RESTRICTION ON SELECTION OF AND CHARGING FOR GENERICALLY EQUIVALENT DRUG OR INTERCHANGEABLE BIOLOGICAL PRODUCT.
Tex. OCC Code § 562.011.
in effect(a) A pharmacist may not select a generically equivalent drug or interchangeable biological product unless the generically equivalent drug or interchangeable biological product selected costs the patient less than the prescribed drug or biological product.
(b) A pharmacist may not charge for dispensing a generically equivalent drug or interchangeable biological product a professional fee higher than the fee the pharmacist customarily charges for dispensing the brand name drug or biological product prescribed.