May 15, 2019 WebMD explains types of antihistamines and their use for allergies. of different types of allergies, including seasonal (hay fever), indoor, and food allergies. (Chlor-Trimeton); Clemastine (Tavist); Diphenhydramine (Benadryl); Fexofenadine (Allegra); Loratadine (Alavert, Claritin)...