Delivery of multiple doses of medications
DCFirst Claim
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1. A dosage form for the oral administration of a methylphenidate drug, comprising two groups of particles, each containing said drug, wherein:
- a) said first group of particles provides a substantially immediate dose of said drug upon ingestion by a mammal, andb) said second group of particles comprises coated particles, said coated particles comprising from about 2% to about 75% by weight of said drug in admixture with one or more binders, said coating comprising a pharmaceutically acceptable ammonio methacrylate in a quantity sufficient to provide a dose of said medication delayed by from about 2 hours to about 7 hours following said ingestion.
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Abstract
Dosage forms for oral administration of a methylphenidate drug are provided. The dosage forms provide a substantially immediate dose of methylphenidate upon ingestion, followed by one or more additional doses at predetermined times. By providing such a drug release profile, the dosage forms eliminate the need for a patient to carry an additional dose for ingestion during the day. The dosage forms and methods provided are useful in administering methylphenidate and pharmaceutically acceptable salts thereof, which generally require one or more doses throughout the day.
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Citations
30 Claims
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1. A dosage form for the oral administration of a methylphenidate drug, comprising two groups of particles, each containing said drug, wherein:
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a) said first group of particles provides a substantially immediate dose of said drug upon ingestion by a mammal, and b) said second group of particles comprises coated particles, said coated particles comprising from about 2% to about 75% by weight of said drug in admixture with one or more binders, said coating comprising a pharmaceutically acceptable ammonio methacrylate in a quantity sufficient to provide a dose of said medication delayed by from about 2 hours to about 7 hours following said ingestion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A dosage form for once-daily oral administration of a methylphenidate drug comprising:
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a) particles comprising from about 2% by weight to about 99% by weight of said methylphenidate drug, in admixture with one or more binders, b) a coating exterior to said methylphenidate drug, comprising an ammonio methacrylate copolymer in a quantity sufficient to provide a dose of said methylphenidate delayed by from about 2 hours to about 7 hours following administration, and c) on the exterior surface of said coating, a layer comprising said methylphenidate drug, to provide a substantially immediate dose of said methylphenidate upon administration. - View Dependent Claims (24, 25, 26, 30)
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27. A dosage form for the oral administration of d-threo-methylphenidate hydrochloride comprising two groups of particles, each containing d-threo-methylphenidate, wherein:
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a) said first group of particles comprises d-threo-methylphenidate hydrochloride and provides a substantially immediate dose of said d-threo methylphenidate upon ingestion by a mammal, and b) said second group of particles comprises coated particles, said coated particles comprising from about 2% to about 75% by weight of d-threo-methylphenidate hydrochloride in admixture with one or more binders, said coating comprising a pharmaceutically acceptable ammonio methacrylate copolymer in an amount sufficient to provide a dose of said d-threo-methylphenidate delayed by from about 2 hours to about 7 hours following said ingestion.
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28. A dosage form of a pharmaceutically acceptable salt of d-threo-methylphenidate providing an in vitro release profile comprising two pulses of drug release, wherein said pulses are temporally separated by from about 2 hours to about 7 hours.
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29. A dosage form of a pharmaceutically acceptable salt of d-threo-methylphenidate providing an in vivo plasma concentration of said d-threo-methylphenidate comprising two maxima, wherein said maxima are temporally separated by from about 2 hours to about 7 hours, and wherein the magnitude of said maxima differ by no more than about 30 percent.
Specification