as well as other formulations such as nasal sprays or eye drops. Examples of common antihistamines include Claritin (loratadine) and Benadryl (diphenhydramine), over-the-counter (OTC) medications ...

nasal sprays or eye drops. They work quickly and are most effective if taken as needed, such as on days when your symptoms are particularly bad. Getty Images Some antihistamines, like Claritin-D ...