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ZYRTEC (CETIRIZINE HYDROCHLORIDE) reviews and ratings reports

The average rating for ZYRTEC (CETIRIZINE HYDROCHLORIDE): 4

Company
PFIZER
Reviews 1209
Votes 1209

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

If you want to share your experience on ZYRTEC (CETIRIZINE HYDROCHLORIDE)
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2 Age.
3 Side effects.
4 Time taken and dosage.
5 Review.
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10 
ADHD
by Reviewer44294
on June 30, 2010
Sex: M
Age: 12.0
Side effects: During the time of my journey through life, I had noticed that every time I played video games I would only go for body shots, but after taking Zyrtec, all I would want to get were HEAD SHOTS. I felt extremely angered by normal everyday noobs. After I started taking Zyrtec I wanted to PWN them like they have never been Pwned before, and I still have ADHD!!? whats up wit dat?Head ExplosionsPublic UrinationEvery time I get a gun in my hand, it automatically points to someones head.Uncontrollable peanut butter texture of my stoolSpeaking EbonicsBlack RageThe plague
Time taken and dosage: 20 days10mg 2X D
Review: Zyrtec gave me AIDS.
2 
congestion
by Reviewer44295
on June 28, 2010
Sex: F
Age: 2.0
Side effects: My daughter,2, started taking the target brand and every day, all day was a fight and tantrum. She started banging her head HARD. She also stopped eating which I thought the tantrums were coming from.I had forgot to give her her med. and I noticed the tantrums stopped, her behavior returned to normal, and she stopped banging her head. Its like night and day.I wouldnt recommend this for any child. Especially if you as a parent dont want to jump off a cliff!
Time taken and dosage: 2 months2.5 ml 1X D
Review: NEED TO POST SIDE EFFECTS!!!
4 
Allergies
by Reviewer44296
on June 23, 2010
Sex: M
Age: 28.0
Side effects: I am so thankful for this website. I thought I was losing my mind. After taking Zyrtec a couple of weeks ago for seasonal allergies, I thought my down mood was a result of other things. I quit for a while and took one last night. When I woke up, I was unusually irritable. Things that shouldnt upset me would throw me into a fury. Usually passive and easy-going, I realized that this medicine transformed me into something I did not like. Not that Im happy I see others experiencing this, but this website lended some validity to my hunch that Zyrtec was causing it.
Time taken and dosage: 1 days10mg 1X D
Review: For the people running this survey, sex is male/female (biological); gender is masculine/feminine (a social trait).
2 
seasonal allergies
by Reviewer44297
on June 23, 2010
Sex: M
Age: 9.0
Side effects: depression, lack of concentration in school, panic attacks, fear and anxiety, anger.
Time taken and dosage: 5 months10 MG 1X D
Review: My 9 yr old son was prescribed Zyrtec by his pediatrician. We noticed an immediate change in his attitude, behavior and grades. He was a very happy, motivated, straight A student. His personality completely changed. We thought his mood and behavior problems were just caused by his age and a new friend. We had no clue about the side effects of this drug until he stopped taking it just to see if his allergies were gone. After stoping the drug. It took about 10 days for the panic attacks to start(multiple times a day). He would just cry and shake and say his head felt funny. After taking him to his doctor, getting lab work done, EEG, EKG, referal to a pediatric psychologist I was told about the effects of this drug in children. I cant believe doctors are not talking to their patients about these severe side effects!!! Take your child off of this drug immediatly!!!!!!!
10 
seasonal allergies
by Reviewer44298
on June 21, 2010
Sex: M
Age: 33.0
Side effects: None
Time taken and dosage: 1 years2.5 to 5mg 1X D
Review: Im posting to counter many of the negative comments which can be attributed to other factors, and to counter the the self-selection bias. Sure Ive had dizziness, problems falling asleep, and hair loss, but all of these occurred long before I started taking Zyrtec! In the interest of full disclosure though, I only take enough to counter 95% of my symptoms so Im not flying blind and risking overdosing.
