Rx Adherence Claims For Ribasphere RibaPak Sent Packing

FDA tells Kadmon Pharmaceuticals that it can’t promote convenience advantages, however factual, as clinical benefits without adequate and well-controlled studies.

Pharmaceutical companies need to be cautious about using convenience advantages in promotional material, a recent Office of Prescription Drug Promotion warning letter indicates. Inferring that such characteristics, even if true on their own, may improve patient outcomes, requires substantial evidence or substantial clinical experience to support the claim, FDA said.

FDA told Kadmon Corp. LLC that the intro letter for its hepatitis C drug Ribasphere RibaPak (ribavirin)...

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