I have been taking Claritin D 24 hour tables for quite a few years now. I usually purchase them in packs of 10 tablets for use all year round.
I suffer from pretty bad allergies all year round. I used to get allergy shots, but became immune tot hem after many years. I was then forced to find an alternative to the shots. The Claritin worked great for me for a long time, but I think I have become immune to the drug now.
I buy Claritin D because of the decongestant that is in the drug. It help to some degree with my stuffy nose. I also like that it lasts for 24 hours.
I do not experience any side affects from the drug, which is a very good thing.
If you suffer mild allergies or seasonal allergies Claritin might be of some help to you. If you have serious allergies, such as I do, you might require a different solution.