Controlled release formulation
DCFirst Claim
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1. A process for the preparation of a solid, controlled release oral dosage form, comprising incorporating a therapeutically effective amount of tramadol or a pharmaceutically acceptable salt thereof in a controlled release matrix such that said dosage form provides a therapeutic effect for at least about 12 hours after oral administration.
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Abstract
A controlled release preparation for oral administration contains tramadol, or a pharmaceutically acceptable salt thereof, as active ingredient.
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Citations
46 Claims
- 1. A process for the preparation of a solid, controlled release oral dosage form, comprising incorporating a therapeutically effective amount of tramadol or a pharmaceutically acceptable salt thereof in a controlled release matrix such that said dosage form provides a therapeutic effect for at least about 12 hours after oral administration.
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28. A process for the preparation of a solid, controlled release oral dosage form of tramadol, comprising incorporating a therapeutically effective amount of tramadol or a pharmaceutically acceptable salt thereof in a matrix comprising an effective amount of a controlled release material selected from the group consisting of hydrophilic polymers, hydrophobic polymers, fatty acids, fatty alcohols, glycerol esters of fatty acids, mineral oil, vegetable oils, waxes, polyalkylene glycols, and mixtures thereof, such that said dosage form has a dissolution rate (measured by the Ph. Eur. Paddle method at 100 rpm in 900 ml 0.1 N hydrochloric acid at 37°
- C. and using UV detection at 270 nm of between 0-50% after 1 hour;
between 0-75% after 2 hours;
between 3-95% after 4 hours;
between 0-100% after 8 hours;
between 20-100% after 12 hours;
between 30-100% after 16 hours;
between 50-100% after 24 hours; and
greater than 80% after 36 hours;
said dosage form providing a therapeutic effect for at least about 12 hours after administration. - View Dependent Claims (29, 30, 31, 32, 33)
- C. and using UV detection at 270 nm of between 0-50% after 1 hour;
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34. A process for the preparation of a solid, controlled release oral dosage form of tramadol suitable for dosing every 24 hours, comprising incorporation a therapeutically effective amount of tramadol or a pharmaceutically acceptable salt thereof in a matrix comprising an effective amount of a controlled release material comprising (a) between 1% and 80% by weight hydrophilic polymers, hydrophobic polymers, or mixtures thereof;
- (b) from 0-60% by weight digestible C8-C50 substituted or unsubstituted hydrocarbons selected from the group consisting of fatty acids, fatty alcohols, glycerol esters of fatty acids, mineral oils, vegetable oils, waxes, and mixtures thereof; and
(c) from 0-60% by weight polyalkylene glycol, such that said dosage form has a dissolution rate (measured by Ph. Eur. Paddle method at 100 rpm in 900 ml 0.1 N hydrochloric acid at 37°
C. and using UV detection at 270 nm), of between 0 and 50% tramadol released after 1 hour;
between 0 and 75% tramadol released after 2 hours;
between 3 and 95% tramadol released after 4 hours;
between 10 and 100% tramadol released after 8 hours;
between 20 and 100% tramadol released after 12 hours;
between 30 and 100% tramadol released after 16 hours;
between 50 and 1005 tramadol released after 24 hours; and
greater than 805 tramadol released after 36 hours, by weight, and provides a W50 in the range of 10 to 33 hours and a therapeutic effect for about 24 hours when orally administered to human patients. - View Dependent Claims (35, 36, 38)
- (b) from 0-60% by weight digestible C8-C50 substituted or unsubstituted hydrocarbons selected from the group consisting of fatty acids, fatty alcohols, glycerol esters of fatty acids, mineral oils, vegetable oils, waxes, and mixtures thereof; and
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37. A process for preparation of a solid, controlled release oral dosage form, comprising incorporating a therapeutically effective amount of an opioid analgesic consisting essentially of tramadol or a pharmaceutically acceptable salt thereof in a controlled release matrix such that said dosage form provides a therapeutic effect for at least about 12 hours after oral administration.
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39. A process for the preparation of a solid, controlled release oral dosage form of tramadol suitable for dosing every 12 hours, comprising incorporation a therapeutically effective amount of tramadol or a pharmaceutically acceptable salt thereof in a matrix comprising an effective amount of a controlled release material comprising (a) between 1% and 80% by weight hydrophilic polymers, hydrophobic polymers, or mixtures thereof;
- (b) from 0-60% by weight digestible C8-C50 substituted or unsubstituted hydrocarbons selected from the group consisting of fatty acids, fatty alcohols, glycerol esters of fatty acids, mineral oils, vegetable oils, waxes, and mixtures thereof; and
(c) from 0-60% by weight polyalkylene glycol, such that said preparation contains up to 60% by weight of said polyalkylene glycol;
such that said dosage form has a dissolution rate (measured by the Ph. Eur. Paddle method at 100 rpm in 900 ml 0.1 N hydrochloric acid at 37°
C. and using UV detection at 270 nm), of between 0 and 50% tramadol released after 1 hour;
between 0 and 75% tramadol released after 2 hours, between 3 and 95% tramadol released after 4 hours;
between 10 and 100% tramadol released after 8 hours;
between 20 and 100% tramadol released after 12 hours;
between 30 and 100% tramadol released after 16 hours;
between 50 and 100% tramadol released after 24 hours; and
greater than 80% tramadol released after 36 hours, by weight, and provides a Tmax from about 1.5 to about 8 hours and a therapeutic effect for at least about 12 hours when orally administered to human patients. - View Dependent Claims (40)
- (b) from 0-60% by weight digestible C8-C50 substituted or unsubstituted hydrocarbons selected from the group consisting of fatty acids, fatty alcohols, glycerol esters of fatty acids, mineral oils, vegetable oils, waxes, and mixtures thereof; and
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41. A process for the preparation of a solid, controlled release oral dosage form, comprising incorporation from about 50 to about 800 mg tramadol or a pharmaceutically acceptable salt thereof in a controlled release matrix to obtain a granular product containing said tramadol;
- and incorporating said granular product into an orally administrable dosage form such that said dosage form provides a dissolution rate (measured by the Ph. Eur. Paddle method at 100 rpm in 900 ml 0.1 N hydrochloric acid at 37°
C. and using UV detection at 270 nm of between 0-50% after 1 hour;
between 0-75% after 2 hours;
between 3-95% after 4 hours;
between 10-100% after 8 hours;
between 20-100% after 12 hours;
between 30-100% after 16 hours;
between 50-100% after 24 hours; and
greater than 80% after 36 hours and provides a therapeutic effect for at least about 12 hours after oral administration. - View Dependent Claims (42, 43, 44, 45, 46)
- and incorporating said granular product into an orally administrable dosage form such that said dosage form provides a dissolution rate (measured by the Ph. Eur. Paddle method at 100 rpm in 900 ml 0.1 N hydrochloric acid at 37°
Specification