Wafer formulation
First Claim
1. An orally administrable wafer comprising at least about 30 to about 80 wt % pullulan, PEG in an amount of less than about 5 wt % and a pharmaceutical agent selected from the group consisting of morphine, heroin, hydromorphone, metophon, oxymorphone, levorphanol, codeine, hydrocodone, oxycodone, nalorphine, naloxone, naltrexone and fentanyl, wherein the wafer is prepared by dissolving the film forming agent in an aqueous solution to form a gel that is treated with a plurality of heating and cooling cycles for a total time period of no more than about 3 minutes and the wafer exhibits a dissolution rate of at least about 2 milligrams/sec in an aqueous environment and a Tmax of no more than about 10 minutes.
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Accused Products
Abstract
An orally administrable wafer is provided comprising at least one physiologically acceptable film forming agent. The wafer is formed by mixing the film-forming agent with an aqueous solution to form a gel and exposing the gel to a plurality of heating and cooling cycles. The wafer is rapidly dissolving and suitable for administration of pharmaceutical agents.
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Citations
13 Claims
- 1. An orally administrable wafer comprising at least about 30 to about 80 wt % pullulan, PEG in an amount of less than about 5 wt % and a pharmaceutical agent selected from the group consisting of morphine, heroin, hydromorphone, metophon, oxymorphone, levorphanol, codeine, hydrocodone, oxycodone, nalorphine, naloxone, naltrexone and fentanyl, wherein the wafer is prepared by dissolving the film forming agent in an aqueous solution to form a gel that is treated with a plurality of heating and cooling cycles for a total time period of no more than about 3 minutes and the wafer exhibits a dissolution rate of at least about 2 milligrams/sec in an aqueous environment and a Tmax of no more than about 10 minutes.
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6. A method of preparing an orally administrable wafer comprising at least about 30 to about 80 wt % pullulan, PEG in an amount of less than about 5 wt % and a pharmaceutical agent selected from the group consisting of morphine, heroin, hydromorphone, metophon, oxymorphone, levorphanol, codeine, hydrocodone, xycodone, nalorphine, naloxone, naltrexone and fentanyl, wherein the wafer exhibits a dissolution rate of at least about 2 milligrams/sec in an aqueous environment and a Tmax of no more than about 10 minutes, the method comprising the steps of:
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1) mixing the pullulan and PEG with an aqueous solution to form a gel, and mixing the pharmaceutical agent with the gel; and 2) exposing the gel to a plurality of cycles, each cycle comprising heating and cooling, to transform the gel into a wafer, wherein the total time period of the cycles is no more than about 3 minutes. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification