Phenergan is used to relieve allergies such as skin rashes, itching and symptoms of hayfever. It can also be used to treat sickness, vertigo (loss of balance or dizziness), travel sickness and problems affecting the ear. It is also occasionally used to treat insomnia (difficulty sleeping).
Periactin is used in the treatment of allergies and some other conditions.
Allegra is an antihistamine that comes in a variety of strengths and formulations to provide non-drowsy relief from a wide range of seasonal allergy symptoms such as sneezing, runny nose, itchy throat, or itchy, watery eyes. It is also used to treat hives and skin itching.
Zyrtec is a quick-acting antihistamine used in the treatment of allergies, hay fever, angioedema, and urticaria. It provides effective, 24-hour relief of indoor and outdoor allergy symptoms, lasting up to 24 hours.