Solid Pharmaceutical Compositions Containing Pregabalin
A solid pharmaceutical composition containing pregabalin is described. The composition includes a matrix forming agent and a swelling agent and is suitable for once daily oral administration. Exemplary matrix forming agents include mixtures of polyvinyl acetate and polyvinylpyrrolidone, and exemplary swelling agents include cross-linked polymers of polyvinylpyrrolidone.
1 - 15 . (canceled)
16 . A pharmaceutical composition comprising an active pharmaceutical ingredient and excipients, the active pharmaceutical ingredient comprising pregabalin, or a pharmaceutically acceptable complex, salt, solvate or hydrate thereof, and the excipients comprising a matrix forming agent and a swelling agent, the matrix forming agent comprising polyvinyl acetate and polyvinylpyrrolidone, and the swelling agent comprising crosslinked polyvinylpyrrolidone, wherein the pharmaceutical composition is adapted for once-daily oral dosing; wherein the pregabalin comprises from about 5% to about 60% of the pharmaceutical composition by weight; the matrix forming agent comprises from about 5% to about 45% of the pharmaceutical composition by weight, and the swelling agent comprises from about 15% to about 70% of the pharmaceutical composition by weight.
17 . The pharmaceutical composition according to claim 16 in which:
a) said matrix forming agent comprises about 20% to about 35% of the pharmaceutical composition by weight, and;
b) said swelling agent comprises about 20% to about 55% of the pharmaceutical composition by weight.
18 . The formulation according to claim 16 in which the polyvinyl acetate is present in the quantity of about 60% to about 90% by weight based on the total weight of the polyvinyl acetate and polyvinylpyrrolidone.
19 . The formulation according to claim 16 in which the polyvinyl acetate is present in the quantity of about 70% to about 90% by weight based on the total weight of the polyvinyl acetate and polyvinylpyrrolidone.
20 . A pharmaceutical formulation suitable for once-a-day administration comprising:
a) pregabalin, or a pharmaceutically acceptable complex, salt, solvate or hydrate thereof, present in the quantity of from about 5% to about 60%, based on the total weight of the formulation;
b) a matrix of polyvinyl acetate and polyvinylpyrrolidone, in which the polyvinyl acetate is present in the quantity of about 70% to about 90% based on the total weight of the polyvinyl acetate and polyvinylpyrrolidine and the matrix is present in the quantity of about 20% to 35% by weight, based on the total weight of the formulation, and;
c) cross linked polyvinylpyrrolidone, present in the quantity of about 10% to about 35% by weight, based on the total weight of the formulation.
21 . The formulation according to claim 20 in which the cross linked polyvinylpyrrolidone is present in the quantity of from about 20% to about 30% by weight, based on the total weight of the formulation.