CheckVegan

Is Phentermine vegetarian?

Phentermine

Vegetarian Vegetarian
Vegan Vegan

Phentermine, sold under the brand name Adipex-P among others, is a synthetic amphetamine-derivative stimulant medication used together with diet and exercise to treat obesity.

Also known as Benzeneethanamine, alpha,alpha-dimethyl-
INCI name Phentermine
CAS number 122-09-8
EC number 204-522-1
CosIng ID 81932
Last reviewed 10 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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