Method of treating pain by administering 24 hour oral opioid formulations exhibiting rapid rate of initial rise of plasma drug level
First Claim
1. An oral sustained release opioid formulation comprising:
- an opioid analgesic, an effective amount of at least one retardant material to cause said opioid analgesic to be released at an effective rate to provide an analgesic effect after oral administration to a human patient for at least about 24 hours, said formulation when administered in humans providing an initially rapid rate of rise in the plasma concentration of said opioid characterized by providing an absorption half-life from 1 to about 8 hours in the fasted state.
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Abstract
Patients are treated with 24-hour oral sustained release opioid formulations which, upon administration, provide an initially rapid opioid absorption such that the minimum effective analgesic concentration of the opioid is more quickly achieved. These sustained release opioid formulations include an effective amount of at least one retardant material to cause said opioid analgesic to be released at a such a rate as to provide an analgesic effect after oral administration to a human patient for at least about 24 hours, and are characterized by providing an absorption half-life from 1 to about 8 hours. A method of titrating a human patient utilizing these sustained release opioid formulations is also disclosed.
75 Citations
26 Claims
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1. An oral sustained release opioid formulation comprising:
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an opioid analgesic, an effective amount of at least one retardant material to cause said opioid analgesic to be released at an effective rate to provide an analgesic effect after oral administration to a human patient for at least about 24 hours, said formulation when administered in humans providing an initially rapid rate of rise in the plasma concentration of said opioid characterized by providing an absorption half-life from 1 to about 8 hours in the fasted state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for titrating human patients with a sustained release oral opioid formulation, comprising:
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(1) administering to a human patient on a once-a-day basis a unit dose of an oral sustained release formulation comprising a dose of an opioid analgesic and an effective amount of at least one retardant material to cause said opioid to be released at an effective rate to provide an analgesic effect after oral administration to a human patient for at least about 24 hours, said formulation when administered in humans providing an initially rapid rate of rise in the plasma concentration of said opioid characterized by providing an absorption half-life from 1 to about 8 hours in the fasted state;
(2) monitoring pharmacokinetic and pharmacodynamic parameters elicited by said formulation in said human patient and determining whether said pharmacokinetic and/or pharmacodynamic parameters are appropriate to treat said patient on a repeated basis;
(3) titrating the patient by adjusting the dose of said opioid analgesic administered to the patient by administering a unit dose of said sustained release opioid analgesic formulation containing a different amount of opioid analgesic if it is determined that said pharmacokinetic and/or said pharmacodynamic parameters are not satisfactory or maintaining the dose of said opioid analgesic in said unit dose at a previously administered amount if said pharmacokinetic and/or pharmacodynamic parameters are deemed appropriate;
(4) continuing the step (3) titration by adjusting the dose of said opioid analgesic until appropriate steady-state pharmacokinetic/pharmacodynamic parameters are achieved in said patient; and
(5) continuing the administration of the dose of said opioid analgesic in said oral sustained release formulation on a once-a-day basis until treatment is terminated. - View Dependent Claims (21, 22)
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20. A method for preparing a oral sustained release opioid formulation for once-a-day administration which includes a dose of an opioid analgesic and an effective amount of at least one retardant material to cause said opioid to be released at an effective rate to provide an analgesic effect after oral administration to a human patient for at least about 24 hours, characterized in that said formulation is prepared to provide an initially rapid rate of rise in the plasma concentration of said opioid characterized by providing an absorption half-life from 1 to about 8 hours when administered to a patient in the fasted state.
- 23. A method of treating a patient with a bioavailable sustained-release opioid analgesic dosage form for once-a-day oral administration, comprising preparing a plurality of substrates comprising a unit dose of an opioid analgesic, each of said substrates having a diameter from about 0.1 mm to about 3 mm, said substrates being manufactured in a sustained release form to provide therapeutically effective blood levels of said opioid analgesic for about 24 hours or more, and administering said unit dose to a patient to alleviate moderate to severe pain for about 24 hours or more.
Specification