Extended release formulation of diltiazem hydrochloride
AssigneeDOV Pharmaceutical, Inc.
InventorArnold Lippa
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AssigneeDOV Pharmaceutical, Inc.
InventorArnold Lippa
Estimating the term…
An extended release formulation of diltiazem which is suitable for once-daily oral administration comprises a quantity of a quick release preparation of diltiazem or a pharmaceutically active salt thereof, mixed with a quantity of a slow release (or delayed release) preparation of diltiazem or a pharmaceutically active salt thereof. The quick release preparation used obtains a maximal release of diltiazem within approximately 1-2 hours after administration, and then falls toward baseline levels. The delayed release preparation individually shows a maximal release of diltiazem at between approximately 6-8 hours after administration. The formulation containing the two preparation achieves a maximal release of diltiazem approximately within 1-2 hours after administration, and the levels of released diltiazem remain near these maximal levels for approximately another 12 hours after administration, compared to other extended release formulations of diltiazem (referred to herein as slow or delayed release preparations) which achieve maximal release approximately 9 hours after oral administration. The preferred embodiment is a capsule containing the formulation, which, based upon the total quantity of drug in the formulation rather than total weight of the formulation, comprises equal weights of the quick release and slow release forms of diltiazem, and preferably up to 50 percent by weight of each of the slow (or delayed) and quick release preparation of diltiazem. The present invention has application for combinations of other preparations of quick release and slow or delayed release pharmaceuticals.
A controlled release pharmaceutical formulation comprising:
A controlled release pharmaceutical formulation comprising:
A controlled release pharmaceutical formulation comprising:
A method for treating abnormal cardiac activity, said method comprising the steps of:
Dependencies are inferred from the claim text.