Patent ID: 7858121

Claim:
A dosage form comprising: about 1000 micrograms of fentanyl, calculated as fentanyl free base or an equivalent amount of a salt thereof, an effervescent couple in an amount of about 15% to no more than about 60% by weight of the dosage form, a pH adjusting substance in an amount of about 0.5 to about 25% by weight of the dosage form, wherein said pH adjusting substance is not a component of said effervescent couple, mannitol in an amount of between about 10 and about 80% by weight of the dosage form; a starch glycolate in an amount of about 0.25 to about 20% by weight of the dosage form, said dosage form being suitable for delivery of said fentanyl across the oral mucosa of a patient by buccal, gingival or sublingual administration.