### Question
Can you define what valid prescription means?


### Answer
**Valid prescription** is defined as the following in *21 CFR § 1300.02*:

> a prescription that is issued for a legitimate medical purpose by an individual practitioner licensed by law to administer and prescribe the drugs concerned and acting in the usual course of the practitioner's professional practice.

#### Citation:
  - *21 CFR § 1300.02*
  - Heading: **Title 21-Food and Drugs > PART 1300—DEFINITIONS**

