Pharmaceutical excipient having improved compressibility
First Claim
1. An excipient composition comprising a particulate agglomerate of coprocessed microcrystalline cellulose and a surfactant, said surfactant being present in an amount from about 0.1% to about 0.5% by weight of the microcrystalline cellulose, said microcrystalline cellulose and said surfactant being in intimate association with each other.
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Accused Products
Abstract
A microcrystalline cellulose-based excipient having improved compressibility, whether utilized in direct compression, dry granulation or wet granulation formulations, is disclosed. The excipient is an agglomerate of microcrystalline cellulose particles and an effective amount of a surfactant, which, in preferred embodiments is an anionic surfactant present in amounts ranging from about 0.1% to about 0.5%, by weight of the microcrystalline cellulose, wherein the microcrystalline cellulose and surfactant are in intimate association with each other. One preferred anionic surfactant utilized in the novel excipient is sodium lauryl sulfate.
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Citations
60 Claims
- 1. An excipient composition comprising a particulate agglomerate of coprocessed microcrystalline cellulose and a surfactant, said surfactant being present in an amount from about 0.1% to about 0.5% by weight of the microcrystalline cellulose, said microcrystalline cellulose and said surfactant being in intimate association with each other.
- 20. An excipient composition, comprising from about 1% to about 99% of an excipient comprising a particulate agglomerate of coprocessed microcrystalline cellulose and from about 0.1% to about 0.5% of a surfactant by weight of said microcrystalline cellulose, the microcrystalline cellulose and said surfactant being in intimate association with each other, and from about 99% to about 1% of an active ingredient.
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30. An augmented microcrystalline cellulose excipient suitable for compression into a solid dosage form with a therapeutically active agent via a wet granulation method, comprising particles of microcrystalline cellulose having from about 0.1% to about 0.5% of an anionic surfactant, by weight of said microcrystalline cellulose integrated with said microcrystalline cellulose particles.
- 31. An excipient composition comprising a particulate agglomerate of coprocessed microcrystalline cellulose, silicon dioxide, and surfactant, said Silicon dioxide and said surfactant being present in an amount by weight of the microcrystalline cellulose which is effective to augment the compressibility of the microcrystalline cellulose, said microcrystalline cellulose, said silicon dioxide, and said surfactant being in intimate association with each other.
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52. An excipient composition comprising
from about 1% to about 99% of an excipient including a particulate agglomerate of coprocessed microcrystalline cellulose, from about 0.1% to about 5.0% of a surfactant by weight of said microcrystalline cellulose, and silicon dioxide, the microcrystalline cellulose, the silicon dioxide, and said surfactant being in intimate association with each other; - and
from about 99% to about 1% of an active ingredient. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60)
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Specification