21 CFR § 346.10
Local anesthetic active ingredients
June 25, 2020
The active ingredient of the product consists of any of the following when used in the concentration or within the concentration range established for each ingredient:
(a) Benzocaine 5 to 20 percent.
(b) Benzyl alcohol 1 to 4 percent.
(c) Dibucaine 0.25 to 1 percent.
(d) Dibucaine hydrochloride 0.25 to 1 percent.
(e) Dyclonine hydrochloride 0.5 to 1 percent.
(f) Lidocaine 2 to 5 percent.
(g) Pramoxine hydrochloride 1 percent.
(h) Tetracaine 0.5 to 1 percent.
(i) Tetracaine hydrochloride 0.5 to 1 percent.