Compositions for treatment of attention deficit hyperactivity disorder
First Claim
Patent Images
1. A solid, oral pharmaceutical composition comprising:
- a core comprising methylphenidate or a pharmaceutical salt thereof and at least one pharmaceutically acceptable excipient;
a sustained release layer enclosing the core; and
a delayed release layer enclosing the sustained release layer, wherein the formulation provides an 8 hour lag time during which the formulation releases no more than 10% of the total methylphenidate or a pharmaceutical salt thereof followed by a sustained release period of 10-12 hours when the composition is placed in 700 ml aqueous solution of 0.1N HCl pH 1.1, for up to 2 hours followed by 2-6 hours in sodium phosphate buffer at pH 6.0;
followed by 6-20 hours in sodium phosphate buffer, pH 7.2 at 37°
C.±
0.5°
C., as measured by the USP Apparatus I.
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Abstract
Therapeutic compositions and methods for treatment of attention deficit disorder (ADD) or attention deficit hyperactivity disorder (ADHD) include dosage forms that deliver a therapeutic amount of active drug in a delayed and controlled release formulation. The dosage form can be administered at night and drug release is delayed for from 4 to 6 hours or longer, followed by an ascending release rate.
102 Citations
26 Claims
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1. A solid, oral pharmaceutical composition comprising:
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a core comprising methylphenidate or a pharmaceutical salt thereof and at least one pharmaceutically acceptable excipient; a sustained release layer enclosing the core; and a delayed release layer enclosing the sustained release layer, wherein the formulation provides an 8 hour lag time during which the formulation releases no more than 10% of the total methylphenidate or a pharmaceutical salt thereof followed by a sustained release period of 10-12 hours when the composition is placed in 700 ml aqueous solution of 0.1N HCl pH 1.1, for up to 2 hours followed by 2-6 hours in sodium phosphate buffer at pH 6.0;
followed by 6-20 hours in sodium phosphate buffer, pH 7.2 at 37°
C.±
0.5°
C., as measured by the USP Apparatus I. - 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)
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Specification