2 
seasonal allergies
by Reviewer44301
on June 15, 2010
Sex: F
Age: 56.0
Side effects: Bought this instead of Claritin which I have taken for years with noe problem. Within hours- stomach ache, bloating, no appetite and my mood changed. Symptoms did not go away. Took Zyrtec for three days and finally connected my gastroparesis with this OTC med. Vivid dreams started first night. Will never take this again.
Time taken and dosage: 3 days10 MG 1X D
Review:
2 
Allergies
by Reviewer44302
on June 14, 2010
Sex: M
Age: 19.0
Side effects: Drowsiness, lack of concentration,lack of motivation,EXTREMELY INSANE VIVID DREAMS,hearing voices, hallucinations, ANGER, mood swings HAIR LOSS.
Time taken and dosage: 9 months10mg 1X D
Review: Last summer i found out that i didnt have a weak immune system, i just had allergies. Since then, I found Claritin did nothing for me and neither did the nose pumps, when i discovered zyrtec it was a different world. Although it cleared up all my allergies i began to notice an unusual amount of vivid dreams, sometimes even voices in my head, definitely nightmares. They would only happen 1-2 days after taking the pill. A lot of the people i talk to on a normal basis believe ive been going through serious mood swings that i never had before. People have told me that they do not see the motivation they used to see prior to taking the medication. ive also experienced hairloss on my face, primarily on my sideburns.
2 
seasonal allergies
by Reviewer44303
on June 13, 2010
Sex: F
Age: 37.0
Side effects: Severe stomach pain and bloating. 24 hour dosage did not leave me symptom free during that time period.
Time taken and dosage: 2 days 1X D
Review:
6 
Chronic year-round allergies
by Reviewer44304
on June 10, 2010
Sex: F
Age: 22.0
Side effects: I used to alternate taking this drug with Claritin. For example, Id take a Claritin one day and the next day a Zyrtec. Then I ran out of Claritin so I started taking Zyrtec daily. Zyrtec dried out my nose so much that it felt plugged up, which was only a minor side effect. However, it made me incredibly drowsy, and I would have to go lie down because I couldnt physically keep my eyes open. The worst side effect I experienced were very disturbing nightmares. I woke up multiple times in the night with these dreams that seemed so real and it was scary. It was not a pleasant experience. I also experienced a good bit of sneezing while taking this drug.so it wasnt that effective.
Time taken and dosage: 2 weeks10mg 1X D
Review:
2 
Allergies
by Reviewer44305
on June 9, 2010
Sex: F
Age: 26.0
Side effects: anxiety, lack of sleep, depression, anger, lack of motivation
Time taken and dosage: 4 weeks5 mg 1X D
Review: I was told to take this by my physician.
8 
bad allergies
by Reviewer44306
on June 8, 2010
Sex: F
Age: 49.0
Side effects: mild drowsiness at times; most people I know take it before bed for this reason; I take in in the morning, otherwise I forget; if you go off, you will have intense itching, which makes sense -- youve been taking an antihisamine, which controls allergies -- when you go off, your body has to readjust itself
Time taken and dosage: 3 years 1X D
Review: You people are nuts. I only checked these reviews because I have been on Zyrtec for years and if I go off, I am sicker than a dog in a week or two. I am about to go on Astelin spray also, and reviewers bashed it, so I thought I would see what the average person said about Zyrtec. And it was bashed also. It truly is great drug. I use the generic, and because my allergies are so bad certain times of year, I have to supplement with a spray.
6 
allergies
by Reviewer44307
on June 8, 2010
Sex: F
Age: 45.0
Side effects: Just classic drowsiness and feeling mentally fuzzy - but probably just due to being so drowsy. I could not take this med again unless I had a really severe allergy attack, because, even with 4 cups of tea, I cant tolerate the tiredness. :/
Time taken and dosage: 2 days10 MG 1X D
Review: Took this for the spring allergy season - eyes and skin itching like crazy, congestion etc. Zyrtec works fairly well but made me drowsy, even half a pill. Weird positive side effect: reduced hot flashes.
