Orally administrable opioid formulations having extended duration of effect
First Claim
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1. A bioavailable sustained-release oral analgesic dosage form for once-a-day administration, comprising:
- a unit dose comprising a plurality of pharmaceutically acceptable matrices comprising an analgesically effective amount of an opioid analgesic or a salt thereof and a hydrophobic material, each of said matrices having a diameter from about 0.1 mm to about 3 mm, said dosage form being bioavailable and providing a therapeutic effect for about 24 hours or more after oral administration to a human patient.
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Abstract
Sustained release oral solid dosage forms of opioid analgesics are provided as multiparticulate systems which are bioavailable and which provide effective blood levels of the opioid analgesic for at least about 24 hours. A unit dose of the opioid analgesic contains a plurality of substrates including the opioid analgesic in sustained release form. The substrates have a diameter from about 0.1 mm to about 3 mm.
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Citations
52 Claims
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1. A bioavailable sustained-release oral analgesic dosage form for once-a-day administration, comprising:
a unit dose comprising a plurality of pharmaceutically acceptable matrices comprising an analgesically effective amount of an opioid analgesic or a salt thereof and a hydrophobic material, each of said matrices having a diameter from about 0.1 mm to about 3 mm, said dosage form being bioavailable and providing a therapeutic effect for about 24 hours or more after oral administration to a human patient. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 12, 14, 15, 17, 18, 19, 20, 39, 43, 44)
- 3. A method for preparing a bioavailable sustained-release opioid analgesic dosage form for once-a-day oral administration, comprising preparing a unit dose comprising a plurality of inert beads coated with an opioid analgesic or a salt thereof and a sustained-release coating comprising a hydrophobic material, such that each of said beads has a diameter from about 0.1 to about 3 mm and such that said dosage form provides an in-vitro dissolution indicative of a once-a-day oral dosage form, is bioavailable, and provides a therapeutic effect for about 24 hours or more after oral administration to a human patient.
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11. A bioavailable sustained-release dosage form for once-a-day oral administration of morphine, comprising
a unit dose of inert pharmaceutically acceptable beads having a diameter from about 0.1 mm to about 3 mm coated with an analgesically effective amount of morphine or a salt thereof, said beads further comprising a sustained-release overcoat comprising an effective amount of a hydrophobic material selected from an acrylic polymer, an alkyl cellulose, and mixtures thereof, said unit dose being bioavailable and providing a therapeutic effect for about 24 hours or more after oral administration.
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21. A bioavailable sustained-release opioid analgesic dosage form for once-a-day oral administration, consisting essentially of
a unit dose of inert pharmaceutically acceptable beads coated with an analgesically effective amount of an opioid analgesic or a salt thereof, said beads further comprising a sustained-release overcoat comprising an effective amount of a hydrophobic material selected from the group consisting of an acrylic polymer, an alkylcellulose, shellac, zein, hydrogenated vegetable oil, hydrogenated castor oil, and mixtures of any of the foregoing, and said coated beads having a diameter from about 0.1 mm to about 3 mm, said dosage form being bioavailable and providing a therapeutic effect for about 24 hours or more after oral administration to a human patient.
- 33. A method of treating a patient for moderate to severe pain with a bioavailable sustained-release opioid analgesic dosage form for once-a-day oral administration, comprising orally administering to a patient on a once-a-day basis a unit dose of an oral opioid analgesic consisting essentially of a plurality of inert pharmaceutically acceptable beads coated with an analgesically effective amount of an opioid analgesic or a salt thereof and overcoated with a hydrophobic material, such that each of said heads has a diameter from about 0.1 mm to about 3 mm, said unit dose being bioavailable and manufactured in a sustained-release form to provide therapeutically effective blood plasma levels of said opioid analgesic for about 24 hours or more.
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46. A bioavailable sustained-release opioid analgesic dosage form for once-a-day oral administration, comprising
inert pharmaceutically acceptable beads having a diameter from about 0.1 mm to about 3 mm coated with an analgesically effective amount of an opioid analgesic or a salt thereof, said beads further comprising a sustained-release overcoat comprising an effective amount of a hydrophobic material in an amount sufficient to provide a sustained-release of said opioid analgesic such that said dosage form provides a therepeutic effect for about 24 hours or more after oral administration to a human patient.
Specification