Phenergan is used in cases of shock and allergic reactions. It can also be used as an additional treatment to relieve cancer pain or what may accompany surgery, and to treat allergy symptoms such as itching, runny nose, sneezing, itchy eyes and watery eyes.
Phenergan also treats itchy skin in addition to its role in preventing motion sickness and treating nausea and vomiting after surgery. It can be used as an aid to relieve pain or improve sleep.