Allergic reactions: IV Benadryl can be used to treat allergy symptoms. It works by blocking the action of histamine, which is a chemical released by the body in response to an allergen. Also, histamine is thought to play a role in migraine headaches, and some people find that antihistamines like Benadryl can help relieve their migraine symptoms.
Nausea and vomiting: IV Benadryl can be used to treat nausea and vomiting caused by a variety of conditions, including motion sickness and chemotherapy-induced nausea and vomiting.
Insomnia: IV Benadryl can be used to treat insomnia, as it can have a sedative effect and make it easier to fall asleep.
Itching: IV Benadryl can be used to treat itching caused by a variety of conditions, such as eczema, insect bites, and allergic reactions.