ZYRTEC Reviews

Average Rating: 2.0 (1790 Ratings)

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 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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 1  Seasonal allergies Horrible horrible withdrawl symptom!!!!! BEWARE!!!! Took for three months with great success and no side effects BUT once the seasonal allergies were over I stopped taking Zyrtec. Day 7 with THE MOST INTENSE itching hives ALL over my body!!! NO WAY TO RELIEVE WITHOUT TAKING ZYRTEC FOR THE REST OF MY LIFE!! Google itching withdrawl from Zyrtec and you will be SHOCKED at how this can be a life altering symptom!!!!! THE LONGER YOU TAKE THE LONGER YOU WILL SUFFER WHEN STOPPING!!!! F 43 3 months
 1  My 18 month old has been on it My son has been on it for two days and is hyper at night and cries all night in his sleep and is clingy and emotional all day! I am stopping this med NOW M 1 1 days
 1  allergies stomach pain, weight gain, headaches, deterioration of vision, mood swings, digestion problems, rash, body aches, brain fog, memory loss I took zyrtec for about 2 years almost every day. I recently stopped taking it due to the realization that I didn't need allergy medicine year round and its a financial burden. I have never experienced withdrawal symptoms from a drug in my life, but on day 3 of no zyrtec I experienced hell. I had unbearable itching all over my body, from my fingertips to my scalp, to my eyelids, and the inside of my toes. You name it, it itched. The itching was so bad I made myself bleed from scratching. Then the nausea hit. I could only keep down a few bites of food and that's it. I started having blurred vision which led to vertigo. I am currently on day 5 of no zyrtec and the itching is still severe. The only thing I want to do is get zyrtec off the market. I went to the doctor to see if there was anything to do for the discomfort, and he told me to begin taking zyrtec again. No one believes that an allergy med can have withdrawal symptoms, but thank God for forums like this. I don't feel like I'm crazy anymore. This product needs to be taken off the market! F 28 2 years
10 mg 1X D
 1  allergies fatigue, body aches, severe stomach aches, headaches, extreme anger, depression My son started taking this at 26 months for 8 years. At the time, there was very little information about this drug on the internet. At every DR apt I inquired about side effects and every DR would always tell me they haven't heard of any negative long term ones. Well, if you or your child is taking this "poison" get off of it immediately. It will turn you into a devil. There is not enough time or space to describe the details, but my son would "zone" out and become extremely violent trying to harm himself and us. Fortunately, he was young and small enough for us to control. After 48 hours off this poison, he was a different person. He has been off this for 4 years and over time he hasn't had any meltdowns or anger problems. If you have a child taking this now and can't control their anger, stop giving it to them immediately. They might itch for a week or 2 but that can be controlled with Benedryl until the zyrtec is out of their system. Zyrtec should be banned. It is a horrible medicine. M 15 8 years
1X D
 1  Allergies Daily headaches, restlessness at night, heart palpitations I couldn't understand the reason for my headaches (which I never get) and heart palpitations. It finally clicked that I just haven't felt like myself since I started taking this medication. Which did NOTHING at all to help my allergies. I stopped taking it and it's been three days off of it and I'm feeling back to my old self again. I will never take that crap again! F 42 1 months
10 1X D
 2  Itchy ears,throat,runny nose,sneezi I took just under 1tsp of the children's liquid at 9:30 last night. Within five minutes of taking this, I noticed a little bit of dizziness. My arms and legs felt like lead, and I started to be extremely tired. I felt some loss of coordination as well, ended up dropping things,etc. The worst symptom was feeling anxious, and not being able to really catch my breath. I am not normally an anxious person, nor one who writes reviews, but just wanted others to be aware. I felt slightly better after 2 hours, and able to breathe a little easier, but I still feel tired and slightly uncoordinated today 17 hours into it. I have been giving this to my five year old for a while now. I hope he doesn't feel like I did! I usually only give him half a dose(1/4 tsp or 1.25 mg). It does work well against his allergies, but I will definitely be more cautious now! I didn't know anything about the emotional aspects until finding this site, so I will watch for those. As far as I am concerned, I will never take a full dose again. If I ever try it again, it will be at half the recommended dosage. Even at that, I don't know if I will ever dare try it again. It was a pretty strong reaction! I was really wanting it to work out for me too because it worked really well against the runny nose, sneezing and itchy ears and throat. F 44 1 days
5mg 1X D
 3  Seasonal Allergies, Ragweed, Polen Depression, Mood Swings. Zyrtec handled my allergy symptoms pretty well. Unfortunately I was as crazy as a loon while taking it. M 35 20 days
10 MG 1X D
 3  Sinus infection from allergies Atypical irritability M 53 10 days
10 mg
 3  Allergies Even though the package says non-drowsy it still makes me super tired, I take it at night and it helps me sleep better but when I wake up I'm still tired! I feel like no one wants to be around me and I get random bursts of dizziness. It makes my knees ache more than they usually do too. It works great for allergies but the side effects are horrible. F 15 2 weeks
