ZYRTEC Reviews (CETIRIZINE HYDROCHLORIDE)Average Rating: 2.0 (1816 Ratings)Filter ResultsCompare ZYRTEC with similar:
Type: Over-the-counter Drug
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Results are sorted by Age from youngest to oldest (reviews with no age reported listed first). Key to Ratings: 1=LOW (I would not recommend taking this medicine.) Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 |
More on ZYRTEC: Reviews Summary | Drug Safety Information
| RATING | REASON | SIDE EFFECTS FOR ZYRTEC | COMMENTS | SEX | AGE | DURATION/ DOSAGE | DATE ADDED |
| 1 | Allergies | Horrible over the top anger about things that do not matter. I went into a rage at a drugstore because the sale price was not ringing up properly three hours after I took one single dose. So not at all like me. Horribly scary. I really understand how people can do horrible violent thing while taking this. | This is a terrible drug. It should not be sold to adults or children as in instantly creates deep dark strange anger. It also exhausted me for days afterward. I feel as if I took poison. It makes me very afraid that I bought this the day it was recalled and it was still on shelves at Walmart. I would rather sneeze 60 times in a row than want to harm people and be a raving lunatic. | F | 37 | 1 days 1X day | 5/5/2010 | 1 | seasonal allergies | Severe stomach pain and bloating. 24 hour dosage did not leave me symptom free during that time period. | F | 37 | 2 days 1X day | 6/13/2010 | 1 | seasonal allergies | my son is soon to be 7 yrs old and was prescribed zyrtec syrup when he was 2 yrs old for chronic ear infections related to allergies. He had then developed behavioral problems and has had them on and off since. After being off zyrtec for a couple of months now his behavior has turned around. Today he woke up stuffy and naturally I gave him zyrtec. Horrible day at school. Outbursts and aggressive. I couldn't put my finger on what was different about today except the zyrtec and when I found this site and all I have read I am horrified. I will never give him zyrtec again. | Thank you for sharing your comments. Because you shared - you may have saved my son. | F | 37 | 5 years | 1/30/2008 | 1 | Seasonal Allergies | slight depression, agreesion and irrationality | This medication only midly improved my runny eyes and nose. The side effects were that any small thing irritated me and after being on it for several days caused me to become aggressive (which is NOT my personality). I was somewhat irrational in my thought processes. Also suffered from feelings I can only describe as slight depression. | F | 37 | 20 days | 4/18/2008 | 1 | allergies | disorientation; severe fatigue; inability to think clearly; constant sleeiness; vivid, horrible nightmares; | I was recently switched from Allegra to Zyrtec due to an unexpected pregnancy. I had taken Allegra for years with no side-effects. Immediately after taking Zyrtec, I was unable to function at all. I could only stay in bed most of the day. Thankfully, I am a teacher and this happened during summer break. I can easily see why this medication could cause suicide. I would NEVER take this medicine ever again. | F | 37 | 6 days | 6/16/2007 | 1 | Allergies, Eczema | Extreme Tiredness, Insomnia, Mental Confusion and loss of concentration, Irritability, Lethargy, Prostate Problems | I have suffered from hay fever, rhinitis and eczema my whole life. I recently had a severe bout of eczema (which I never had before) - itching, redness, sweating and scaling skin. Started to take Zyrtec daily over the last four months to control it. Worked great in the first month then I began to experience severe side effects (which up until now didn't attribute to Zyrtec). This drug caused extreme fatigue for me 24/7. It was like taking valium and speed at the same time. The tiredness was so bad I was falling asleep in the afternoons and generally was in a mental fog at work (forgetful - thought I had early alzheimers) but could never sleep during the night. I could not get out of bed in the morning. The sleep depravation and general lethargy become so bad that I became depressed and irritable all the time. I would literally pray to God at night to help me sleep. Mentioned my Insomnia to my MD and he said I may have to go to a sleep clinic to find out the causes (ironicall | M | 37 | 4 months | 10/17/2008 | 1 | Allergies | I ran out of my Allegra and took Zyrtec once. I became disoriented, confused, and could not remember a significant part of the evening. It was enough that my doctor is now making me get an MRI to make sure there wasn't another cause for the memory loss. | F | 37 | 1 days | 10/24/2008 | 1 | Seasonal allergies | Being in a fog. Dizziness, drowsiness, fatigue, insomnia, anxiety, panic attacks, nervous ticks, confusion, stuttering, mood swings,upset stomach, waking up very nervous, loss of appitite and libido. | I noticed alot of these symptoms about 5 days after taking the medication and it just got progressively worse. Two days after i stopped taking it I had a massive panic attack with itching all over. The third day off the medication was a little better. Still nervous on the fourth day. I called my doctor and she said that she has seen my symptoms before with zyrtec and that basically I’m allergic to it. She told me to never take it again. It was a relief to hear from a doctor that i wasn’t crazy and that this is something that she has seen before. She told me that it should be out of my system completely in a few more days. I am a nervous person anyway, but this has been a nightmare! My wife and two girls take it and have no