MULTIPARTICULATE OSMOTIC DELIVERY SYSTEM
First Claim
Patent Images
1. A pharmaceutical composition, comprising:
- at least one microparticle comprising at least one core which is at least partially coated with at least one osmotic subcoat, and at least one outer coat which at least partially coats the at least one osmotic subcoat,whereinsaid at least one core comprises at least one drug, and at least one excipient, andsaid at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle.
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Abstract
The present invention relates to a multiparticulate osmotic delivery system. The system is a modified release composition suitable for oral administration. The composition includes a core that includes at least one drug in combination with at least one pharmaceutically acceptable excipient. The composition further includes an osmotic subcoat surrounding the core, and a modified release overcoat surrounding the osmotic subcoated core.
226 Citations
147 Claims
-
1. A pharmaceutical composition, comprising:
-
at least one microparticle comprising at least one core which is at least partially coated with at least one osmotic subcoat, and at least one outer coat which at least partially coats the at least one osmotic subcoat, wherein said at least one core comprises at least one drug, and at least one excipient, and said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle. - 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, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 146, 147)
wherein there is increased release of the at least one drug from the composition within 24 hours of placing the composition into a first external environment of use compared to an otherwise identical or similar second composition comprising the at least one drug but not containing an osmotic subcoat placed into a second external environment of use, wherein the first external environment of use and the second external environment of use are identical or similar, and wherein each external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37°
C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
-
-
47. The composition of claim 1, wherein at least thirty parts of water is used to dissolve one part of the drug, and wherein ≧
- 90% of the drug is released from the composition within 24 hours of placing the composition into an external environment of use,
wherein the external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37°
C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- 90% of the drug is released from the composition within 24 hours of placing the composition into an external environment of use,
-
48. The composition of claim 1, wherein at least thirty parts of water is required to dissolve one part of the drug, wherein there is increased release of the at least one drug from the composition within 24 hours of placing the composition into a first external environment of use compared to an otherwise identical or similar composition comprising the at least one drug but not containing an osmotic subcoat placed into a second external environment of use,
wherein the first external environment of use and the second external environment of use are identical or similar, and, wherein each external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37° - C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- C.+/−
-
49. The composition of claim 1, wherein the at least one core comprises from about 0.1% by weight to about 99.9% by weight of the at least one excipient and from about 0.1% by weight to about 99.9% by weight of the at least one drug.
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50. The composition of claim 1, wherein the at least one osmotic subcoat comprises from about 1% by weight to about 99% by weight of the at least one osmotic deposition vehicle and from about 1% by weight to about 99% by weight of the at least one osmotic agent.
-
51. The composition of claim 1, wherein the weight of the least one outer coat is equal to from about 1% to about 99% of the weight of the at least one core.
-
52. The composition of claim 49, wherein the total weight of the at least one core is the weight of the at least one drug plus the weight of the at least one excipient.
-
53. The composition of claim 50, wherein the total weight of the at least one osmotic subcoat is the weight of the at least one osmotic agent plus the weight of the at least one osmotic deposition vehicle.
-
54. The composition of claim 1, wherein the at least one core comprises 97.5% by weight of the at least one excipient and 2.5% by weight of the at least one drug, and wherein the total % by weight of the at least one drug and the at least one excipient is 100% of the weight total of the at least one core.
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55. The composition of claim 54, wherein the at least one drug is pramipexole and wherein the at least one excipient is glyceryl monostearate.
-
56. The composition of claim 1, wherein the at least one core comprises 40% by weight of the at least one excipient and 60% by weight of the at least one drug and wherein the total % by weight of the at least one drug and the at least one excipient is 100% of the weight total of the at least one core.
-
57. The composition of claim 56, wherein the at least one drug is diltiazem and wherein the at least one excipient is glyceryl monostearate.
-
58. The composition of claim 1, wherein the at least one core comprises 90% by weight of the at least one excipient and 10% by weight of the at least one drug and wherein the total % by weight of the at least one drug and the at least one excipient is 100% of the weight total of the at least one core.
-
59. The composition of claim 58, wherein the at least one drug is rivastigmine and the at least one excipient is glyceryl monostearate.
