Which is the best allergy medication that is over the counter?

Several choices: Current over the counter allergy medications that work well for most people with mild allergies are Claritin (loratadine), zyrtec (cetirizine) and Allegra (fexofenadine). One may work better than the other for a particular person, so it is not unreasonable to try more than one. Older antihistamines (benadryl) work, but are associated with more side effects, especially drowsiness.