issues. I have never experienced anything like this. | M | 37 | 16 days 10 mg | 6/1/2018 | 1 | chronic urticaria | I was taking fexofenadine but my consultant recommended citirizine. After only 3 days my feet swelled so much that I could not walk. My skin stretched so tight, became bruised and turned red and purple. My urticaria turned into huge blood spots and the itch became more intense. I cried from the pain in my feet for the 3 days I was on this medication. I stopped using this on day 4. The swelling receded but left severe bruising all over my body. I regret taking it. | Please be careful. This is dangerous medication. | F | 37 | 3 days 30mg | 4/26/2015 | 1 | Seasonal Allergies | My 4 year old has been on Zyrtec for 2 weeks. Irritability, mood swings, extreme fatigue, acting out, defiant, sad, etc | My son's behavior changed so dramatically on this medication, it was scary. He became a different person. My husband and I kept trying to pinpoint what was causing the changes and by chance I googled Zyrtec side effects and found this page. Thank God. I absolutely believe this is the cause and he will NOT be on this medication again. | F | 37 | 12 days | 4/8/2009 | 1 | allergie | Blood in the urine,fog brain, kidney pain,low blood pressure,tired, feeling really weird...NO MORE ZYRTEC !!!! | M | 37 | 30 days | 5/11/2009 | 1 | allergies | Sleeplessness. Night wakings for hours!!! | My 3 year old daughter started this medication b/c she keeps getting ear infections. The ENT's thought was that she is having mucus settle and is causing the chronic problem. After 5 days she slept great; after 6 days it has become hell!!! She usually goes to bed happily. Now she screams herself to sleep and is up for most of the night. This stuff is awful!!! I'm calling the ENT on Monday. This is not worth the side effects of a 3 year old and entire family not being able to function due to exhaustion. | F | 37 | 12 days | 1/11/2009 | 1 | Allergies | Severe mood swings, uncontrollable trantrums | My daughter was on the medication for 2 months before and in that time she went from a sweet happy chld to a monster. I was ready to take her to a psychologist or doctor to see what could be wrong and was looking up all kinds of disorders until we realized the behaviors conincided with taking Zyrtec. She was completely back to normal after being off the medication for a week. Be very careful before putting a child on this medication. | F | 37 | 2 months | 1/7/2009 | 1 | Itchy eyes, nose and throat | Extreme sadness and irritability | I am a mother of four who has never felt as sad and emotional as I did during the two weeks of taking Zyrtec. Post-partum is a walk in the park compared to how I felt taking this. I can not believe that this product has not been pulled from shelves. I will NEVER take Zyrtec again and have made sure to share my experience with my family and friends. I am so upset for all of the unsuspecting parents out there who have only followed the advice of their doctors and given Zyrtec to their children. | F | 37 | 10 days | 3/17/2009 | 5 | sneezing, wheezing, itchy eyes... | I can tell I have been bloated. Increase in appetite. A "little" bit of anxiety. | It works so well against allergies. I am happy to put up with these minor side effects for the month of September when my allergies are terrible in Los Angeles. Weeds I guess? It literally knocks these allergies out and that is usually hard fight for me. I have been getting allergy shots (imunotherapy) every week for a year. It cleared all the other allergies throughout the year, but when September rolled around I was still bad. Not as bad as last year. With Zyrtec it was Zero. Nothing else works. | F | 38 | 1 months | 10/4/2008 | 5 | Apparent allergies | I had no side effects at all from this drug. Sure if I sat still and did nothing I would get drowsy. I would take this medicine at approx. 1-2 pm each day. (after already being awake for 5-7 hours. So I think it was just mid day drowsiness. This stuff worked great compared to how i was suffering before taking it(cold like symptoms). One reviewer complained of suicidal thoughts, another said irratibility and bad/weird dreams? Sounds to me like you folks were taking Chantix or some other drug to help quit smoking since those are definitely side effects listed on Chantix/Zyban sheets. | I should add I began the attempt to quit smoking about the same time my "allergies" manifested themselves, so maybe the two were related. I havent had allergies since I was a little kid. I stopped taking the Zyrtec about two days ago and have not noticed any change in anyway so far as allergy symptoms coming back. Im thinking it was just a fluke as I was cleansing my body from 20+yrs of smoking. guess I will see in the coming week or so as the Zyrtec leaves my sytem. | M | 38 | 45 days 10mg 1X day | 5/31/2010 | 5 | seasonal allergies | none | No side effects, seems to work well. Zyrtec D is also good for those times when your allergies combine with a cold and you get a higher level of congestion. | F | 38 | 10 mg 1X day | 5/14/2010 | 4 | congestion | Restlessness ,tossing and turning at night,waking up very often ,depressed | I will not ever take this stuff again | F | 38 | 7 days 5 - 120 | 11/5/2014 | 4 | Allergies | Dry mouth, mild sedative effect, more hungry all the time, some weight gain. | Zyrtec works well, but I do sometimes feel foggy and more tired at times. Hunger and weight gain are the only other issues, but, compared to the Claritin, I'd rather do without the anxiety. | M | 38 | 5 years | 12/29/2009 | 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 day | 3/3/2010 |