Press coated, pulsatile drug delivery system suitable for oral administration
First Claim
1. A press-coated tablet suitable for oral administration, comprising:
- (a) an immediate-release compartment comprising a compressed blend of an active agent and one or more polymers, wherein said immediate release compartment is characterized by a dissolution profile in which 10-75%0 of the active agent is dissolved within one hour and not less than 90% of the active agent is dissolved within 6 hours, based on the total amount of the active agent in the compartment, wherein the dissolution profile is measured in a type 2 dissolution apparatus (paddle) according to U.S. Pharmacopeia XXII at 37°
C.±
0.5°
C. in deionized water at 75 rotations per minute, and (b) an extended-release compartment, wherein said extended-release compartment is characterized by a dissolution profile in which 5-40% of the active agent is dissolved within one hour, 20-75% of the active agent is dissolved within three hours, 40-95% of the active agent is dissolved within 6 hours, and not less than 60% of the active agent is dissolved within 8 hours, based on the total amount of the active agent in the compartment, wherein the dissolution profile is measured in a type 2 dissolution apparatus (paddle) according to U.S. Pharmacopeia XXII at 37°
C.±
0.5°
C. in deionized water at 75 rotations per minute, wherein the extended-release compartment is formed by press-coating to substantially envelop the immediate-release compartment, and comprises a compressed blend of the active agent, a hydrophilic polymer and hydrophobic material, wherein the tablet exhibits a first order release of the active agent interrupted by a pulsed delivery of the active agent.
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0 Petitions
Accused Products
Abstract
A press-coated tablet suitable for oral administration, comprising an immediate-release compartment comprising a compressed blend of an active agent. The immediate-release compartment has a dissolution profile in which 10-75% of the active agent is dissolved within one hour and not less than 90% of the active agent is dissolved within 6 hours. The tablet further comprises an extended-release compartment with a dissolution profile in which 5-40% of the active agent is dissolved within one hour, 20-75% within three hours, 40-95% of the active agent within 6 hours, and not less than 60% of the active agent is dissolved within 8 hours. Additionally, the press-coated extended-release compartment substantially envelops the immediate-release compartment, and comprises a compressed blend of the active agent, a hydrophilic polymer and hydrophobic material. The tablet exhibits a first order release of the active agent interrupted by a pulsed delivery of the active agent.
22 Citations
20 Claims
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1. A press-coated tablet suitable for oral administration, comprising:
-
(a) an immediate-release compartment comprising a compressed blend of an active agent and one or more polymers, wherein said immediate release compartment is characterized by a dissolution profile in which 10-75%0 of the active agent is dissolved within one hour and not less than 90% of the active agent is dissolved within 6 hours, based on the total amount of the active agent in the compartment, wherein the dissolution profile is measured in a type 2 dissolution apparatus (paddle) according to U.S. Pharmacopeia XXII at 37°
C.±
0.5°
C. in deionized water at 75 rotations per minute, and(b) an extended-release compartment, wherein said extended-release compartment is characterized by a dissolution profile in which 5-40% of the active agent is dissolved within one hour, 20-75% of the active agent is dissolved within three hours, 40-95% of the active agent is dissolved within 6 hours, and not less than 60% of the active agent is dissolved within 8 hours, based on the total amount of the active agent in the compartment, wherein the dissolution profile is measured in a type 2 dissolution apparatus (paddle) according to U.S. Pharmacopeia XXII at 37°
C.±
0.5°
C. in deionized water at 75 rotations per minute, wherein the extended-release compartment is formed by press-coating to substantially envelop the immediate-release compartment, and comprises a compressed blend of the active agent, a hydrophilic polymer and hydrophobic material,wherein the tablet exhibits a first order release of the active agent interrupted by a pulsed delivery of the active agent. - 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