S.C. Code Ann. § 39-24-30: Substitution of equivalent drug product authorized; substitution of interchangeable biological product authorized.

(A) As provided in Section 39-24-40, upon receiving a prescription for a brand name product, a registered pharmacist may substitute a drug product of the same dosage form and strength which, in his professional judgment, is a therapeutically equivalent drug product.

(B) As provided in Section 39-24-40, upon receiving a prescription for a specific biological product, a registered pharmacist may substitute an interchangeable biological product.