A pharmacy may honor an original manufacturer’s discount coupon presented by a patient for the purchase of a controlled substance, including a pseudoephedrine-containing product. A pharmacy may not discount a controlled substance upon presentation of a copy of a manufacturer’s discount coupon for the product. A pharmacy may not offer or honor a discount coupon published or provided by the pharmacy or the pharmacy’s corporation. A pharmacy may accept and honor only an original manufacturer’s discount coupon. Additional information is available here (pdf file).