Wyo. Stat. § 33-24-131
The provisions of this act shall not apply to the sale at wholesale or sale by any method at retail of economic poisons, medical and dental supplies, cosmetics, dietary foods, or nonnarcotic, nonprescription, prepackaged medicinal preparations contained in distinctive and original unbroken containers, when such medicinal preparations are identified by and sold under a trade name of the manufacturer or primary distributor thereof and are sold or offered for sale to the general public, if such articles meet the requirements of state and federal food, drug and cosmetic laws; provided however, that notwithstanding the above, any drug, medicinal preparation, or substance for use by man which is determined by the state board of pharmacy, after notice to the manufacturer or primary distributor thereof, and opportunity to be heard pursuant to the provisions of the Wyoming Administrative Procedure Act, as having a depressant or stimulant effect on the central nervous system or its hallucinogenic effect, or as habit forming, or as a drug or product which, because of its toxicity or other potentiality for harmful effect, or method of use, or the collateral measures necessary for such use is not safe for use except under the supervision of a practitioner licensed by law to prescribe such substances, may be designated by rule as a dangerous drug which shall be restricted to sale on prescription of a practitioner licensed by law to prescribe such substances.
W.S. 33-24-131