California Code, Penal Code - PEN § 337g

The possession, transport or use of any local anaesthetic of the cocaine group, including but not limited to natural or synthetic drugs of this group, such as allocaine, apothesine, alypine, benzyl carbinol, butyn, procaine, nupercaine, beta-eucaine, novol or anestubes, within the racing inclosure is prohibited, except upon a bona fide veterinarian's prescription with complete statement of uses and purposes of same on the container. A copy of such prescription shall be filed with the stewards, and such substances may be used only with approval of the stewards and under the supervision of the veterinarian representing the board.