ZYRTEC Reviews

Average Rating: 2.0 (1790 Ratings)

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 ANTIHISTAMINES

 Type: Over-the-counter Drug
  

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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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RATING  REASONSIDE EFFECTS FOR ZYRTECCOMMENTSSEXAGEDURATION/
DOSAGE
DATE ADDED
 
 1  SEASONAL ALLERGIES Heart arrhythmia, palpitations, high blood pressure, weight gain, numerous vivid dreams per night, depressed mood, difficulty stopping med/itching Unbelievable that Zyrtec is now OTC & so many people are exposed to it's side effects without sufficient warning! After I was finally able to wean myself off this drug, my blood pressure lowered to normal range and my EKG returned to normal. No more dreams or moodiness or unexplained weight gain. But I continued to feel itchy for many months. No one warns you how hard it is to STOP Zyrtec. So K-Mart shoppers BEWARE! F 60 4 years
1X D
3/25/2010
 1   My 1 year old daughter was having allergy problems so I took her to the doctor and they prescribe this to her also. I gave it to her that next morning. Within just a few hours, she started getting tired. Which i just figured it was nap time. She woke up about a hour later. Her eyes were so swollen and blood shot, coughing and sneezing worse than before, tired, weak, couldn't eat and even when she would try, she couldn't keep the food down. So i automatically figured it was the med. So, i threw it away and never gave it to her since and never will. Since then, she's been the normal, sweet little girl. I recommend this product TO NO ONE!!! F 20 1 days
1X D
3/24/2010
 3  seasonal allergies Not sure there were any until I see other parents linking it to moodiness and hyper activity. My child is now experiencing a lot of this and we only use it during certain times of the year. I believe I will switch to something else. Behavior is out of the norm. M 6
1/2 tsp 1X D
3/22/2010
 1  seasonal allergies bloated, sleepy, weak, moody, lightheaded After taking it the night before, I was relieved that my allergy dissipates a little bit but the next day, I had a hard time getting out of bed and my stomach was bloated like never before. I can't work the whole day because I felt weak and sleepy and my head feels so light. M 38 1 days
10mg 1X D
3/22/2010
 3  Allergy relief While on the medication, I did not experience any major side effects. HOWEVER, that all changed as the medicine started to leave my body. I began to experience anxiety, cold hands and feet, difficulty swallowing, nausea, dry mouth, insomnia, shallow breathing, and tension in my lower abdomen. I experienced these symptoms just a week before when I first took the medication. I stopped taking Zyrtec because the withdrawal effects are much worse than my own allergies. Beware for these possible withdrawal side effects: anxiety, heart palpitations, dry mouth, insomnia, nausea, difficulty swallowing, numbness, cold hands and feet, headache, lightheaded, dizziness, shallow breathing. Since I only used it briefly, the withdrawal symptoms seemed to last only about 24 hours. Still a horrible feeling none-the-less. I have not experienced any itching as others may have commonly experienced. That may be due to the prolonged use of the drug. I have been currently taking medications for arrhythmia (irregular heartbeat), blood pressure, and anxiety for about 2 years now. I have not experienced any anxiety until after taking Zyrtec. That is how strong the withdrawal symptoms can be. Bottom line is, CONSULT your doctor before using this medication! Especially if you have any heart or other health complications! M 31 2 days
10 MG 1X D
3/21/2010
 1  seasonal allergies sleeping issues, crying, whining, nose bleeds, stomach aches, attention issues, fatigue My daughter was put on zyrtec last spring for seasonal allergies when she was 5. She took 5 mg. once a day. Her doctor just upped her dose to 10 mg. 3 weeks ago. Since then she has had chronic nosebleeds waking each night, she woke up one night and said she felt like someone was watching her and started to cry when she had to go to bed for fear of bad dreams. She was tired and crying over nothing. She couldn't express what was wrong. She said she felt lonely and sad. She had lost 6 pounds in 2 weeks when we returned to the doctor worried about the nosebleeds. She complained of stomach aches and was not eating well. I also began researching ADD and made her an appointment to get her eyes checked for excessive blinking, thought her eye sight was bothering her. Finally, it dawned on me that this all began when we upped her zyrtec dose. I am so disappointed in my doctor for not checking into this. She is a small child, only 40 lbs. and after researching Zyrtec, took her off immediately. We did have to ween her off as she experienced withdrawal symptoms, mainly extreme itchiness, overall fatigue and feeling crummy. I would use extreme caution with putting your child on this medication. It is supposed to be safe and we trust in our doctors, but my trust is gone. F 39 1 years
10mg 1X D
3/21/2010
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 1  allergies My 7yr old son was on this drug and he will NEVER take it again. Zyrtec made him a different person. He started hurting his sister, was very moody, depressed, etc. Two days after I took him off of it, he was better. I took him off about 6 months ago, and he has not hurt his sister since being off zyrtec. His allergies are okay-he does allergy shots. Watch your child for agression and depression while on this drug! M 7 3 years
5mg 1X D
3/15/2010