-
60. The composition of claim 1, wherein the at least one excipient is selected from the group consisting of a spheronization aid, a solubility enhancer, a disintegrating agent, a diluent, a lubricant, a binder, a filler, a suspending agent, an emulsifying agent, an anti-foaming agent, a falvouring agent, a colouring agent, a chemical stabilizer, a pH modifier, a swelling agent, and mixtures thereof.
-
61. The composition of claim 60, wherein the at least one excipient comprises a spheronization aid, and wherein the spheronization aid is selected from the group consisting of a distilled monoglyceride, a hydrogenated oil, a fatty acid salt, a polyol, a polyoxyethylene ether, an esterified polyoxyethylene, a wax, a wax like material, a thermo-plastic polymer, a thermo-softening polymer, and combinations thereof.
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62. The composition of claim 61, wherein the spheronization aid is selected from the group consisting of glyceryl monostearate, glyceryl behenate, glyceryl dibehenate, glyceryl palmitostearate, hydrogenated castor oil, magnesium stearate, calcium stearate, mannitol, sorbitol, xylitol, stearic acid, palmitic acid, sodium lauryl sulfate, PEG-32 distearate, PEG-150 distearate, cetostearyl alcohol, carnauba wax, white wax, paraffin wax, povidone, a cellulose ether, a polyvinylalcohol, and combinations thereof.
-
63. The composition of claim 62, wherein the spheronization aid comprises glyceryl monostearate.
-
64. The composition of claim 62, wherein the spheronization aid comprises glyceryl behenate.
-
65. The composition of claim 62, wherein the spheronization aid comprises glyceryl palmitostearate.
-
66. The composition of claim 60, wherein the at least one excipient comprises a filler, and wherein the filler is selected from the group consisting of calcium phosphate dibasic, tricalcium phosphate, calcium carbonate, a starch, a modified starch, microcrystalline cellulose, sucrose, dextrose, a maltodextrin, lactose, fructose, and combinations thereof.
-
67. The composition of claim 66, wherein the filler comprises microcrystalline cellulose.
-
68. The composition of claim 66, wherein the filler comprises lactose.
-
69. The composition of claim 60, wherein the at least one excipient comprises a solubility enhancer, and wherein the solubility enhancer is selected from the group consisting of a macrogol fatty acid ester, a polyethylene glycol, a polyethylene-polypropylene glycol, sorbitol, a propylene glycol, a pentaerythritol, and mixtures thereof.
-
70. The composition of claim 69, wherein the at least one excipient comprises at least one polyethylene-polypropylene glycol, and wherein the average molecular weight of the polyethylene-propylene glycol ranges from 9,480-14,600.
-
71. The composition of claim 69, wherein the at least one excipient comprises at least one polyethylene glycol, and wherein the average molecular weight of the polyethylene glycol ranges from 3,000-4,800.
-
72. The composition of claim 69, wherein the at least one excipient comprises at least one macrogel fatty acid ester, wherein the melting point of the macrogel fatty acid ester ranges from 40°
- C. to 60°
C., and wherein the hydrophilic-lipophilic balance value of the macrogel fatty acid ester is 13.
- C. to 60°
-
73. The composition of claim 60, wherein the at least one excipient comprises a binder, and wherein the binder is selected from the group consisting of polyethylene glycol, stearic acid, a low melting point wax, and mixtures thereof.
-
74. The composition of claim 1, wherein the at least one osmotic agent is selected from the group consisting of sodium chloride, sodium bromide, sodium bisulfate, potassium acid tartrate, citric acid, sodium citrate, fumaric acid, mannitol, sucrose, and mixtures thereof.
-
75. The composition of claim 74, wherein the at least one osmotic agent comprises sodium chloride.
-
76. The composition of claim 74, wherein the at least one osmotic agent comprises sodium citrate.
-
77. The composition of claim 74, wherein the at least one osmotic agent comprises fumaric acid.
-
78. The composition of claim 74, wherein the at least one osmotic agent comprises mannitol.
-
79. The composition of claim 1, wherein said at least one osmotic deposition vehicle is selected from the group consisting of a polyvinyl pyrrolidone, a hydroxyethyl cellulose, a hydroxypropyl cellulose, a low molecular weight hydroxypropyl methylcellulose (HPMC), a polymethacrylate, an ethyl cellulose and mixtures thereof.
