Methylphenidate extended release chewable tablet
DC CAFCFirst Claim
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1. A racemic methylphenidate chewable tablet, wherein the chewable tablet is a uniform solid dispersion comprising:
- (a) a water-insoluble, water-permeable, pH-independent barrier coated, racemic methylphenidate—
cation exchange resin complex in an optional matrix, wherein the barrier coating comprises a water-insoluble barrier coating polymer and a plasticizer, which barrier coating is present in an amount of about 10% w/w to about 70% w/w % based on the weight of the precoated racemic methylphenidate—
cation exchange resin complex—
optional matrix, wherein the barrier coating is over the precoated racemic methylphenidate—
cation exchange resin complex—
optional matrix and provides a sustained release profile to the racemic methylphenidate in (a), and wherein when present the matrix comprises the racemic methylphenidate—
cation exchange resin complex and further comprises a water-insoluble polymer or copolymer or a water-soluble polymer or copolymer; and
(b) at least one immediate release racemic methylphenidate component which releases racemic methylphenidate in (b) in less than about 30 minutes as determined in an in vitro dissolution assay;
wherein about 50% w/w to about 90% w/w of the racemic methylphenidate in the tablet is provided by (a);
wherein said chewable tablet is capable of being divided and providing tablet portions which retain the release profile for the racemic methylphenidate in the undivided tablet following oral dosing.
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Abstract
An oral methylphenidate extended release tablet is described, which can be scored and still retain its extended release profile. The tablet contains a combination of an uncoated methylphenidate—ion exchange resin complex, a barrier coated methylphenidate—ion exchange resin complex—matrix, and an uncomplexed methylphenidate active component. Following administration of a single dose of the extended release methylphenidate chewable tablet, a therapeutically effective amount of methylphenidate is reached in less than about 20 minutes and the composition provides a twelve-hour extended release profile.
164 Citations
30 Claims
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1. A racemic methylphenidate chewable tablet, wherein the chewable tablet is a uniform solid dispersion comprising:
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(a) a water-insoluble, water-permeable, pH-independent barrier coated, racemic methylphenidate—
cation exchange resin complex in an optional matrix, wherein the barrier coating comprises a water-insoluble barrier coating polymer and a plasticizer, which barrier coating is present in an amount of about 10% w/w to about 70% w/w % based on the weight of the precoated racemic methylphenidate—
cation exchange resin complex—
optional matrix, wherein the barrier coating is over the precoated racemic methylphenidate—
cation exchange resin complex—
optional matrix and provides a sustained release profile to the racemic methylphenidate in (a), and wherein when present the matrix comprises the racemic methylphenidate—
cation exchange resin complex and further comprises a water-insoluble polymer or copolymer or a water-soluble polymer or copolymer; and(b) at least one immediate release racemic methylphenidate component which releases racemic methylphenidate in (b) in less than about 30 minutes as determined in an in vitro dissolution assay; wherein about 50% w/w to about 90% w/w of the racemic methylphenidate in the tablet is provided by (a); wherein said chewable tablet is capable of being divided and providing tablet portions which retain the release profile for the racemic methylphenidate in the undivided tablet following oral dosing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 29, 30)
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21. A racemic methylphenidate chewable tablet, wherein the chewable tablet is a uniform solid dispersion comprising:
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(a) a water-insoluble, water-permeable, pH-independent barrier coated, racemic methylphenidate—
cation exchange resin complex in an optional matrix, wherein the barrier coating comprises a water-insoluble barrier coating polymer and a plasticizer, which barrier coating is present in an amount of about 10% w/w to about 70% w/w % based on the weight of the precoated racemic methylphenidate—
cation exchange resin complex—
optional matrix, wherein the barrier coating is over the precoated racemic methylphenidate—
cation exchange resin complex—
optional matrix and provides a sustained release profile to the racemic methylphenidate in (a), and wherein when present the matrix comprises the racemic methylphenidate—
cation exchange resin complex and further comprises a water-insoluble polymer or copolymer or a water-soluble polymer or copolymer;(b) a first immediate release component which comprises an immediate release uncoated racemic methylphenidate—
ion exchange resin complex, wherein about 5% w/w to about 20% w/w of the total racemic methylphenidate in the tablet is provided by (b); and(c) a second immediate release racemic methylphenidate component which comprises an uncomplexed racemic methylphenidate, wherein about 5% w/w to about 20% w/w of the total racemic methylphenidate in the tablet is provided by (c); wherein said chewable tablet is capable of being divided and providing tablet portions which retain the release profile for the racemic methylphenidate in the undivided tablet following oral dosing. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification