346.3—Definitions.
As used in this part:
(a) Analgesic, anesthetic drug.
A topically (externally) applied drug that relieves pain by depressing cutaneous sensory receptors.
(b) Anorectal drug.
A drug that is used to relieve symptoms caused by anorectal disorders in the anal canal, perianal area, and/or the lower rectal areas.
(c) Antipruritic drug.
A topically (externally) applied drug that relieves itching by depressing cutaneous sensory receptors.
(d) Astringent drug.
A drug that is applied topically (externally) to the skin or mucous membranes for a local and limited protein coagulant effect.
(e) External use.
Topical application of an anorectal drug product to the skin of the perianal area and/or the skin of the anal canal.
(f) Intrarectal use.
Topical application of an anorectal drug product to the mucous membrane of the rectum.
(g) Keratolytic drug.
A drug that causes desquamation (loosening) and debridement or sloughing of the surface cells of the epidermis.
(h) Local anesthetic drug.
A drug that produces local disappearance of pain, burning, itching, irritation, and/or discomfort by reversibly blocking nerve conduction when applied to nerve tissue in appropriate concentrations.
(i) Protectant drug.
A drug that provides a physical barrier, forming a protective coating over skin or mucous membranes.