Details for Patent: 7,759,359

Title:	Method of treating bladder dysfunction with once-a-day trospium salt formulation
Abstract:	A pharmaceutical composition of a pharmaceutically acceptable trospium salt, with upon administration to a human patient generates an average steady state blood levels of trospium with a minimum (C.sub.min) and maximum (C.sub.max) blood levels of about 0.5-2.5 ng/ml and about 2.0-6.0 ng/ml, respectively.
Inventor(s):	Kidane; Argaw (Montgomery Village, MD), Flanner; Henry H. (Montgomery Village, MD), Bhatt; Padmanabh (Rockville, MD), Raoufinia; Arash (McLean, VA)
Assignee:	Supernus Pharmaceuticals, Inc. (Rockville, MD)
Filing Date:	Aug 17, 2007
Application Number:	11/889,964
Claims:	1. A method for treating a bladder dysfunction in a patient comprising orally administering to a patient suffering from a bladder dysfunction a once-a-day dosage formulation of a pharmaceutically acceptable salt of trospium (Tr.sup.+) comprising at least one component selected from the group consisting of an extended release (XR) and a delayed release (DR) component; wherein at least a portion of said formulation releases trospium chloride in the lower gastrointestinal (GI) tract; which formulation provides an average Cmax at steady state of less than 2400 pg/ml of Tr.sup.+ at a Tmax of less than 6 hours; and wherein the bladder dysfunction is selected from the group consisting of urinary frequency, urgency, nocturia, urge-incontinence associated with detrusor instability, urge syndrome, and detrusor hyperreflexia. 2. The method of claim 1 in which the pharmaceutically acceptable salt of trospium is selected from the group consisting of a fluoride, chloride, bromide and iodide salt of trospium. 3. The method of claim 1 in which the pharmaceutically acceptable salt of trospium is trospium chloride. 4. The method of claim 1 which produces fewer incidents of one or more side effects, selected from the group of dry mouth, headache, constipation, dyspepsia, and abdominal pain, compared with the number of incidents of said one or more side effects observed after oral, twice daily administration of a 20 mg immediate release dosage formulation of trospium chloride. 5. The method of claim 1 in which said once-a-day formulation includes a mixture of a delayed release (DR) component and an extended release (XR) component. 6. The method of claim 5 in which the DR component and XR component each includes 30 mg of trospium chloride. 7. A method for treating a bladder dysfunction in a patient comprising orally administering to a patient suffering from a bladder dysfunction a once-a-day dosage formulation of a pharmaceutically acceptable salt of trospium (Tr.sup.+), comprising at least one component selected from the group consisting of an extended release (XR) and a delayed release (DR) component, wherein at least a portion of said formulation releases trospium chloride in the lower gastrointestinal (GI) tract; which formulation provides an average Cmax at steady state of less than 2400 pg/ml of Tr.sup.+ at a Tmax of less than 6 hours and which average steady state blood levels of Tr.sup.+ do not fall below 500 pg/ml; and wherein the bladder dysfunction is selected from the group consisting of urinary frequency, urgency, nocturia, urge-incontinence associated with detrusor instability, urge syndrome, and detrusor hyperreflexia. 8. The method of claim 7 in which the pharmaceutically acceptable salt of trospium is selected from the group consisting of a fluoride, chloride, bromide and iodide salt of trospium. 9. The method of claim 7 in which the pharmaceutically acceptable salt of trospium is trospium chloride.