Missouri 195.110

User of controlled substance to keep it in container in which obtained

A person to whom or for whose use any controlled substance in Schedule II has been prescribed, sold, or dispensed by a physician, dentist, podiatrist, or pharmacist, or other person authorized under the provisions of section 195.050 and the owner of any animal for which any such drug has been prescribed, sold, or dispensed, by a veterinarian, may lawfully possess it only in the container in which it was delivered to him by the person selling or dispensing the same.

(RSMo 1939 § 9842, A.L. 1971 H.B. 69, A.L. 1997 H.B. 635)