 1  Allergies My 5 year old grand daughter had this prescribed by an allergist who wanted her on it full time. I'm an RN and was quite unhappy about putting this child on anything year round....her allergies are minor. She has taken it on and off since she was three. When she took it a couple of months ago we noticed a sudden and very disturbing change in her behavior. She changed from a happy, delightful child into an absolute beast overnight! Totally out of control, very argumentative and unpleasant. Her mother and I were talking and I asked her if there was anything that had recently changed. She reminded me that she had just started her back on her "medicine". I did some research and we were horrified at what I found. We immediately stopped the drug and within 2 weeks she was back to her normal sweet self. In retrospect we think there were various times in the past she had exhibited the same out of control behavior while on this. We now think she was not "going through a stage&quo F 5 1.5 years
10mg 1X D
3/15/2010
 1  Allergies 3.5 yr old son behavior changes (moody, aggressive, sleepless nights, hyper-active, emotional, lack of attention/focus, defiant) 3.5 yr old son was taking for allergies and post-nasal drainage. It helped well with the allergies and drainage. We didn't realize there was anything wrong, we thought a lot of the behavior issues and defiance was his age. We noticed the biggest change after he started Pre-K this past fall. We started getting more and more reports from his teachers of his uncontrollable activity and behaviors as well of his lack of attention. They requested that we speake with the Pediatrician regarding possible ADHD. The problem was, I wasn't seeing it at home much. He took it at night before bed (every night since it was recommended). I am thinking that he was the worst at school because by the time he was home the side-effects were starting to wear off and they were the strongest in the morning. After evaluations were done with the teachers and my family, the doctor agreed it wasn't ADHD. But looking back, after about 1-2 weeks of being on it Zyrtec our sitter stated she noticed his behavior changing and it had gotten progressively worse. For her, he bit a child...that is out of character for him, was hyper active, wouldn't nap, sassy, defiant, ignored her, etc. At school he got to where he was poking other kids, kicked his teacher, hyper, defiant, wouldn't focus, etc). We took him off the Zyrtec and he began changing within the first 2 days he started being more in control, more obedient, less hyper, more sincere and loving. He is slowly getting better each day. Stopped use. M 3.5 11 months
1/2 tsp 1X D
3/11/2010
 1  Allergies Heart palpitations, muscle weakness, extreme lethargia, violent mood swings/anger problems, itchy hives, dehydrated feeling, overall poor health and sick feeling all the time. I have taken this product for a long time. I have used 3 different antihistimines for my allergies over the past 4 years. Its great not to have a runny, sneezy nose 24/7, but over the past few months I have noticed my health declining. The heart problems and muscle weakness are the scariest. I have avoided going to a doctor thinking it must be diet, so I stopped drinking soda and started eating healthier. After a month, I do not see an improvement. Someone told me that it could be the allergy meds and after seeing this site, I am certain of it. I stopped taking the pill yesterday and I should see an improvement in about a month. I will update then. Beware, these side effects are not listed on the bottle people! I feel awful and am very dissappointed. F 31
10mg 1X D
3/10/2010
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History
 3  allergies, runny nose, itchy eyes I took it before bed (I'm allergic to dust and I wake up in the morning congested). I think it worked, but I was so sleepy I couldn't walk a straight line in the morning. I felt like I was hit by a sandbag. It made me sleepier than benadryl. And even just half a pill made me tired. My daughter takes it sometimes and does not get sleepy. But for me? I became non-functioning. F 38 2 days
10 mg 1X D
3/3/2010
 5  Hives No noticeable side effects My daughter had a horrible outbreak of hives when she was just a little over a year old. It happened over the weekend and the ER doctors didn't know what it was. We took her to a dermatologist the next Monday morning, he diagnosed hives. My daughter was taking Zyrtec, Xantac and Benadryl for several weeks to quell the outbreak. She was then put on 1/2 teaspoon of liquid Zyrtec a day to prevent further outbreaks. After a few months we stopped giving it to her, soon after she broke out again. She is now 2 and a half years old and is back on Zyrtec daily, she is doing just fine. She takes it at bedtime. I see no difference in her sleeping pattern or behavior on or off the medication. From the looks of what I have been reading about other children on Zyrtec, I now feel that we have been very fortunate with our daughter. If she would have had adverse effects I would definitely have stopped it. Though, I am concerned about the long term effects of prolonged usage, effects that may not be visible at this time. F 2 1.5 years
1X D
2/28/2010
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 3  sinus headaches Graphic and disturbing dreams; some sluggishness I started taking Zyrtec at night because I was waking up with sinus headaches every morning. It worked well for that, so I have rated it 3. It completely knocks me out, especially if I have had any alcohol at all, even a single glass of wine at dinner, and it takes me a while to get moving in the morning. I have constant, vivid, disturbing dreams almost every night. My husband told me I woke up after an hour last night saying, "Scared, scared" over and over. I have no memory of that. I am going to stop taking this, or at least cut the dosage in half. If you do take it, follow the label warnings - no alcohol. F 56 30 days
10mg 1X D
2/20/2010
