Delivery of drugs to the lower GI tract
First Claim
1. A pharmaceutical tablet having an inner composition optionally coated by a pharmaceutically-acceptable coating, said tablet designed for orally delivering a therapeutically effective amount of a drug to the lower GI tract without significant release of the drug in the upper GI tract after oral administration of the tablet, which inner composition of the tablet comprisesabout 0.01% by weight to about 10.0% by weight of a drug useful for treating a lower GI tract disorder;
- about 40% by weight to about 98% by weight of a hydrocolloid gum obtainable from higher plants; and
about 2% by weight to about 50% by weight of a pharmaceutically acceptable excipient;
no enteric polymeric material or gas-forming excipient, wherein the components of the inner composition are distributed so that the drug is concentrated in an active core with the gum and excipient surrounding the active core.
5 Assignments
0 Petitions
Accused Products
Abstract
Pharmaceutical compositions for orally delivering a therapeutically effective amount of a drug to the colon without significant release of the drug in the upper GI tract after oral administration of the composition are described. The composition is a unit dosage in the form of a tablet that comprises about 0.01% by weight to about 10% by weight of the drug that is useful in treating a colonic disorder or that is absorbed from the colon; about 40% by weight to about 98% by weight of a hydrocolloid gum obtainable from higher plants; and about 2% by weight to about 50% by weight of a pharmaceutically acceptable binder. The compositions are useful for treating lower GI disorders in human subjects by administering a suitable amount to a subject in need thereof. A particularly preferred aspect is the process for preparing such composition in the form of a tablet.
202 Citations
30 Claims
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1. A pharmaceutical tablet having an inner composition optionally coated by a pharmaceutically-acceptable coating, said tablet designed for orally delivering a therapeutically effective amount of a drug to the lower GI tract without significant release of the drug in the upper GI tract after oral administration of the tablet, which inner composition of the tablet comprises
about 0.01% by weight to about 10.0% by weight of a drug useful for treating a lower GI tract disorder; -
about 40% by weight to about 98% by weight of a hydrocolloid gum obtainable from higher plants; and about 2% by weight to about 50% by weight of a pharmaceutically acceptable excipient; no enteric polymeric material or gas-forming excipient, wherein the components of the inner composition are distributed so that the drug is concentrated in an active core with the gum and excipient surrounding the active core. - 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)
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Specification