Sustained release drug delivery system suitable for oral administration
First Claim
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1. A single bead drug delivery system suitable for oral administration comprising:
- a) a first drug compartment containing an effective amount of an active agent, or a pharmaceutically acceptable salt thereof, optionally in association with a pharmaceutically acceptable binder or excipient;
b) a first polymer compartment which substantially envelops said first drug compartment to form a first drug/polymer interface;
c) a second drug compartment containing an effective amount of an active agent, or a pharmaceutically acceptable salt thereof, optionally in association with a pharmaceutically acceptable binder or excipient, wherein said second drug compartment substantially envelops said first polymer compartment to form a second drug/polymer interface;
d) a second polymer compartment which substantially envelops said second drug compartment to form a third drug/polymer interface; and
wherein said single bead drug delivery system can release said active agent in multiple phases.
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Abstract
A single bead drug delivery system suitable for oral administration with multiply layered drug and polymer compartments can provide a two-step release of active agent to facilitate an immediate yet sustained drug delivery over a 24 hour period following oral administration with minimized variance between peak and trough levels of therapeutic drug amounts.
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Citations
20 Claims
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1. A single bead drug delivery system suitable for oral administration comprising:
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a) a first drug compartment containing an effective amount of an active agent, or a pharmaceutically acceptable salt thereof, optionally in association with a pharmaceutically acceptable binder or excipient; b) a first polymer compartment which substantially envelops said first drug compartment to form a first drug/polymer interface; c) a second drug compartment containing an effective amount of an active agent, or a pharmaceutically acceptable salt thereof, optionally in association with a pharmaceutically acceptable binder or excipient, wherein said second drug compartment substantially envelops said first polymer compartment to form a second drug/polymer interface; d) a second polymer compartment which substantially envelops said second drug compartment to form a third drug/polymer interface; and wherein said single bead drug delivery system can release said active agent in multiple phases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification