Methods and compositions for the treatment of CNS-related conditions
DCFirst Claim
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1. A method of treating a CNS-related condition comprising orally administering once a day to a human subject in need thereof:
- (a) 5-40 mg memantine or a pharmaceutically acceptable salt thereof provided in an extended release dosage form, wherein said extended release memantine or pharmaceutically acceptable salt thereof provides a change in plasma concentration as a function of time (dC/dT) that is less than about 50% of the dC/dT of the same quantity of an immediate release form of memantine, wherein the dC/dT is measured in a single dose human PK study between the time period of 0 to Tmax of the immediate release form of memantine; and
(b) a therapeutically effective amount of donepezil or a pharmaceutically acceptable salt thereof, wherein the CNS-related condition is selected from the group consisting of Alzheimer'"'"'s disease and dementia.
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Abstract
The present invention provides novel methods and compositions for the treatment and prevention of CNS-related conditions. One of the CNS-related conditions treated by the methods and compositions of the invention is Alzheimer'"'"'s disease.
114 Citations
58 Claims
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1. A method of treating a CNS-related condition comprising orally administering once a day to a human subject in need thereof:
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(a) 5-40 mg memantine or a pharmaceutically acceptable salt thereof provided in an extended release dosage form, wherein said extended release memantine or pharmaceutically acceptable salt thereof provides a change in plasma concentration as a function of time (dC/dT) that is less than about 50% of the dC/dT of the same quantity of an immediate release form of memantine, wherein the dC/dT is measured in a single dose human PK study between the time period of 0 to Tmax of the immediate release form of memantine; and (b) a therapeutically effective amount of donepezil or a pharmaceutically acceptable salt thereof, wherein the CNS-related condition is selected from the group consisting of Alzheimer'"'"'s disease and dementia. - View Dependent Claims (2, 3, 4, 5, 22, 23, 24, 25, 26, 27, 40, 41, 43, 45, 46, 47, 48, 53, 56)
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6. A method of reducing the potential for an adverse effect in a human subject being treated for a CNS-related condition comprising orally administering once a day to a human subject in need thereof a pharmaceutical composition comprising:
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(a) 5-40 mg memantine or a pharmaceutically acceptable salt thereof in an extended release form, wherein said extended release memantine or pharmaceutically acceptable salt thereof provides a change in plasma concentration as a function of time (dC/dT) that is less than about 50% of the dC/dT of the same quantity of an immediate release form of memantine, wherein the dC/dT is measured in a single dose human PK study between the time period of 0 to Tmax of the immediate release form of memantine; and (b) donepezil or a pharmaceutically acceptable salts thereof, wherein the CNS-related condition is selected from the group consisting of Alzheimer'"'"'s disease and dementia; and further wherein said adverse effect is related to memantine. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 28, 29, 30, 31, 32, 33, 42, 44, 49, 54, 57)
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34. In a method of treating a subject for a CNS-related condition comprising administering to said subject a memantine drug selected from the group consisting of memantine and a pharmaceutically acceptable salt thereof, and a therapeutically effective amount of a donepezil drug selected from the group consisting of donepezil and a pharmaceutically acceptable salt thereof, the improvement comprising:
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(a) said memantine drug is administered in an extended release dosage form, wherein said extended release memantine provides a change in plasma concentration as a function of time (dC/dT) in a defined time period of 0 to Tmax of an immediate release form of memantine after administration, as measured in a human single dose PK study, that is less than about 50% of the change in plasma concentration (dC/dT) of the same quantity of said immediate release form of said memantine drug during said defined time period; and (b) said memantine drug is administered once daily in a dose range of 5 mg to 40 mg;
wherein said CNS-related condition is selected from the group consisting of Alzheimer'"'"'s disease and Parkinson'"'"'s disease. - View Dependent Claims (35, 36, 37, 38, 39, 50, 51, 52, 55, 58)
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Specification