 2  severe allergies My son's pediatrician and allergist recommended Zyrtec for his severe allergies (certain trees and grasses, ragweed, cats). Soon after starting it his mood changed. He became violent and had uncontrollable tantrums. He began hitting and throwing and throwing fits about the smallest thing. I never related the behavior to the Zyrtec until he became sick and I stopped the Zyrtec in order to give him cough medicine. He almost immediately returned to the caring loving little man that he always was. Please pay careful attention to your children if you give them this medicine. I feel so bad that I did not relate my son's behavior to the medicine. F 25 1 years
5 ML 1X D
2/17/2010
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 1  Allergies Worked ok for allergies but get excruciating itching when try to stop (most definitely NOT a return of allergies as I never had itching). Found a step down withdrawal method on another website and has been working until now. Currently down to 2.5/mg daily and when I took the next step down of alternating one day on / one day off the itching started again! So will try 2.5/1.25 and then step down again from there. Cutting the pills is a hassle but getting the itching is even worse! I never would've started this drug if I knew how terrible the withdrawal could be. Doctors and the FDA should warn people about this! F 51 10 years
10MG 1X D
2/17/2010
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 1  Sinus issues dark urine, major itching, chills, red eyes, dry mouth I was told by my ENT to take Zyrtec for my chronic sinus issues. It helped with my pain. But then I was having wired side effects. I did not know why I had major itching, dark urine. It was not until I ran out of Zyrtec that I relized it was the drug! I was off the Zyrtec for a week and my urine improved a bit, the itchy rash was getting better. Do not take this drug it not worth the side effects!! I am going to find a better way to relieve my chronic sinus pain, like accupunchure. Chronic means Always. :( F 37 1 years
1X D
2/16/2010
 5  Allergies I think zyrtec is a wonderful drug. It keeps me symptomless when I am on it. A doctor told me once that it is too strong and can cause bacterial infections in the sinuses. So I sometimes only take it every other day. I have been very happy with the results, especially since loratidine and allegra do not work at all. F 55
10 1X D
2/11/2010
 2  2 year olds ear infections My 2 year old son was put on zyrtec for recurrent ear infections. He had a major bahavioral change take place. Uncontrolled temper tantrums for something as simple as taking off shoes. Thought it was just normal 2-year-old changes in behavior, but after stopping the medicine, his behavior has returned back to normal. Be careful when giving this drug to your children! F 2 5 weeks
2.5 mg 1X D
2/10/2010
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 1  Allergies IRRATIONAL ANGER, constant irritability, mood swings, depression, brain fog, crying jags, "thought disorder", lethargy, weight gain, poor nights sleep, swelling around stomach, blurry eyes, lack of motivation.... I use to take this medication before going to sleep, so I didn't make the connection between Zyrtec and the side effects. I also took Claritin on and off for a year prior to Zyrtec which I now see was the beginning of my symptoms. I Googled Zyrtec and weight gain (because I've gained 20+ lbs since starting the med which I can't lose no matter what diet or how much exercise) and found this site. I was shocked by all the posts about the effects this medication had on people's thinking and moods, especially irrational feelings of anger and extreme emotional lability (eg crying over the simplest things.) I stopped taking Zyrtec over a week ago and immediately noticed a difference in my thinking and mood. It was like a dark cloud lifted and the simmering anger I felt inside me all the time GONE. No more negative, obsessive thinking, or crying jags either. All my life, I have always been a positive, easy going, happy person. But over the past 2+ years I was slowly turning into an irrationally angry and over emotional disaster. Friends and family thought I was either having a nervous breakdown or symptoms of menopause. I have even seen a counselor to discover what *issues* were effecting my life, lol. Who'd of thunk that an ANTIHISTAMINE could cause such havoc! I had been attributing my change in mood and personality to the stress in my marriage, fighting, and divorce issues. I see now that Zyrtec has been THE ISSUE. In researching histamines, I discovered that they have to do with neurotransmitter and hormone regulation. Who knows what is going one when they are blocked by an antihistamine. No wonder there are so many psychiatric adverse effects being listed, rather like antidepressants. The children are the canaries in the mine. If so many kids are having such SEVERE emotional and mental reactions, you have to figure this med is TOXIC to ones brain. This med should NOT be OTC. I predict we will see black box warnings on this med pretty soon, maybe even see it be withdrawn from the market. One can hope. F 46 2 years
10 MG 1X D
2/10/2010
 1  seasonal allergies Our high energy 5.5 yrs old son became irritable, moody and clumsy. We are used to his high level of energy but his normal "ready to learn" behavior at pre-school radically changed 2 weeks after he started the medication. For the first time his teacher complaint about my son not listening, ignoring her and taking one bad choice after another. Behavior at home was not much better, since he's always been so active and he has a little brother, it took me a while to realize how out of control was his behavior. I can't believe our DR would prescribe this med without a warning. I am thankful for all the entries, it is important to share this kind of information. M 5 3 weeks
5ml 1X D
2/10/2010
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