2 
Allergy (cypress pollen)
by Reviewer44308
on June 5, 2010
Sex: M
Age: 45.0
Side effects: Took before going to sleep. Racing/pounding heart 1 minute after taking (and for several hours). Abdominal contractions (for 15-30 mins). Extremely dry mouth. Woke up in the middle of the night with vivid dreams and feeling strange. Second night I only took a 1/2 tablet but just as bad for the heart and sleep disturbance. I then stopped the treatment but the sleep disturbance continued every night for 15-20 days. Two months later I am still regularly waking up at 3 or 4 am (often in a anxious state) a couple of nights a week (maybe once a month before I took the ZYRTEC). I also seem to be having fluctuating blood pressure (rose to 184 / 72 during sleep in a 24 hour test).
Time taken and dosage: 2 days10 mg 1X D
Review: After what I experienced I cannot understand how this drug is still on the open market. I took a generic made by Arrow (bought in France).
4 
Allergies
by Reviewer44309
on June 2, 2010
Sex: M
Age: 40.0
Side effects: When I slept on my right side I would dream that Bigfoot or chewbaca was watching me. When I would wake up Id feel very drowsy and turn to my left side and dream a dinosaur or Godzilla was trying to swipe me with their tail. I would never take this medication. Also had sleep paralysis.
Time taken and dosage: 4 days5 1X D
Review:
10 
Apparent allergies
by Reviewer44310
on May 31, 2010
Sex: M
Age: 38.0
Side effects: 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.
Time taken and dosage: 45 days10mg 1X D
Review: 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.
8 
year round allergies
by Reviewer44311
on May 30, 2010
Sex: F
Age: 22.0
Side effects: Made me fall asleep
Time taken and dosage: 4 weeks 1X D
Review: I decided to take Zyrtec after i tired every other allergy medicine out there and none worked which wasnt too good for me living in the country and owning 4 dogs 3 cats 2 ducks a ferret and a rat (a small farm yes lol). I m taking the 24 hrs ones so i started taking my pill in the morning. Immediately i started to fell groggy and if i sat for too long id fall asleep which was weird for me because i find it extremely hard to sleep during the day. After a few days i started a strict schedule of waking up at 5-6am taking my pill and going back to sleep. I wake up a few hrs later feeling great and allergy free! If you are going to take Zyrtec make sure you have a definitely plan or else it will make you feel weird. Besides that ive had absolutely no problems. Make sure you figure out whats best for you though and not listen to all the scary things people say because every experience will be different.
4 
Review
by Reviewer44312
on May 27, 2010
Sex: M
Age: 23.0
Side effects: dizziness, restlessness, lethargy, drowsiness
Time taken and dosage: 2 months 1X D
Review: Zyrtec worked great at solving my allergies issues (including stuffy/itchy nose and dry eyes) however, the side effects have not been as kind. In the past two months, Ive taken the pill two or three times a week right before I go to bed. While I sleep through the night, the next day I always feel dizzy and restless, as well as can barely keep my eyes open. This only happens after taking the medicine (otherwise Im fine). the final straw with the meds, was my inability to keep my eyes open while on the road. Having an hour and a half commute home, I found it extremely hard to stay awake. This was scary because I have never had this issue before. I dont know if I would recommend this to anyone.
