Method of preventing abuse of opioid dosage forms
First Claim
1. A method of reducing the abuse potential of an oral dosage form of an opioid analgesic, comprisingcombining an analgesically effective amount of an orally active opioid agonist together with an opioid antagonist into an oral dosage form, said opioid agonist/antagonist combination being chosen such that the opioid agonist and opioid antagonist are only extractable from the dosage form together, and at least a two-step extraction process is required to separate the opioid antagonist from the opioid agonist, the amount of opioid antagonist including being sufficient to counteract opioid effects if extracted together from the oral dosage form together with the opioid agonist and administered parenterally, wherein the dose of said antagonist causes the opioid agonist/antagonist combination to provide an aversive effect in a physically dependent human subject when the dosage form is orally administered.
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Abstract
The invention relates in part to a method of reducing the abuse potential of an oral dosage form of an opioid analgesic, wherein an analgesically effective amount of an orally active opioid agonist is combined with an opioid antagonist into an oral dosage form which would require at least a two-step extraction process to be separated from the opioid agonist, the amount of opioid antagonist including being sufficient to counteract opioid effects if extracted together with the opioid agonist and administered parenterally.
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Citations
34 Claims
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1. A method of reducing the abuse potential of an oral dosage form of an opioid analgesic, comprising
combining an analgesically effective amount of an orally active opioid agonist together with an opioid antagonist into an oral dosage form, said opioid agonist/antagonist combination being chosen such that the opioid agonist and opioid antagonist are only extractable from the dosage form together, and at least a two-step extraction process is required to separate the opioid antagonist from the opioid agonist, the amount of opioid antagonist including being sufficient to counteract opioid effects if extracted together from the oral dosage form together with the opioid agonist and administered parenterally, wherein the dose of said antagonist causes the opioid agonist/antagonist combination to provide an aversive effect in a physically dependent human subject when the dosage form is orally administered.
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11. A method of reducing the abuse potential of an oral dosage form of an opioid analgesic, comprising
combining into an oral dosage form (i) an analgesically effective amount of an opioid agonist selected from the group consisting of hydrocodone, hydromorphone, oxycodone, morphine, codeine, levorphanol, meperidine, methadone, and salts thereof together with (ii) an opioid antagonist or a pharmaceutically acceptable salt thereof, said opioid agonist/antagonist combination being chosen such that the opioid agonist and opioid antagonist are only extractable from the dosage form together, and at least a two-step extraction process is required to separate the opioid antagonist from the opioid agonist, the amount of opioid antagonist including being sufficient to counteract opioid effects if extracted together from the oral dosage form together with the opioid agonist and administered parenterally.
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30. A method of reducing the abuse potential of an oral dosage form of an opioid analgesic, comprising
identifying an (i) opioid agonist selected from the group consisting of hydrocodone, hydromorphone, oxycodone, morphine, codeine, levorphanol, meperidine, methadone, or pharmaceutically acceptable salt thereof and (ii) an opioid antagonist or pharmaceutically acceptable salt thereof which when combined together in a solid dosage form along with pharmaceutical excipients are only extractable from the dosage form together, such that at least a two-step extraction process is required to separate the opioid antagonist from the opioid agonist; - and
preparing an oral solid dosage form comprising an analgesically effective amount of said opioid agonist, said opioid antagonist, and one or more pharmaceutical excipients, said opioid antagonist being included in an amount sufficient to counteract the analgesic effect of said opioid if extracted together with the opioid agonist and administered parenterally. - View Dependent Claims (31, 32, 33, 34)
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Specification