Diphenhydramine injection is in a class of medications called antihistamines. It works by blocking the action of histamine, a substance in the body that causes allergic symptoms.

Ketorolac is used for the short-term treatment of moderate to severe pain in adults. Reducing pain helps you recover more comfortably so that you can return to your normal daily activities.

This medication is a nonsteroidal anti-inflammatory drug (NSAID). It works by blocking your body's production of certain natural substances that cause inflammation. This effect helps to decrease swelling, pain, or fever.