### Question
How is the "drug" defined?


### Answer
The term **drug** is defined in *21 U.S.C. § 321* as follows -

> (A) articles recognized in the official United States Pharmacopoeia,[1](#321_1_target) official Homoeopathic Pharmacopoeia of the United States, or official National Formulary, or any supplement to any of them

#### Citation:
  - *21 U.S.C. § 321*
  - Heading: **CHAPTER 9-FEDERAL FOOD, DRUG, AND COSMETIC ACT > SUBCHAPTER II-DEFINITIONS**

