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  Allergies Complete change of mental state. Glad I found this site. Started taking yesterday and have been in a complete bitter state since. This drug may work for some or it wouldn't be so popular but for others... watch out. If you take and your nose clears up but you wish everyone around you would just drop dead and you curse everytime your phone rings... probably not the drug for you. Glad it only took my 24hrs to figure this out instead of the 6 months, year, 2 years it took others on this site. In addition, I have all the other negative side effects listed, increased appitite, sleepy, etc. So it must be an all or nothing proposistion. You either are fine with it and you have no side effects or you have all. Suggestion, buy the 5 pack - take one - if it works great. However, if you notice any of the negative side effects, toss them out and move on. It won't get any better, it will only get worse. M 42 2 days
10 1X D
4/13/2010
 1  allergies I took this as well as my 3.5 year old daughter, I took this med. at night and the next day I was so exhausted. Could have slept all day. No energy to do anything. Felt very grumpy, and hungry all day. Couldn't stop eating. My daughter also was very grumpy, hitting things, and hungry all the time that day. I will not take this medication again. My daughter is normally very happy, never hits anything. F 33 1 days
5mg 1X D
4/13/2010
 3  Seasonal allergies I took the one pill once a day right before I went to bed, and it definitely relieved all my symptoms and made me feel great. HOWEVER, I noticed that--even though it had been 12 hours or more since taking the pill--I became VERY tired in the afternoon and evening. Like so tired I fell asleep! This is unlike me. I believe this pill also gave me strange dreams, like even stranger than the ones I normally have. F 35 5 days
1X D
4/12/2010
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 1  allergies Daughter 3 1/2-- really scarry to see my outgoing child turn into a non expressive sad child! She hasn't taken this for some time, but each time I give it this reaction occurs. Same with singular. F 3
1/2 tsp 2X D
4/12/2010
 1  Allergies Hyperactivity, moodiness, argumentative, irrational, loss of focus, headaches We put my son on this for his allergies 3 weeks ago. He started having some issues in school, but we thought it was because he hadn't been at karate lately. I took him off the med for a week to see if it was really helping, his behavior returned to normal. However, we put him back on it 3 days ago and he had one of his worse days at school ever. I finally realize it wasn't his karate that was the problem (he's been in lessons consistently), but the Zyrtec. I Googled to see about side effects and sure enough, he's had very similar negative experiences. I also took the 20mg dose a couple of times and had two of the worse migraines I have ever had. I have a very high pain tolerance and I was actually afraid I might have an aneurysm, it was that bad. This drug will never be in my home again. I am rating this for my son as it is more important that people know how awful the side effects can be for children. M 6.5 18 days
10 mg 1X D
4/12/2010
 5  Severe, Year-Round Allergies none Zyrtec is the only allergy drug that has worked for me. Claritin and Allegra do nothing to relieve my itchy throat, eyes, and nose. There are warnings of drowsiness, but I have not experienced this, nor any other side effects related to taking this medicine. My major allergies are every type of grass, oak and pine pollen, seasonal weeds, cats, shedding dogs, dust...you name it, I'm probably allergic to it. March and April are the absolute worst months for my allergies, and Zyrtec helps to minimize my torment, though, during these months, Zyrtec cannot completely eliminate my symptoms. M 26 5 years
10 mg 1X D
4/6/2010
 3  Asthama/Severe Allergies WEIGHT GAIN! About 15-lbs or more? Extreme fatigue, sometimes jittery even though I feel like I can sleep too. Turned into a rip roaring "B" to my boyfriend if I drink alcohol with it! Dryed out nostrils in the morning, stuffiness. I'm glad to hear that it wasn't my imagination about the Zyrtec causing the weight gain. I can't win...I suffer from allergies/asthma or gain weight and don't suffer. Wonderful. F 44 4 months
5 MG 1X D
4/6/2010
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 1   My 6 yr old son had severe behavioral changes within 24 hrs of taking this drug. He was getting bad behavior reports from school that week. He was depressed, cried over little things, had angry tantrums, was violent,incontinence, sleep disruption and falls from the bed. The only change in his routine was the medicine. I remembered the pharmacist saying it differes from claritin in that it works using the central nervous system (we were not getting any results from claritin). I put the pieces together and took him off the drug and already 24 hrs later he is almost back to normal. This is not for every kid - watch their behavior closely if you try the drug. The label does warn of "mental or mood changes." M 6 10 days
1X D
4/6/2010
 1  My son's pediatrician reccomended My 5 year old son took it and by the third day his behavior was very strange and he had this perpetual sad or tired expression on his face. He was very moody. Just asking him the wrong question would create an angry response. He became whiney and clingy- very unusual for my son because he is generally very independent and cheerful. Where he is generally understanding and forgiving, he was verbally resentful towards me. By the end of day 4 I could not think of anything that would create such a DRASTIC and absurd change EXCEPT something new. I decided it was the zyrtec and googled side effects. Ta da, There are way too many children under 7 years old with these side effects. M 5 4 days
5 mg 1X D
4/5/2010
 3  ALLERGIES Weird Dream, "Hit by a truck" feeling when waking up, Oversleeping I took a Zyrtec pill and after having the weirdest dream ever, I woke up 5 hours late and feeling like I had been hit by a truck. It did stop my sneezing. F 18 1 days
10 1X D
