[Amended 2-11-1991 by Ord. No. 183; 7-22-2002]
A person shall not knowingly or intentionally possess marijuana (cannabis sativa L.), lysergic acid diethylamide, peyote, mescaline, dimethyltryptamine, psilocyn, psilocybin, or any controlled substances classified in Schedule 5 of Act Number 368 of 1978, as amended, unless the controlled substance was obtained directly from, or pursuant to, a valid prescription order of a practitioner (as defined in the Public Health Code) while acting in the course of the practitioner's professional practice, or except as otherwise authorized by the Public Health Code.