### Question
How is the term antibiotic drug defined?


### Answer
The term **antibiotic drug** is defined in *21 U.S.C. § 357* as the following:

> any drug intended for use by man containing any quantity of any chemical substance which is produced by a microorganism and which has the capacity to inhibit or destroy microorganisms in dilute solution (including the chemically synthesized equivalent of any such substance)

#### Citation:
  - *21 U.S.C. § 357*
  - Heading: **CHAPTER 8-NARCOTIC FARMS > SUBCHAPTER V-DRUGS AND DEVICES > Part A-Drugs and Devices**

