Erowid Diphenhydramine (Benadryl, DPH) Vault

diphenhydramine

Modern humans must learn how to relate to psychoactives
responsibly, treating them with respect and awareness,
working to minimize harms and maximize benefits, and
integrating use into a healthy, enjoyable, and productive life.

Diphenhydramine

COMMON & BRAND NAMES

Benadryl; Benylin; Nytol; Sominex; DPH

EFFECTS CLASSIFICATION

Antihistamine; Sedative; Antiemetic; Antivertigo; Antitussive; Topical Anaesthetic

CHEMICAL NAME

2-(diphenylmethoxy)-N,N-dimethylethylamine

DESCRIPTION

Diphenhydramine (DPH) is an antihistamine with anticholinergic and sedative effects. It is found in both OTC and prescription drugs used in the treatment of allergy-related symptoms, some cold and flu symptoms, insomnia, motion sickness and Parkinson's disease.

CAUTION

Many oral diphenhydramine preparations contain analgesics such as acetaminophen/paracetamol or aspirin, which can be toxic to the liver in high doses.