2 
indoor/outdoor allergies, asthma
by Reviewer44313
on May 27, 2010
Sex: F
Age: 42.0
Side effects: where to begin.basically, all of the side effects listed in this forum by everyone else; and, the problems began within a couple of hours of my first dose . culminating with suicidal thoughts, raging and irrational anger (at everyone, for not one single reason), a fever of 104F, insatiable hunger (starvation mode, for sure), and freezing extremities while sweating profusely everywhere else. and on and on
Time taken and dosage: 3 days10mg 1X D
Review: I bought the CVS Pharmacy brand (and after checking with the Pharmacist that there arent any side effects beyond the possible drowsiness listed on the packaging). He said none that he is aware of, and the product wouldnt interfere with my daily asthma medication.Well, it definitely interfere with my life, desire to live, and desire to be around anyone else; asleep at 8pm only to have disturbing dreams, heart palpitations, and a heaving chest for the next 12 hours.I finally connected the dots on Day 3 -- and stopped; then I had withdrawal symptoms for two days (the same ones others listed here in this forum) New, more comprehensive Warning information needed with this product. Please. I dont want one more person to experience 60 days of hell on Earth as I did . followed by 48 hours of awful withdrawal symptoms.
2 
allergies
by Reviewer44314
on May 27, 2010
Sex: F
Age: 31.0
Side effects: My 4 year old son has minor alleriges so we decided to try childrens Zyrtec. At first it worked to clear up his allergy symptoms that led to sinus infections, but after a while my husband and I noticed some negative side effects. My sewwt, lovable son became a nightmare. He was moody, wouldnt eat and very irritable. We had to stop for a while because of the recall and he was his normal self again. We started thinking it was because of the Zyrtec but dismissed it until he started on it again. He has been irritable again he didnt eat his lunch or dinner. We are DONE!
Time taken and dosage: 5 months1/2 tsp 1X D
Review:
2 
seasonal allergies
by Reviewer44315
on May 27, 2010
Sex: F
Age: 53.0
Side effects: My son committed suicide because of this drug. He was 18 years old with seasonal allergies. He had tried Clariton before but didnt work too well. Heard about Zyrtec and decided to try it. Was on it for two months then committed suicide. We found out he had been depressed,became withdrawn, hearing voices, not sleeping well. Never took anything else, never had any problems mentally before. Was a straight A student, happy, had everything going for him. The only thing different in his life was taking the Zyrtec. I attribute Zyrtec to his suicide! Especially after reading all the negative comments from everyone else.
Time taken and dosage: 2 months10 mg 1X D
Review:
6 
Severe Allergies, Hayfever
by Reviewer44317
on May 25, 2010
Sex: F
Age: 24.0
Side effects: Severe exhaustion, Dizziness, Depression, Vivid dreams/nightmares, gas, bowel issues, Anger/Irritability, Weight Gain
Time taken and dosage: 3 months10 mg 1X D
Review: This medicine worked 100% great in controlling my allergies and hayfever sxs but the side effects are unbearable! I had been considering my allergy med, as I have been pretty stable before starting this med and now this side has confirmed the cause of my sxs!
10 
Allergies
by Reviewer44318
on May 24, 2010
Sex: M
Age: 25.0
Side effects: None. Ever. In 10+ years of taking the medicine, from brand name to generic Kirkland and Equate versions when it came off-patent.
Time taken and dosage: 10 years10mg 1X D
Review: You people are nuts. Part of the human experience explains many of the symptoms that are being stated here. We all have our up and down days, but guaranteed if you kept a log of what happened and when in relation to your taking medicine (of course over a relatively long period of time), youd unlikely find any trend suggesting that the drug creates these symptoms. I still get headaches when there are large atmospheric pressure changes, and get a little bit of a runny nose in the winter. Zyrtec helps me day to day, but in the heaviest of allergens (or even unknown events) benadryl or sudafed are the way to go. There are no panaceas for any disease.I know you all believe that the big corporations are lying to you as part of some crazy mind-control scheme, but perhaps you should take a venture into reading the literature on the drug. Just google uspi_zyrtec.pdf for the data sheet. The data sheet states Most adverse reactions reported during therapy with ZYRTEC were mild or moderate. Inplacebo-controlled trials, the incidence of discontinuations due to adverse reactions in patientsreceiving ZYRTEC 5 or 10 mg was not significantly different from placebo (2.9% vs. 2.4%,respectively). That means that there were NO patients in all 6000 patients who felt uncomfortable or experienced uncomfortable enough symptoms to stop treatment that could have been explained by more than random chance.
