 BioDelivery Sciences International, Inc. BDSI has developed BEMA BioErodible MucoAdhesive fentanyl, an alternative product to OTFC that does not require the subject to continuously paint the inside of the mouth with the dosage form. The BDSI product is a small disc that is placed against the mucosal membrane inside the mouth. The mucoadhesive polymers in the disc readily adhere to the mucosal membrane within 5 seconds when moistened. The components of the disc are water soluble, so the entire dosage form dissolves within 30 minutes of application. 