke up to her have a seizure while taking a shower. First time ever seizure and never and no neurological history. Do not give so quickly. Read all side effects! F 16 1 days
8/27/2006
 1  Asthma/Allergy nightmares, hair loss, depression, suicidal ideology. I am posting on behalf of my daughter, age 16. She was on Singulair for approx. 6 years, switching over to the generic form August 2012. Mood changes were gradual and attributed to "teenager". Five weeks ago, the thoughts of suicide were dominant and she was removed from the drug asap - they are unsure if it is her age or the switch to the generic form that triggered this. My question is - how long before the aftereffects of this drug go away? The hair loss has just started improving but the suicidal thoughts are still present. (yes, she is under a doctor's care and seeing a therapist) F 16 6 years
5-10mgs. 1X day
2/28/2013
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 1  Asthma, environmental allergies severe depression, weight gain, irratability this drug did not work for anything, i still got respritory colds, bad allergies, and the mental effects werent worth it, even if i cured the asthma and allergies F 16 3 months
11/5/2009
 1  Allergies/Asthma My son started taking singulair when he was very young. I took him off of it for a while but his asthma flared up. He started back on it and he began to get depressed, moody, and was waking up hearing screams. He also heard someone calling his name and said he felt something touching him. He had anxiety and didnt understand what was happening to him. I spoke to his Dr. and they said to keep giving it to him. Thank goodness I didn't listen He has been off of it about one month and the side effects have decreased but aren't completely gone. I would never use this med It needs to be off the market. M 16 0 years
10mg
6/18/2017
 1  Asthma This drug caused nightmares/night terrors, hallucinations, suicidal thinking, aggression & extreme anxiety to the point my son would not leave the house. After 3 years off, he still suffers severe anxiety & sleep problems. It worked well for asthma but the neuropsychiatric side effects were horrific. Would not recommend it especially as some side effects last long after stopping. M 16 2 years
10mg
10/15/2019
 5  Asthma No side effects whatsoever. My son who is now 15 began taking 10mg of Singulair daily in combination with Zyrtec. His asthma has been completely in control but it took us years to get the right drug combination that worked for him. The drugs that contained steroids consistently resulted in significant mood and behavior changes. Fortunately we have not seen any of these types of symptoms with Singular. M 15 6 years
10MG 1X day
1/13/2011
 4  allegies hyperactiity, depression,agression, mood swings, headaches, M 15 5 years
10mg 1X day
7/6/2010
 4  asthma, allergies headache, hallucination, insomnia, irritability, anxiety/paranoid I'm 15 years old, and I've been taking Singulair since late February of this year, so about 4 months. My asthma and allergy symptoms seemed to have almost disappeared, but just recently, I've had headaches, and I've been irritable and moody according to my mom. After reading these posts, I've discovered that some weird things I've been experiencing may be linked to taking this medication. I've had weird hallucinations, in which I've been seeing and hearing things that aren't there. At first I thought it was just because I was tired and/or dreaming, but reading these other experiences, I'm starting to think otherwise. I don't think these symptoms are bad enough to quit taking it, but its starting to worry me a bit. I've told my mom about all the posts I've read on here, and that I've been experiencing many of them, but she think I'm just a hypochondriac. Any suggestions or anyone with similar symptoms? F 15 4 months
6/26/2007
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