 1  Allergies Anxiety, depression, rage, dark thoughts, insecurity I which I could give a negative rating for ZYRTEC. Zyrtec turned my daughter into a different child. Over the past three months she has changed from a typical 11 year old (with occasional drama but always good natured, kind and reasonable) into a girl that has intense irrational meltdowns several times a day. I am very sad to say that we initial brushed her behavior off as typical preteen drama but the intensity of her outburst made me believe that something else was going on with her. I finally made the connection this morning and began researching the side effects. I called my child's doctor and sadly they have never heard of any side effects like this from Zyrtec - wow- so scary! I encourage anyone who has had side-effects to log them here. I usually do not do this, but I am so scared for the kids that are taking this drug. If parents do not make the link between ZYRTEC and behavior these children could easily and unnecessarily get diagnosed with a mental health condition. F 11 3 months
1X D
 1  Seasonal allergies Fatigue, sudden anxiety, depression, paranoia F 33 7 days
 2  Allergies Moodiness , drowsy , weight gain F 69 1 years
 1  Seasonal allergies Tired, lack of energy, weight gain, exhaustion, spacey, jello brain, can't focus, irritable, no motivation, muscle weakness, muscle aches, headaches, nightmare F 27 2 months
1xD night
 5  sinusitis from allergies relaxes me when I take it at night Zyrtec is the only allergy medicine I have taken that actually works and does not give me bad side effects. When I take it daily it keeps my sinuses clear, and I no longer have itchy watery eyes and ears. Without Zyrtec, I cannot breathe through my nose. This medicine has greatly improved my enjoyment of life and I am so glad it does not give me any bad side effects! F 52 6 years
10mg 1X D
 3  Seasonal allergies Fatigue, lethargy, increased hunger, weight gain, feelings of nausea several hours after taking it, irregular sleep. While Zyrtec does a great job controlling my seasonal allergies it comes at a high price. I find it hard to believe that only 2% of Zyrtec users are affected by weight gain. Seems like a tons of complaints about it. I've always been a 3 meals a day person but since I started taking this I'm hungry all the time and my stomach is growling between meals. I take it around 8:00 at night so that I can sleep off the drowsy side affects, but they still linger through the next day. I've also encountered some waves of nausea 7-8 hours after taking it (and yes I take it with food). Adding Zyrtec is the only change I've made to my routine so I can't attribute these problems to anything else. F 44 3 weeks
10 mg 1X D
 1  seasonal allergies Facial tic (eye squinting/blinking) My 9-year old son developed a facial tic immediately after starting zyrtec. One eye was squinting/blinking non-stop, every few seconds all day. At first, we thought it was a coincidence...but it started again when we tried to reintroduce it. His pediatrician said it's not uncommon. M 9 4 days
7.5 mg 1X D
 1  Hayfever, season allergies I have never taken allergy medicine but this season my allergies seemed worse. I do not have any nasal congestion, but terrible itchy eyes and nose. I took this for a few days and noticed that I was irritable, very drowsy, lethargic and it did not change my hayfever symptoms at all. In fact my nose burned and my eyes itched worse than ever. I am extremely sensitive to medication of any kind. One benedryl will knock me out for a day. Everyone is different. My husband takes zyrtec with no side effects. My advice if you are someone who struggles with anxiety or tends to be very sensitive to medication, do not take this. I have been off of it for a few days and feel back to myself again. I am thankful that I realized what was causing these changes in me before I took it long enough to experience worse side effects. I would not recommend this to anyone who is similar to me in sensitivity to medicine. F 31 1 months
 1  Allergies With Zyrtec, you fall into a deep sleep that is extremely difficult to wake from, so much so that I actually almost wet the bed! Also, I have been in a bit of a mental fog for most of the time. When I am not in a fog, I am getting irritated, easily, for no real reason.... F 3 days
10 mg 1X D
 1  seasonal allergies This is actually a rating for my 2 year old daughter's experience. Her doctor recommend OTC childrens zyrtec for slight seasonal allergies. We thought she had suddenly and aggressively started with the terrible two's. She was having constant meltdowns over the tiniest things, hitting constantly, and just being downright malicious. Finally I happened to mention to my sister that my child was on Zyrtec and she told me to take her off it. Turns out my sister gets the same side effects on this drug and since then I have met many people who say that they have had the same experience. My daughter reverted back to her happy-go-lucky, joy to be around self in a matter of a few days. She will NEVER take this medication again. I have started to notice some of these side affects in myself when i started to take Zyrtec this year. I am switching to claritin or allegra. F 2 3 weeks
1 pill 1X D
 2  Allergic rhinitis The first day I took Zyrtec, I did not feel any effects, good or bad. The second day, I woke up without a sore throat, but I could barely move. I slept the day away and had muscle and joint pain, similar to the flu. I would not recommend this to anyone. F 27 2 days
10 mg