-
80. The composition of claim 79, wherein the at least one osmotic deposition vehicle comprises a low molecular weight hydroxypropyl methylcellulose (HPMC).
-
81. The composition of claim 79, wherein the at least one osmotic deposition vehicle comprises hypromellose substitution type 2910 with a nominal viscosity of 6 cP.
-
82. The composition of claim 79, wherein the at least one osmotic deposition vehicle comprises hypromellose substitution type 2906 with a nominal viscosity of 3 cP.
-
83. The composition of claim 79, wherein the at least one osmotic deposition vehicle comprises polyvinylpyrrolidone with a molecular weight of 30,000.
-
84. The composition of claim 1, wherein said at least one microparticle is partially coated with the at least one outer coat.
-
85. The composition of claim 1, wherein the at least one core is partially coated with the at least one osmotic subcoat.
-
86. The composition of claim 1, wherein the at least one outer coat comprises at least one polymer, polymeric material, or polymeric dispersion.
-
87. The composition of claim 86, wherein the at least one polymer, polymeric material, or polymeric dispersion is selected from the group consisting of a poly (meth)acrylate neutral copolymer aqueous dispersion, a (meth)acrylate neutral copolymer, a polyvinyl acetate aqueous dispersion, a polyvinyl acetate, an ethylcellulose, an ethylcellulose aqueous dispersion, a dispersion of a poly(ethyl acrylate and methyl acrylate), a poly(ethyl acrylate and methyl acrylate) and combinations thereof.
-
88. The composition of claim 87, wherein the at least one polymer, polymeric material, or polymeric dispersion comprises a poly(meth)acrylate neutral copolymer.
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89. The composition of claim 87, wherein the at least one polymer, polymeric material, or polymeric dispersion comprises a polyvinyl acetate.
-
90. The composition of claim 87, wherein the at least one polymer, polymeric material, or polymeric dispersion comprises an ethylcellulose.
-
91. The composition of claim 87, wherein the at least one polymer, polymeric material, or polymeric dispersion comprises a poly(ethyl acrylate and methyl acrylate).
-
92. The composition of claim 1, wherein the at least one outer coat comprises at least one glidant.
-
93. The composition of claim 92, wherein the at least one glidant is selected from the group consisting of talc, magnesium stearate, calcium silicate, glyceryl monostearate, and combinations thereof.
-
94. The composition of claim 93, wherein the at least one glidant comprises talc.
-
95. The composition of claim 93, wherein the at least one glidant comprises glyceryl monostearate.
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96. The composition of claim 93, wherein the at least one glidant comprises calcium silicate.
-
97. The composition of claim 93, wherein the at least one glidant comprises glyceryl monostearate.
-
98. The composition of claim 1, wherein the at least one outer coat comprises at least one emulsifier.
-
99. The composition of claim 98, wherein the at least one emulsifier comprises polyoxethylene sorbitan monooleate.
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100. The composition of claim 1, wherein the outer coat comprises at least one anti-foaming agent.
-
101. The composition of claim 100, wherein the at least one anti-foaming agent comprises simethicone.
-
102. The composition of claim 1, wherein the outer coat comprises at least one plasticizer.
-
103. The composition of claim 102, wherein the plasticizer is selected from the group consisting of acetyltributyl citrate, triacetin, dibutyl sebacate, and mixtures thereof.