8 
Sever Allergies
by Reviewer44319
on May 24, 2010
Sex: M
Age: 52.0
Side effects: Trouble Urinating. Painful urinating.
Time taken and dosage: 7 days120 mg 1X D
Review:
2 
allergies
by Reviewer44320
on May 24, 2010
Sex: F
Age: 23.0
Side effects: took zyrtec at about 10:30 in the morning.was at work and started feeling really tired and dizzy. At about 2pm I felt like I had the flu, my throat hurt so bad i couldnt swallow and it was swollen. My fever spiked up to 100.5 (i usually run about 97.9) and it was horrible. I barely slept all night, woke up about every 20 minutes with a jolt. still feeling flu-like the next day. I really hope it gets out of my system soon.
Time taken and dosage: 1 days10mg 1X D
Review: I really dont recommend this drug to anyone. I took it once and will never ever take it again.
2 
I have really bad allergies
by Reviewer44321
on May 23, 2010
Sex: M
Age: 21.0
Side effects: Depersonalization, mood swings, tiredness, general feeling of being out of it.
Time taken and dosage: 2 weeks5 1X O
Review: I suffer from severe allergies, especially in the spring when all the pollen comes out. I used to take regular Zyrtec a few years ago back when it was available as a prescription and I felt fine. It worked great for me.A few weeks ago I bought some Zyrtec-D and began taking it as directed. One tablet every 24 hours. Within a few days I started feeling moody and I snapped at people that I love over the stupid things. That combined with the tiredness made me think I was coming down with a cold but I never did.I kept taking it and within the last few days I have had severe depersonalization. I feel as though I am watching myself from within. Like I am living without actually living and experiencing life. I stopped taking it yesterday and the feelings have lessened but I can still feel the effects of taking Zyrtec. I would rather sneeze every day than suffer with the terrifying side effects of this drug.
2 
allergies
by Reviewer44322
on May 22, 2010
Sex: F
Age: 65.0
Side effects: Wanted to sleep all the time, could not stay awake. Felt like brain was in a fog. Dizzy when walking.
Time taken and dosage: 3 days10mg 1X D
Review: Side effects are terrible. Yes, it stopped the dripping nose and eyes, but at what cost. Its been over 60 hours since last dose and Im just now feeling normal again. Will never take this stuff again.
2 
allergies
by Reviewer44323
on May 21, 2010
Sex: M
Age: 42.0
Side effects: Depression, anxiety and severe mood swings (anger)
Time taken and dosage: 2 weeks10 1X D
Review: Clearly this drug acts as a psychotic.Very scary. Will not take again.
2 
allergies
by Reviewer44324
on May 21, 2010
Sex: F
Age: 30.0
Side effects: extreme exhaustion. starving. confusion. mood changes. irritability. LETHARGY.
Time taken and dosage: 4 days10 mg 1X D
Review: i cannot believe an antihistamine could have this affect on me. i am usually able to overcome any lethargy caused by benadryl, for example, but the exhaustion from zyrtec is disabling. plus i cant think straight. i feel crazy and like nothing is real. maybe this forum isnt even real. i am sad. usually i am happy no matter what. i am annoyed with the universe. i would rather feel ANYTHING than this. i will never take this drug again.
2 
allergies
by Reviewer44325
on May 19, 2010
Sex: F
Age: 12.0
Side effects: After only taking this medicine once, I expericed stomach pains,sore throat, runny nose, pressure build-up in my nose,and inability to sleep through out the night.
Time taken and dosage: 1 days10mg 1X D
Review:
8 
seasonal allergies
by Reviewer44326
on May 18, 2010
Sex: F
Age: 41.0
Side effects: Ive been having the most bizarre, vivid dreams--some quite scary. Ive also felt a bit depressed and have been extremely gassy. I figured the dreams might be a result of the zyrtec, but I didnt connect the depression or the gas until I visited this site. Ive also had minor irritability, though it would be hard to definitively blame the zyrtec.
