Generic name: Diphenhydramine
Ben-Tann is used to treat hay fever and other allergic conditions of upper respiratory tract symptoms, including cold, watery or itchy eyes, sneezing, runny nose, nose and throat itching, and cough. It may also be used by your physician to treat certain other conditions.
It refers to anticholinergics and antihistamines. The medicine blocks the histamine action, thus, reducing allergic symptoms. It makes the brain to produce sedative effect.