U.S. flag An official website of the United States government
  1. Home
  2. Regulatory Information
  3. Search for FDA Guidance Documents
  4. CPG Sec. 400.600 Drugs - Declaration of Quantity of Active Ingredient by Both Metric and Apothecary Systems
  1. Search for FDA Guidance Documents

COMPLIANCE POLICY GUIDE (CPG)

CPG Sec. 400.600 Drugs - Declaration of Quantity of Active Ingredient by Both Metric and Apothecary Systems October 1980

Final
Issued by:
Guidance Issuing Office
Center for Drug Evaluation and Research

BACKGROUND:

The USP and NF allow the simultaneous use of both the metric and apothecary systems to declare the quantity of active ingredients present in drug product labeling. Prior to USP XX and NF XV, the official compendia allowed the approximate equivalent of the exact quantity to be enclosed in parenthesis; such as Quinidine Sulfate 200 mg. (3 grains).

On July 1, 1980 the USP XX and NF XV became official and requires that "Where expressed in both the metric and apothecary systems, statements of quantity or strength in the labeling of drug products shall utilize the exact equivalent." (See inside back cover USP XX and NF XV). Therefore the above example would now have to be modified to read Quinidine Sulfate 200 mg (3.086 grains).

POLICY:

USP and NF products shipped after 7/1/80 bearing a dual declaration will be considered misbranded if the exact equivalents are not used. However, as a general rule we are not prepared to initiate regulatory action of this violation alone. It may be included as a 502(g) charge only when other violations exist or it may serve as the basis for a Notice of Adverse Findings letter.

Issued: 10/1/80


Submit Comments

Submit comments on this guidance document electronically via docket ID: FDA-2013-S-0610 - Specific Electronic Submissions Intended For FDA's Dockets Management Staff (i.e., Citizen Petitions, Draft Proposed Guidance Documents, Variances, and other administrative record submissions)

If unable to submit comments online, please mail written comments to:

Dockets Management
Food and Drug Administration
5630 Fishers Lane, Rm 1061
Rockville, MD 20852

All comments should be identified with the title of the guidance.

Back to Top