Ohio Rev. Code Ann. § 2925.55
(A) As used in sections 2925.55 to 2925.58 of the Revised Code:
(B)
(1) No individual shall knowingly purchase, receive, or otherwise acquire an amount of pseudoephedrine product or ephedrine product that is greater than either of the following unless the pseudoephedrine product or ephedrine product is dispensed by a pharmacist pursuant to a valid prescription issued by a licensed health professional authorized to prescribe drugs and the conduct of the pharmacist and the licensed health professional authorized to prescribe drugs is in accordance with Chapter 3719., 4715., 4723., 4729., 4730., 4731., or 4741. of the Revised Code:
(C)
(2) Division (C)(1) of this section does not apply to an individual under eighteen years of age who purchases, receives, or otherwise acquires a pseudoephedrine product or ephedrine product from any of the following: