Zyrtec and mood swings

I have been on Zyrtec for three years (Every day) haven't noticed mood swings in myself? My mother also takes them every other day and is not particularly moody. Although she has trouble sleeping which she attributes to the menopause But if i don't take one within 24hrs I get very itchy and hive up..now that I'm breastfeeding I've just noticed my daughter is very irritable..and am beginning to think it's related to the zyrtec. I'm changing to claratyne in the morning to see if there's a change..very,very interesting and scary reading all the side-effects!!

I was taking Zyrtec every day for the last 3-4 weeks. It is the best OTC medication for my mild, but annoying allergies. I stopped taking it yesterday for the first time and had the worst migraine with nausea and vomiting that I've ever experienced in my life. I didn't take it again today. I'm feeling a migraine coming on, and would rather take the Zytec than go through that experience again.

My daughter who just turn 7 has been on and off Zyrtec for the past 6 months. This last time it finally clicked... She was on it for about 3-4 weeks and I notice her mood changed and she was now very angry at anything and started hitting her sibblings and throwing things at me out of anger. She also was waking up at night either with bad dreams, or couldn't sleep. My husband and I realized that this all started about the time we put her back on Zyrtec. Two days ago, I took her off it and the next day she was an "Angel" compared to before. WOW what a difference. I did notice today (day two) she was sneezing more and didn't feel as well physically. So we are not out woods yet.

She also has been taking Singular for several years and I have been reading more about that medicine as well. I am not sure if needs to be taken off that yet, and will do an experiment. The timing isn't the best since school starts in just two weeks, but it might be worth it to have a happy child again.

On a side note, last year in school, they diagnosed her as having social anxiety. She is "extremely" shy and closed off in school. It would take her hours to do her homework which should have taken about 30 min. I am curious if stopping singular would help clear her head and make her less anxious. (She was on Zyrtec as well during that time).

This would be such an answer to prayer if it works. My two sons are so much happier than my daughter and I always wondered why. This may be the answer!

I love the fact that Zyrtec works wonders for my allergies, but not how it makes me feel. It effects everyone differently that is for sure.
I have been severe with my mood swings and soooooo tired even if I have taken it at night. I can't recall any weight gain over the past year because I have been on a diet. I have had the heart flutters, nausea and dizziness. The worst I can say though is the aggressive behavior, very easy to snap and crazy thoughts. This is not good when you are a stay at home mom with a 3 year old and 1 year old. I have recently taken myself off of it and feel happier and so do my kids. If you or someone you know has to take it please take notice if any of these side effect occur and switch meds. It affects not only you, but the ones you love around you.
I would rather sneeze.
As for withdrawals; I get severe headaches, sleeplessness, and itchy.

I think the hardest part - for me - was even to concieve the idea that Zyrtec has all of these side effects.

I've been taking Zyrtec on a daily basis for about 90- 110 days a year due to really bad allergies. We live in the NY area which produce alergans most of the year.

After trying almost every antihistamine, Zyrtec seemed at the time as the best drug since it handled the allergy while eliminating the drowsiness almost completely for me. Being happy that I was able to maintain normal life during allergy periods was almost a new concept for me and I was really grateful for finding this drug.

Unfortunately, being almost blinded by the allergy-fighting success, I neglected the attention to the side effects. I guess I'm falling into the unlucky 2%. I had almost every side effect: Irritation, mood swings, gaining weight, dry mouth - just name it.

Recently, my wife did some research because we got to the point where I would fight with her over anything. I can testify that my tolerance level hit the ground. Anyway, she got my attention for her research results which turned a red flag for me. In addition, this year my body seemed to not respond anymore to the drug and doing my own little research revealed that it is very likely that you need to rotate different drugs every few months.

So I decided to get off Zyrtec and switched to Benadryl Allergy which I take every 4-6 hours. Yes, it does make me drowsy for about 15-20 minutes but it works. What's more interesting is, I've been about 10 days off Zyrtec and I am shocked to realize that I'm slowly getting rid of all the side effects associated with Zyrtec.

That being said, I would like to emphasize that this was my own individual experience and it may not be the same for someone else. But it is pretty disappointing for me that i cannot use this drug anymore on a regular basis.

Is any one having menstrual problems? I have had a lot of cramping and little to no flow-which is unusual for me-I feel like I am constantly PMS-ing
and I want to eat all the time! The allergy problem is gone but my ovaries
are killing me and Im gaining weight!

my 3 1/2 year old son has had problems with focusing, hyperactivity at times, decreased concentration and inability to complete tasks. He has trouble falling asleep at night. Had him evaluated for this. Pediatrician suggested that it could be the zyrtec, since symptoms started about a year ago. MD stated that 2 other mother's started their child on Singular and then stopped the Zyrtec and saw an improvement in child's concentration. Will see