Zyrtec User Reviews

Zyrtec - User Reviews

Zyrtec User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Zyrtec sorted by most helpful. Patient Discussions FAQs


Comment from: LibertyBean, 45-54 on Treatment for 6 months - 1 year (Patient) Published: April 06

I've been taking OTC Zyrtec daily for about 10 months for year-round allergy symptoms. Not only does it not work great on my itchy eyes and nose, I've gained weight, I'm tired all the time no matter how much sleep I get, I'm fatigued and have constant muscle weakness, I'm irritable, my blood pressure has gone up drastically to the point I started BP meds last week, I'm having weird dreams...it got to the point my doctor tested my thyroid function because my list of symptoms fit hypothyroidism all the way down the line. My thyroid test was normal - on the low end, actually. I started researching what else could cause my symptoms and stumbled across this forum. I won't be taking Zyrtec again and hope I feel more like the old me in a couple of days. Thanks to all of you who posted your side effects - it is such a comfort to know I'm not really losing my mind and this drug may be causing my problems!

Related Reading: allergy | hypothyroidism

Comment from: SG, 55-64 on Treatment for 1-6 months (Patient) Published: April 06

Zyrtec took pretty good care of my itchy, watery eyes, but after a short time I was having a difficult time getting to sleep--unusual for me. It would take up to 2 hours to fall asleep and I would be exhausted in the morning and irritable during the day. At night I had wild dreams like nothing I've ever had before. Finally decided one weekend to quit the Zyrtec. My normal sleep pattern came back immediately, no crazy dreams, and I've got some of my energy back. Sorry it had the adverse effects on me because it was good relief for my allergy symptoms.

Comment from: 35-44 on Treatment for 1-2 years (Patient) Published: January 30

I have numerous allergies, including an allergy to milk. I just discovered that ZYRTEC contains "lactose monohydrate" which is MILK! If you have a milk allergy or are lactose intolerant, beware!

Comment from: slmfish, 45-54 on Treatment for 10+ years (Patient) Published: May 07

I started taking this medication in 1996 for allergies and itchiness. I have tried many times to stop taking it and after 3 days develop severe itching and burning particularly on my hands, feet and scalp. I thought it was my allergies acting up and started taking it again. I have since learned that this is a form of withdrawal from this medication. I am very upset that I ever started taking it, as I don't know how I am going to quit. It is really too painful to try and stop. I am not the only one who has experience this reaction. Now that is over the counter it scares me. Beware!!

Comment from: cmestars, 35-44 on Treatment for less than 1 month (Patient) Published: April 16

I took Zyrtec because I thought I was having severe hayfever. For the past 2 days, I've taken it, I've been waking every 2 hours and having severe extreme tiredness and extreme nightmares. So bad that I made a note to check online, during 1 of the awake times. Just today, I have had 3 severe dreams that I can recall completely. I normally don't dream or recall that I dreamed, so these nightmares really stood out because of the violence, weirdness, and helplessness I felt in them. After reading several posts, I see I'm not alone when it comes to "nightmare side effects". I'm almost 39, and having bad nightmares with 1 pill per day for last 2 days. What's it doing to my son who's 17 and been using it off and on for the past year? All those times I forced him to take his meds. and even now recall he had complained about nightmares, I just didn't know it was the pills.

Related Reading: nightmares

Comment from: 19-24 on Treatment for 5-10 years (Patient) Published: September 10

I have been taking a Zyrtec every night for years. I have both outdoor seasonal allergies, as well as indoor allergies - and Zyrtec works great for both without making me drowsy! I love this product!!!

Comment from: Hugo, 25-34 Female on Treatment for 5-10 years (Patient) Published: April 25

I took Zytrec for 7 years. It worked great! No hives and no hay fever. After about 4 or 5 years I started having some very vivid and terrifying dreams and nightmares; most of these involved killing people (about 2 or 3 times a night). I was kind of stuck because none of the other medicines had done anything for my hives (Claritin and Allegra). I finally had to stop taking Zyrtec because in one dream where I was in a fight, I actually swung my arm and punched my wife in the nose. Afterwards I went online to search for these type of side effects to the drugs and read that some people were saying that Zyrtec contributed to or created nightmares and even made your allergies worse! They said that the drug made you very dependent on it. Finally after two years on the drug, I went to the doctor and changed to Claritin. Now I only take 1 Claritin once a week versus 1 Zyrtec every day and there are no nightmares! Zyrtec worked great at doing what it was supposed to do, but the side effects were not worth the cause. I also concur that Zyrtec makes your allergies worse. I took it mainly for my hives. After 26 hours of taking my medicine, I would get hives. Like clockwork. How is it now that I am able to go a week with no bad outbreaks and no nightmares? Coincidence? Be careful with Zytrec, I'm worried because it is now an over-the-counter drug.

Related Reading: hives | hay fever


Patient Comments are not a substitute for professional medical advice, diagnosis, or treatment. Never delay or disregard seeking professional medical advice from your physician or other qualified health provider because of something you have read on RxList. The opinions expressed in the comments section are of the author and the author alone. RxList does not endorse any specific product, service or treatment.

Alert If you think you have a medical emergency, call your doctor or 911 immediately.


Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


Allergies & Asthma

Improve treatments & prevent attacks.

advertisement
advertisement
Use Pill Finder Find it Now See Interactions

Pill Identifier on RxList

  • quick, easy,
    pill identification

Find a Local Pharmacy

  • including 24 hour, pharmacies

Interaction Checker

  • Check potential drug interactions
Search the Medical Dictionary for Health Definitions & Medical Abbreviations

NIH talks about Ebola on WebMD