After 2-1/2 days, Claritin stopped being effective against allergies. What's up?

I'm sure it's tree pollen allergies, but why would it work for a few days, then completely stop working? I'm in misery!

Bigtima2007-04-10T08:55:04Z

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Claritin, never worked for me. I switch to allegra and its great. I would suggest you talkin gto you doctor.

JAN2007-04-10T08:17:53Z

Regular Claritin doesn't take care of all my symptoms either but Claritin D does. Claritin comes in 12 hour and 24 hour tablets, did you take them right? I hate the fact that people are abusing Claritin D and they make it hard for people with allergy's to get it for real medical reasons. Try Allegra D. I do not like it as well as Claritin D but it does help. You may need the decongestant as I do. I hope this helps it is no fun being so miserable.

PapayaWine2007-04-10T08:19:59Z

claritin is the kind of drug that has to build up in your system to have the full effect. Use it for a week straight and see if it working by day 7. I have found that I get varying results the first few days, but then it really starts kicking in after that

?2016-05-17T08:01:23Z

My allergies get pretty bad every year, some seasons more than others. I take Singular and it's been the best thing for me. The shot is another way to go but it's more like treatment vs a quickie. I was getting injected once a month, yuck. You can try a different med and see if it works for you. I was on Allegra (that was good but to expensive), Zyrtec (not so much), Clairtin (yuck)....I've tried them all. It just depends on your body's reaction to the meds.

chmar112007-04-10T08:15:06Z

Maybe its not allergies but a cold, flu or virus.
Or maybe you have taken claritin to long and
it is not effective for you anymore.