Oil and liquid silicone foamable carriers and formulations
First Claim
1. A waterless foamable pharmaceutical composition, comprising a foamable carrier and at least one liquefied or compressed gas propellant, wherein the foamable carrier comprises:
- a) about 60% to about 95% by weight of the foamable carrier of at least one liquid oil selected from the group comprising a mineral oil, a MCT oil, a liquid paraffin, a vegetable oil, an essential oil, an organic oil, a lipid, or a mixture of two or more thereof comprising about 60-90% mineral oil;
b) about 0.5% to about 15% by weight of the foamable carrier of a silicone; and
c) about 0.01% to about 25% by weight of the foamable carrier of at least one foam stabilizing agent comprising glyceryl monostearate;
wherein the foamable carrier is a single phase;
wherein the foam stabilizing agent optionally comprises at least one foam adjuvant;
wherein the silicone is selected from the group consisting of a siloxane compound having 4-6 Si—
O groups in its backbone, a cyclomethicone, a cyclotetrasiloxane, a cyclopentasiloxane, a cyclohexasiloxane, a phenyl trimethicone, a stearyl dimethicone, a cetyl dimethicone, a caprylyl methicone, a PEG/PPG 18/18 dimethicone, a dimethiconol, and a mixture of any two or more thereof;
wherein the composition is essentially free of water;
wherein the ratio of the foamable carrier to the propellant is 100;
3 to 100;
35;
wherein the resultant foam does not collapse immediately upon release and is breakable on mechanical shear;
wherein the waterless foamable pharmaceutical composition comprises a minocycline or a doxycycline or both; and
wherein the minocycline or the doxycycline is stable for at least 3 weeks at 25°
C. in the waterless foamable pharmaceutical composition.
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Accused Products
Abstract
A waterless foamable pharmaceutical composition suitable for external administration is disclosed. The composition includes a foamable carrier least one liquefied or compressed gas propellant. The foamable carrier includes at least one liquid oil; at least one silicone and at least one least one stabilizing agent; wherein the stabilizing agent selected from the group consisting of about 0.01% to about 25% by weight of at least one surface-active agent alone or on combination with a foam adjuvant; and about 0% to about 5% by weight of at least one polymeric agent alone or on combination with a foam adjuvant; and mixtures thereof. Pharmaceutical compositions comprising active agents, methods for their preparation, propellants suitable for use with the carriers and uses thereof are further described.
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Citations
23 Claims
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1. A waterless foamable pharmaceutical composition, comprising a foamable carrier and at least one liquefied or compressed gas propellant, wherein the foamable carrier comprises:
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a) about 60% to about 95% by weight of the foamable carrier of at least one liquid oil selected from the group comprising a mineral oil, a MCT oil, a liquid paraffin, a vegetable oil, an essential oil, an organic oil, a lipid, or a mixture of two or more thereof comprising about 60-90% mineral oil; b) about 0.5% to about 15% by weight of the foamable carrier of a silicone; and c) about 0.01% to about 25% by weight of the foamable carrier of at least one foam stabilizing agent comprising glyceryl monostearate; wherein the foamable carrier is a single phase; wherein the foam stabilizing agent optionally comprises at least one foam adjuvant; wherein the silicone is selected from the group consisting of a siloxane compound having 4-6 Si—
O groups in its backbone, a cyclomethicone, a cyclotetrasiloxane, a cyclopentasiloxane, a cyclohexasiloxane, a phenyl trimethicone, a stearyl dimethicone, a cetyl dimethicone, a caprylyl methicone, a PEG/PPG 18/18 dimethicone, a dimethiconol, and a mixture of any two or more thereof;wherein the composition is essentially free of water; wherein the ratio of the foamable carrier to the propellant is 100;
3 to 100;
35;wherein the resultant foam does not collapse immediately upon release and is breakable on mechanical shear; wherein the waterless foamable pharmaceutical composition comprises a minocycline or a doxycycline or both; and wherein the minocycline or the doxycycline is stable for at least 3 weeks at 25°
C. in the waterless foamable pharmaceutical composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification