A drug used to destroy or prevent the growth of infectious microorganisms on or in the human or animal body, that is, on living tissue. The legal definition is stated in the Federal Food, Drug, and Cosmetic Act, Chap. II, Sect. 201, Para. (o) as follows: “The representation of a drug, in its labeling, as an antiseptic shall be considered to be a representation that it is a germicide, except in the case of a drug purporting to be, or represented as, an antiseptic for inhibitory use as a wet dressing, ointment, dusting powder, or such other use as involves prolonged contact with the body.” This means that antiseptics will render microorganisms innocuous, by either killing them or preventing their growth, according to the character of the preparation or the method of application.