CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER C—DRUGS: GENERAL (parts 200 to 299) > PART 201—LABELING > SUBPART D—Exemptions From Adequate Directions for Use (§201.100 to §201.129) > 201.116—Drugs having commonly known directions.