What does National Formulary mean in medical term?

National Formulary means: Established in 1820 by the United States Pharmacopeia USP it contains legal standards for identity, strength and purity of drug substances and dosage forms.
(in Medical Dictionary)

What else does National Formulary mean?

The USP-NF Monographs include specifications, tests and procedures that help ensure strength, purity, and quality of the named items. Monographs as well as general methods to guarantee the quality of compounded products are also included in USP-NF. The USP-NF Monographs are internationally recognized and may be enforced by the US Food and Drug Administration FDA and other state agencies.
(in Medical Dictionary)

National Formulary is the full name of United States Pharmacopeia or National Formulary USAP-NF. The official publication that provides information about the drug composition and its dosage, first published by the American Pharmaceutical Association, then yearly by United States Pharmacopeial Convention. Two separate compendia are included in the book: the USP (and the NF).
(in Medical Dictionary)

American Pharmaceutical Association established the National Formulary NF in 1888. It includes specifications for botanicals and excipients. The USP bought the NF in 1975 and combined the two publications into one, creating the USPNF.
(in Medical Dictionary)