CheckVegan

Is Diphenhydramine HCl vegan?

Diphenhydramine HCl

Vegan Vegan
Vegetarian Vegetarian

Diphenhydramine HCl is the hydrochloride salt of diphenhydramine, a synthetic first-generation antihistamine used for allergy relief, sedation, and in some topical anti-itch preparations.

INCI name Diphenhydramine HCl
CAS number 58-73-1
EC number 205-687-2
CosIng ID 85068
Last reviewed 9 July 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.

Report an issue