What is phenegan?

Phenergan is a brand name for promethazine, an antihistamine used to treat allergy symptoms, motion sickness, and nausea. It works by blocking histamine receptors in the body, providing relief from various allergic reactions. Additionally, it is sometimes used as a sedative or to enhance the effectiveness of other medications. However, it can cause drowsiness and has potential side effects, so it should be used as directed by a healthcare professional.