28 Pa. Code § 109.64
If patients bring their own drugs to the hospital, these drugs shall not be administered unless the attending practitioner has written an order for their administration. If the drugs are not to be used, they shall be packaged, sealed, and returned to the patient for removal from the hospital. If such removal is not feasible, the drugs shall be stored and returned to the patient at the time of discharge. The patient shall be cautioned concerning outdated or distressed drugs. Controlled substances as listed in the schedule of controlled substances pursuant to section 4 of the act of April 14, 1972 (P. L. 233, No. 64) (35 P. S. § 780-104) known as The Controlled Substances, Drug Device and Cosmetic Act shall not be returned to the patient without approval of the attending practitioner.
28 Pa. Code § 109.64