Time taken and dosage: 6 weeks 1X D
Review: My seasonal allergies are almost nil. This is the best spring Ive had since I moved to Michigan five years ago, and Ive been hearing LOTS of people complaining about how bad it is this year.
2 
allergies
by Reviewer44327
on May 18, 2010
Sex: F
Age: 34.0
Side effects: my daughter is 4 and she has been taking zyrtec for about 1 year for allergies, I recently noticed that whenever she would have a meltdown it was after getting zyrtec. I began to watch more closely and definitely pinpointed it to the zyrtec. She goes into almost a complete rage and becomes a totally different person. I was referring to it as a pyschotic episode-only way I could explain. Im so glad I found this website because I definitely know its the zyrtec now. It is going in the garbage and I will call her doctor tomorrow and explain and see what else we can try. I just feel bad it took me so long to realize what was causing these episodes.
Time taken and dosage: 1 years2.5 ml 1X D
Review:
2 
Seasonal allergies
by Reviewer44328
on May 18, 2010
Sex: M
Age: 45.0
Side effects: Most severe: Extreme fatigue, extremely severe dizziness, inability to remain asleep, vivid/disturbing dreams. Less severe: Mood swings (sad to angry and back), mild depression, inability to concentrate for long periods.
Time taken and dosage: 45 days10 mg 1X D
Review: The fatigue and extreme dizziness were the most debilitating side effects. Upon rising from bed, I was so dizzy that I actually fell several times before making the connection to Zyrtec and stopping it. I slept poorly and no amount of sleep would reduce the severe fatigue. Dizziness was worst upon rising, but was persistent to a lesser degree throughout the day. Mood and concentration may have been a side effect of the drug and/or the poor sleep and fatigue. Sadly, it does seem to work better on my allergies than anything else Ive taken, but the negative side effects FAR, FAR outweigh its benefits. Symptoms resolved themselves within 2-3 days of stopping the medication. Ill just have to buy tissues and suffer. My nose may run, but at least the room wont be spinning all the time.
4 
allergies
by Reviewer44329
on May 17, 2010
Sex: F
Age: 44.0
Side effects: I was so tired & exhausted all the time. It only helped some of my eye symptoms, it didnt really help my nasal symptoms.
Time taken and dosage: 20 days10mg 1X D
Review: I took a generic version.
2 
allergy symptoms
by Reviewer44330
on May 16, 2010
Sex: F
Age: 25.0
Side effects: It made me beyond exhausted, and it did the same thing to my boyfriend. For about an entire day, all I wanted to do was sleep. However, I felt tired no matter how much I slept; sleep didnt make me feel rested. While awake, I felt anxious and my ability to concentrate was squashed. Meanwhile, my allergy symptoms were still pretty bad! The medicine only helped a little bit. Im never taking a medicine with cetirizine hydrochloride again. It felt as if I hadnt slept for days, and couldnt get any relief.
Time taken and dosage: 1 days 1X D
Review: I took Targets generic version, but its the same as Zyrtec and even says to compare the two on the box.
2 
seasonal allergy
by Reviewer44331
on May 16, 2010
Sex: M
Age: 48.0
Side effects: Exhaustion and severe anger.
Time taken and dosage: 4 days 1X D
Review: Additional warnings are needed for this drug. Use caution if operating an auto or machinery!
10 
seasonal allergies
by Reviewer44332
on May 14, 2010
Sex: F
Age: 38.0
Side effects: none
Time taken and dosage: 10 mg 1X D
Review: 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.
8 
year round allergies
by Reviewer44333
on May 14, 2010
Sex: F
Age: 41.0
Side effects: I have not experienced any side effects at all. Also, my six year old started taking this product a few months ago - and she has not experienced any side effects either. I am with the person who posted above in saying that the only people who seem to leave ratings are those with freakishly bizarre side effects. This product has worked well for us (and several friends of ours) for years and nobody I have talked to in person has experienced and side effects from it. :)
Time taken and dosage: 4 years10mg 1X D
Review:
4 
seasonal allergies
by Reviewer44334
on May 13, 2010
Sex: F
Age: 59.0
Side effects: Restless less syndrome, rapid heartbeat, a sensation of my entire body vibrating, occasional difficulty sleeping, anxiety, tired feeling during the day. I take the tablet at night, just before bed.
Time taken and dosage: 90 days10 mg 1X D
Review: It did work on the allergies. I had constant post nasal drip from mold and pollen allergies. The drip caused coughing and other typical allergy symptoms. The generic Zyrtec did clear this up quite a bit, not completely. But the side effects are too much to put up with, so Im quitting the Zyrtec. Id rather have allergies.
2 
Asthma
by Reviewer44335
on May 13, 2010
Sex: F
Age: 43.0
Side effects: Massive appetite increase and gained 14 pounds. Sleepy all the time.
Time taken and dosage: 30 days10mg 1X D
Review: I couldnt understand why I was gaining weight all of a sudden and started thinking about what was different and realized that my doctor had added the Zyrtec. I stopped taking it and within 4 days Ive lost 10 pounds.
2 
Seasonal Allergies
by Reviewer44336
on May 12, 2010
Sex: F
Age: 25.0
Side effects: Withdrawl, Abdominal Cramping, Foggy, *INTENSE* scary dreams
Time taken and dosage: 3 weeks5mg 1X D
Review: Always suffered from IBS but had been without a flare for almost a year then suddenly was hit with extreme cramping etc. Traced it back to this med so I stopped taking it. If I go without it I get itchy (ears, face, scalp, hands etc)and get a MASSIVE headache complete with nausea. At first I thought it was just a normal migraine but it didnt follow the right pattern and lasted for days. Horrible medication and there needs to at least be warnings of these side effects on the package.
2 
All year allergy and astma
by Reviewer44337
on May 12, 2010
Sex: F
Age: 30.0
Side effects: Non expect a bit drowsy
Time taken and dosage: 15 years10 mg 1X D
Review: After taking zyrtec over 15 years (first 5 years seasonal afterwards all year long) it doesnt seem to help anymore. It used to work really good. But now still sniffing and sneezing all day long. But if I dont take it, (I tried to quit zyrtec) Ill be itchy all over and cant sleep. Cant go walking with the dogs cause my legs start to itch unbearably. However reading all these comments I will quit this evil Zyrtec.
8 
seasonal allergies
by Reviewer44338
on May 11, 2010
Sex: F
Age: 46.0
Side effects: No side effects whatsoever. I really want to try and put some peoples minds at rest because it seems the only people who ever leave ratings are people who have had freakishly negative experiences with a particular drug and this may well deter others from trying a drug which might actually help them. Zyrtec gave me ZERO side effects.
Time taken and dosage: 1X D
Review:
2 
Allergies
by Reviewer44339
on May 11, 2010
Sex: F
Age: 5.0
Side effects: My daughter just started taking Zyrtec. Today the school called and said she was having a nervous break down. She is not the same kid. She is depressed, has anxiety, and talking about things a child her age should not even remember. I feel horrible for giving her this drug. She keeps saying mommy Im sad inside.
Time taken and dosage: 13 days5mg 1X D
Review: I called the doctor and he said to take her off of it immediately. Why do they prescribe it if there is this many problems????
2 
Allergies
by Reviewer44340
on May 9, 2010
Sex: F
Age: 34.0
Side effects: Sleepy but I couldnt stay asleep for very long. Once I woke up I felt really weird. I felt like I was gonna have a panic attack or cry. A few hours latter I was sweating a lot and I became very cold. I also felt disoriented. Later that night I became very sick and thought I might even have to go to the hospital. Its two days latter and Im still under the weather just not as sick. If I had taken any more whose to say I wouldnt have been dead.
