This post was written by Paul Sheives. FDA seeks comments on the design of a study entitled “Experimental Study: Effect of Promotional Offers in Direct-to-Consumer (DTC) Prescription Drug Print Advertisements on Consumer Product Perceptions.” The study intends to assess the effect that promotional offers (e.g., free trial offers, discounts, money-back guarantees, rebates, sweepstakes) in DTC prescription drug ads have on consumer’s (1) perception of product risks and benefits, (2) comprehension of product risks and benefits, and (3) strongly-held beliefs that may act as potential moderators. FDA is accepting written comments on the study design until November 22, 2010.