Okla. Stat. tit. 63, § 63-2-510: Defenses - Descriptions

A. An exemption or exception set forth in this act shall

constitute an affirmative defense. Such affirmative defense shall

be in accordance with the presentation of an alibi defense

prescribed in Section 585 of Title 22 of the Oklahoma Statutes.

B. In any prosecution for a violation of any of the provisions

of this act relating to a controlled dangerous substance named in

any of the schedules set out in the act, it shall be sufficient in

any indictment or information to allege a general description of the

controlled dangerous substance and the schedule wherein listed

without other specific description. Upon a trial under such

indictment or information, it shall be sufficient to prove that the

controlled dangerous substance is one listed within a particular

schedule without further identification.