Ohio Revised Code Title XXXVII. Health Safety Morals § 3719.15

(A) Where a licensed health professional authorized to prescribe drugs administers or personally furnishes, or where a pharmacist sells at retail, any medicinal preparation that contains in thirty milliliters, or if a solid or semisolid preparation, in thirty grams, of any of the following:

(B) Where a licensed health professional authorized to prescribe drugs administers or personally furnishes, or where a pharmacist sells at retail, liniments, ointments, and other preparations, that are susceptible of external use only and that contain narcotic drugs in a combination that prevents the drugs from being readily extracted from the liniments, ointments, or preparations, except that this chapter and Chapter 2925. of the Revised Code shall apply to all liniments, ointments, and other preparations that contain coca leaves in any quantity or combination.

The medicinal preparation, or the liniment, ointment, or other preparation susceptible of external use only, prescribed, personally furnished, administered, dispensed, or sold, shall contain, in addition to the narcotic drug in it, some drug or drugs conferring upon it medicinal qualities other than those possessed by the narcotic drug alone. The preparation shall be prescribed, personally furnished, administered, compounded, dispensed, and sold in good faith as a medicine, and not for the purpose of evading this chapter or Chapter 2925. of the Revised Code.