Patent ID: 8647667

Claim:
A solid oral controlled-release dosage form comprising a matrix comprising an analgesically effective amount of hydrocodone or a pharmaceutically acceptable salt thereof and an amount of a controlled release material sufficient to render the dosage form suitable for once-a-day administration and such that the dosage form provides an in-vitro release rate of hydrocodone or a pharmaceutically acceptable salt thereof, when measured by the USP Basket Method at 100 rpm in 900 ml aqueous buffer at a pH of between 1.6 and 7.2 at 37° C., of from 0% to about 35% at 1 hour, from about 10% to about 70% at 4 hours, from about 20% to about 75% at 8 hours, from about 30% to about 80% at 12 hours, from about 40% to about 90% at 18 hours, and greater than about 60% at 24 hours, and a C 24 /C max ratio of about 0.55 to about 1 when administered to an individual patient or a patient population at steady-state, wherein said hydrocodone or pharmaceutically acceptable salt thereof is the only active agent in the dosage form.