-
104. The composition of claim 103, wherein the plasticizer comprises acetyltributyl citrate.
-
105. The composition of claim 103, wherein the plasticizer comprises triacetin.
-
106. The composition of claim 103, wherein the plasticizer comprises dibutyl sebacate.
-
107. The composition of claim 1, wherein the outer coat does not comprise a pore former.
-
108. The composition of claim 1, wherein the at least one drug is present in a positive amount of ≦
- 20 mg, wherein ≧
90% of the drug is released from the composition within 24 hours of placing the composition into an external environment of use, wherein the at least one outer coat does not comprise a pore former,wherein the external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37°
C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- 20 mg, wherein ≧
-
109. The composition of claim 1, wherein the at least one outer coat does not comprise a pore former, wherein the at least one drug is present in a positive amount of ≦
- 20 mg, wherein there is increased release of the at least one drug from the composition within 24 hours of placing the composition into a first external environment of use compared to an otherwise identical or similar second composition comprising the at least one drug but not containing an osmotic subcoat placed into a second external environment of use,
wherein the first external environment of use and the second external environment of use are identical or similar, and wherein each external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37°
C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- 20 mg, wherein there is increased release of the at least one drug from the composition within 24 hours of placing the composition into a first external environment of use compared to an otherwise identical or similar second composition comprising the at least one drug but not containing an osmotic subcoat placed into a second external environment of use,
-
110. The composition of claim 1, wherein at least 30 parts of water is required to dissolve one part of the drug, wherein ≧
- 90% of the drug is released from the composition within 24 hours of placing the composition into an external environment of use, wherein the at least one outer coat does not comprise a pore former, and
wherein the external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37°
C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- 90% of the drug is released from the composition within 24 hours of placing the composition into an external environment of use, wherein the at least one outer coat does not comprise a pore former, and
-
111. The composition of claim 1, wherein at least 30 parts of water is required to dissolve one part of the drug, wherein the at least one outer coat does not comprise a pore former, wherein there is increased release of the at least one drug from the composition within 24 hours of placing the composition into a first external environment of use compared to an otherwise identical or similar second composition comprising the at least one drug but not containing an osmotic subcoat placed into a second external environment of use,
wherein the first external environment of use and the second external environment of use are identical or similar, and wherein each external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37° - C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- C.+/−
-
112. The composition of claim 1, wherein the at least one outer coat comprises a pore former.
-
113. The composition of claim 112, wherein the pore former comprises at least one material selected from the group consisting of hypromellose substitution type 2910 having a viscosity ranging from 5 cP to 7 cP, hypromellose substitution type 2906 having a viscosity ranging from 2 cP to 4 cP, a polyvinylpyrrolidione having a molecular weight ranging from 20,000 to 40,000, and mixtures thereof.
-
114. The composition of claim 1, wherein the at least one outer coat comprises at least one drug, and wherein the at least one drug of the at least one outer coat may be the same or different from the drug in the core.
-
115. The composition of claim 1, wherein the composition is an extended release composition.
-
116. The composition of claim 1, wherein the composition is a delayed release composition.
-
117. The composition of claim 116, wherein the composition, when placed into an external environment of use, provides a drug release profile wherein a predetermined lag time is substantially independent of the pH of the external environment of use,
wherein the external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37° - C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- C.+/−
-
118. The composition of claim 1, wherein the composition is a sustained release composition.
-
119. The composition of claim 1, wherein the composition, when placed into an external environment of use, provides a drug release profile that does not include a lag time,
wherein the external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37° - C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- C.+/−
-
120. The composition of claim 1, wherein the at least one outer coat does not comprise a seal coat.
-
121. The composition of claim 1, wherein the at least one osmotic agent and the at least one osmotic deposition vehicle are present in the at least one osmotic subcoat in amounts sufficient to achieve an osmotic pressure gradient across the at least one outer coat for the transport of a solvent or aqueous fluid from an external environment of use into said core, and transport of said drug from said core to said external environment of use,
wherein the external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37° - C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- C.+/−
-
122. The composition of claim 121, wherein the release of the drug from the core to the external environment of use is effected by both the osmotic pressure gradient and passive diffusion.
-
123. The composition of claim 1, wherein the at least one osmotic deposition vehicle does not effect the rate and/or extent of release of the at least one drug.
-
146. The composition of claim 1, wherein the drug is present in an amount of more than about 200 mg, and wherein ≧
- 90% of the drug is released from the composition within 24 hours of placing the composition into an external environment of use,
wherein the external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37°
C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere.
- 90% of the drug is released from the composition within 24 hours of placing the composition into an external environment of use,
-
147. The composition of claim 146,
wherein the at least one drug is diltiazem, wherein the volume of the dissolution medium is 900 ml, wherein the dissolution medium is stirred at 100 rotations per minute, and wherein the dissolution medium is water.