Time taken and dosage: 1 days10 mg 1X D
Review: I only took one I didnt need another one to increase the negative side effects. I had to go to work the day I took it for the first time only to find out several people had similar side effects. Also only to find out they were still taking it but said they took it at night. This is not candy if you are experiencing these type of side effects dont play Russian roulette stop taking it. I would never recommend taking this pill there are other pills on the market or you could get allergy shots.
2 
allergies
by Reviewer44341
on May 8, 2010
Sex: F
Age: 58.0
Side effects: I became so angry over almost nothing at all. Co-workers and family noticed behavior. Would fly off handle for literally small issues. This is the second time I tried this with the same negative effects.
Time taken and dosage: 2 weeks10 mgs 1X D
Review:
2 
Seasonal allergies
by Reviewer44342
on May 8, 2010
Sex: F
Age: 30.0
Side effects: Extreme fatigue, restlessness, general anxiety, depression
Time taken and dosage: 5 days10 mg 1X D
Review: Ironic that the latest Zyrtec commercials show allergy sufferers getting ready to go golfing and bicycling after taking the drug since just one dose left me beyond exhausted within an hour. i cannot over-emphasize how tired Zyrtec makes me feel; I knew something was wrong because I never sleep during the day but I felt myself drifting off while driving, reading, watching TV and working. I could tell that if I actually let myself fall asleep, it would be the kind of deep sleep that goes on for hours but leaves you feeling groggy and disoriented upon waking. I dont know too many people who can take 12 hours out of their day to sleep! Luckily I bought the box with five pills because I will never take this drug again. I would rather sneeze 100 times per day than ever feel this low again.
4 
seasonal allergies
by Reviewer44343
on May 7, 2010
Sex: F
Age: 39.0
Side effects: extreme exhaustion, headaches, body aches, flu like symptoms. Urinary tract infection
Time taken and dosage: 2 months 1X D
Review: This medication worked great for me for the first 5 weeks. Weeks 5-8 were absolutely horrific. I thought had a horrible case of the flu. My body hurt so badly I could barely lift my arms. I could barely work all day (sitting at a desk) and have to come home and sleep for 2-3 hours just to make it to 10pm. The light bulb went came on for me when I read that a side effect is the urinary tract infection. I had an infection 3 weeks ago and had not ever had one prior in my life (39 yrs). It was such a gradual change for me that I had no idea that it was the zyrtec making me feel this way, just thought it was the allergies. 2 days off and I feel amazing again. allergies and all. Id rather deal with allergies than feeling that way ever again.
2 
Allergies
by Reviewer44344
on May 5, 2010
Sex: F
Age: 37.0
Side effects: 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.
Time taken and dosage: 1 days 1X D
Review: 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.
2 
Seasonal Allergies
by Reviewer44345
on May 4, 2010
Sex: F
Age: 24.0
Side effects: I tried samples of zyrtec when it first came out to control my really extreme seasonal allergies. After only 2 doses I became extremely moody and aggressive and immediately discontinued use. I now use raw, local honey to control my seasonal allergies and have been symptom free for two years.
Time taken and dosage: 2 days15 1X D
Review:
4 
seasonal allergies/sinus infections
by Reviewer44346
on May 3, 2010
Sex: F
Age: 19.0
Side effects: aided with allergy symptom relief, but eventually led to anxiety, depression, intense dreams/commonly waking up at night, thoughts of suicide and self harm
Time taken and dosage: 1 years5 or 10 mg 1X D
Review: I was suggested to take zyrtec daily for constant allergy symptoms I started getting from living in a large dorm in Boston. I initially noticed no side effects even though I had been told about negative symptoms from a friend that her younger brother had experienced. Only now, a year later, have I realized that some of the issues Ive faced in the last year were most likely a cause of this antihistamine. Unfortunately, it has been the only allergy medicine that has worked for me, but was definitely not worth the hell that I went through this past year. Im now faced with challenges of withdrawal as Ive only recently stopped taking it but would recommend to EVERYONE to look into the very negative side effects and how to best stop taking this pill as SOON AS POSSIBLE. thanks to everyone else who posted.
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