Why is Promethazine hydrochloride prescribed?
Phenergan is an antihistamine that relieves nasal stuffiness and inflammation and red, inflamed eyes caused by hay fever and other allergies. It is also used to treat itching, swelling, and redness from hives and other rashes; allergic reactions to blood transfusions; and, with other medications, anaphylactic shock (severe allergic reaction). Phenergan is also used as a sedative and sleep aid for both children and adults, and is prescribed to prevent and control nausea and vomiting before and after surgery and to prevent and treat motion sickness. It is also used, with other medications, for pain after surgery. Antihistamines work by decreasing the effects of histamine, a chemical the body releases in response to certain irritants. Histamine narrows air passages in the lungs and contributes to inflammation. Antihistamines reduce itching and swelling and dry up secretions from the nose, eyes, and throat.