-
124. A method of administering at least one drug, the method comprising:
-
administering to a subject in need thereof a pharmaceutical composition, comprising; at least one microparticle comprising at least one core which is at least partially coated with at least one osmotic subcoat, and at least one outer coat which at least partially coats the at least one osmotic subcoat, wherein said at least one core comprises at least one drug, and at least one excipient, and said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle. - View Dependent Claims (125, 126, 127, 128)
-
-
129. A method of treating a disease in a subject in need thereof, said method comprising:
-
administering to a subject in need thereof an effective amount of a pharmaceutical composition, said pharmaceutical composition comprising; at least one microparticle comprising at least one core which is at least partially coated with at least one osmotic subcoat, and at least one outer coat which at least partially coats the at least one osmotic subcoat, wherein said at least one core comprises at least one drug, and at least one excipient, and said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle said at least one drug is effective for treating said disease in the subject in need thereof.
-
-
130. A method of making a pharmaceutical composition, said pharmaceutical composition comprising:
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at least one microparticle comprising at least one core which is at least partially coated with at least one osmotic subcoat, and at least one outer coat which at least partially coats the at least one osmotic subcoat, wherein said at least one core comprises at least one drug, and at least one excipient, and said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle, wherein said method comprises (1) forming the at least one core which comprises said at least one drug and at least said one excipient; (2) coating, at least partially, said at least one core with said at least one osmotic subcoat, and (3) coating, at least partially, said at least one osmotic subcoat with said at least one outer coat. - View Dependent Claims (131, 132)
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133. A pharmaceutical composition, which is prepared by a method comprising:
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(1) forming at least one core which comprises at least one drug and at least one excipient; (2) coating, at least partially, said at least one core with at least one osmotic subcoat, and (3) coating, at least partially, said at least one osmotic subcoat with at least one outer coat. - View Dependent Claims (134, 135)
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136. A method of controlling the rate and/or extent of release of at least one drug from the core of a microparticle comprising at least one core into an external environment of use which is at least partially coated with at least one osmotic subcoat, and at least one outer coat at least partially coats the at least one osmotic subcoat, wherein
said at least one core comprises at least one drug and at least one excipient, said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle, the method comprising controlling the thickness of the at least one outer coat, thereby controlling the release rate of the at least one drug from the core of the microparticle into the external environment of use, wherein the external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37° - C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere. - View Dependent Claims (137, 138, 139, 140)
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141. A pharmaceutical composition, comprising
at least one core which is at least partially coated with at least one osmotic subcoat, at least one outer coat which at least partially coats the at least one osmotic subcoat, wherein the at least one core comprises at least one drug and at least one excipient, wherein the at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle, and a means for releasing the at least one drug from the composition.
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144. A method for controlling the rate and/or extent of release of at least one drug from a composition, into an external environment of use, the composition comprising
at least one microparticle comprising at least one core which is at least partially coated with at least one osmotic subcoat, and at least one outer coat which at least partially coats the at least one osmotic subcoat, wherein said at least one core comprises at least one drug, and at least one excipient, and said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle, wherein the method comprises at least one of the following: -
controlling the amount of the at least one osmotic agent in the at least one osmotic subcoat, and controlling the thickness of the at least one outer coat, thereby controlling the release rate of the at least one drug from the core of the microparticle into the external environment of use, wherein the external environment of use is a dissolution medium, wherein the temperature of the dissolution medium is 37°
C.+/−
0.5°
C.,wherein the volume of the dissolution medium is selected from the group consisting of 500 ml and 900 ml, wherein the dissolution medium is selected from the group consisting of water, a 0.1N HCl aqueous solution, a 0.1N HCl aqueous solution with sodium chloride added in an amount of 15.75 g/litre of the solution, a 0.1N HCl aqueous solution with added 0.1 wt % Cetrimide wherein the wt % is based on the weight of the solution, USP Buffer having a pH of 1.5, an acetate buffer having a pH of 4.5, a phosphate buffer having a pH of 6.5, a phosphate buffer having a pH of 6.8, a phosphate buffer having a of pH 7.4, and a 0.1N HCl aqueous solution with sodium chloride added in an amount of 14 g/litre of the solution, wherein the dissolution medium is stirred by a USP type II paddle at 50 rotations per minute or 100 rotations per minute, and wherein the pressure of the atmosphere on the dissolution medium is 1 atmosphere. - View Dependent Claims (145)
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Specification