Patent ID: 8119158

Claim:
A dosage form comprising: from about 200 micrograms to about 800 micrograms of fentanyl, a salt form of fentanyl, or combinations thereof, calculated as fentanyl free base; an effervescent material 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 material; 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; wherein said dosage form is suitable for delivery of said fentanyl across the oral mucosa of a patient by buccal, gingival or sublingual administration.