4/4/2010
 2  Seasonal allergies Vomiting, violent shaking, 17 hours sleep Can't think of anything else that was different in the food that I consumed during the day and I haven't had symptoms this violent before. M 52 1 days
10 mg 1X D
4/3/2010
 1  Allergies Dry mouth, had breath Getting off is tough...heart palpitations, chills, sweats, sensation of yoke around shoulders, chest pains F 55 12 months
10mg 1X D
4/2/2010
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 1  allergies heart palpitations-rapid and irregular heart beats; severe muscle pain-leg cramps and bursitis;chronic fatigue-felt exhausted all the time; nosebleeds; mental fog-unable to concentrate; difficulty finishing a sentence because I would forget what I was saying;major weight gain-40 lbs in a year. The palpitations caused me to be diagnosed with atrial fibrillation in the ER a month ago. My leg muscle pain was so bad I couldn't walk 1/4 of a block. Bursitis so bad at night I couldn't sleep. I stopped taking Zyrtec 4 days ago and everything except the palpitations has disappeared. AVOID ZYRTEC !!! M 55 2 years
10 mg 1X D
4/2/2010
History
 3  seasonal allergies Irregular heartbeat I hate that this med causes this problem for me, because it worked fabulous on my post nasal issues. I just can't handle the skipping heartbeats. F 50 40 days
5 mg 1X D
4/1/2010
 5  hives Heart pounding, vivid dreams, dehydration I have a lifelong history of allergies and upon turning 40, possibly entering perimenopause, my allergies worsened. I have continued to take zyrtec after it being prescribed at Mayo Clinic. At times I was able to go down to 5 mg once a day with less side effects. Initially while at Mayo I asked "How will I ever get off this?" because of the rebound reaction every time I tried. The doc replied, "with an eye dropper". I think when I was in my forties the reaction to it was not so severe, but upon entering actual menopause, taking it at night has compounded my menopause symptoms. I am seriously looking into going to the desert (low allergen) to try a taper or wait until winter, maybe even trying acupuncture to help getting off it, because in a sense I am addicted to it. Until then I am trying taking it during the day to reduce the night symptoms and drink a lot of water. Any menopausal women experiencing the same? I would love to hear if someone has effectively switched to something better. F 53 13 years
10 mg 1X D
3/31/2010
 2  Allergies & Hay Fever Zyrtec worked well to cure my allergies and drip. However, I had HORRIBLE side effects, that I didn't fully realize until I stopped taking the drug. Every time I would consistently take the drug I'd gain weight. I'm 5'2" and weighed ~120 forever. After taking zyrtec for 2+ years, I got up to ~133lb. Finally I quit taking it - cold turkey, and within a week of stopping I'm already down to 126lb. Thank goodness! Mentally, I feel so much better since quitting. I'm HAPPY and clear headed, which starkly contrasts the moody self I'd been for years prior. I actually tried to quit taking it several times. Whenever I'd stop I'd get horrible headaches and feel very dizzy. Finally, I was out west where it is very dry for spring break. I quit while I was out there, and had no problems. I think it was easier because it kept me dry while I transitioned off of it. I'll post more as my progress progresses. F 23 3 years
10 mg 1X D
3/30/2010
 3  Seasonal Allergy I am so shocked to find a reason for my symptoms! I recently had gone to a neurologist because of severe headaches I would experience. I also have dreamy dazes where I feel so drowsy and fatigue. I went to the ER everything is fine. I also get frequent bloody noses, ticks every now and then, dark urine, Lost of interest, chest pain, mood swings, feeling confused, insomnia, and EXTREME HUNGER!!!! I'm very social and very outgoing I always question these side effects and I'm shocked to know that something that helped me so much is causing this!! I hope the withdrawal isn't so bad =[ After 3 years I have an answer! This drug needs a new WARNING LABEL!!! M 19 3 years
10mg 1X D
3/28/2010
 2  allergy elevated blood pressure, rapid heart beat(normally 70 BPM, went to90BPM)difficulty sleeping, easily angered with others. Initially helped relieve a cough related allergy. Was very concerned with the high blood pressure( never had it before) and was preparing to see my MD. Even thought of going to hospital because I thought I could be on the verge of a heart attack. I mentioned symptoms to a friend who said it could be the zyrtec. Stopped taking it and three days later heart rate down to 80 BPM and blood pressure 140/100 down from 155/105. Im hoping for continued improvement back to my normal 120/80. Wow this stuff scared me! Never had any heart issues before this. Going to go back to Claritin which had barely any side affects. Fortunately no negstive withdrawal symptoms others have reported. M 59 30 days
10 mg 1X D
3/28/2010
 2  allergies I gave this to my 9 year old son who just struggles with awful allergies to everything. 1 tsp about 6 pm. He went to sleep at 8pm and slept soundly for a while with no sneezing but still sniffling. Woke up around 2 am and was just angry. Yelling, stomping, gritting his teeth mad at everything. Couple hours later fell asleep .Got up for breakfast in a worse rage. Went from room to room forgetting why he went there.I kept him home from school, he fell back asleep after breakfast and woke up at 1:30pm (when I woke him up) Wow, that was scary. Never again. This completely changed his personality in one dose and he was very , very sleepy with it. I really was hoping we had found something to help him. I'm angry I wasn't warned. M 9 1 days
1 tsp 1X D
3/27/2010
 1  allergies Although I have not had any allergy issues while on Zyrtec, the weight gain and bloating I have experienced has been alarming. I have also suffered severe lethary. These side effects really hit me these past two months of my six months use. Not worth it. I am off it. Two days... itching, nausea. Cannot wait for it to be out of my system. F 35 6 months
20 mg 1X D
3/26/2010
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