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www.fdanews.com/articles/130574-fda-to-study-impact-of-price-incentives-in-dtc-ads

FDA to Study Impact of Price Incentives in DTC Ads

September 27, 2010
The FDA plans to study whether coupons offering purchase incentives, such as money-back guarantees, in direct to consumer (DTC) print ads affect consumers’ perceptions of the risks and benefits of a product. Price incentives may mislead consumers who may use the incentives as signals about product quality, the FDA says in a notice published in the Federal Register.
Washington Drug Letter