Fesoterodine
Encyclopedia
Fesoterodine is an antimuscarinic drug developed by Schwarz Pharma AG to treat overactive bladder syndrome (OAB). It was approved by the European Medicines Agency
European Medicines Agency
The European Medicines Agency is a European agency for the evaluation of medicinal products. From 1995 to 2004, the European Medicines Agency was known as European Agency for the Evaluation of Medicinal Products.Roughly parallel to the U.S...

 in April 2007 and was approved by the US Food and Drug Administration
Food and Drug Administration
The Food and Drug Administration is an agency of the United States Department of Health and Human Services, one of the United States federal executive departments...

 on October 31, 2008.

Fesoterodine is a prodrug
Prodrug
A prodrug is a pharmacological substance administered in an inactive form. Once administered, the prodrug is metabolised in vivo into an active metabolite, a process termed bioactivation. The rationale behind the use of a prodrug is generally for absorption, distribution, metabolism, and...

. It is broken down into its active metabolite, 5-hydroxymethyl tolterodine
Tolterodine
Tolterodine is an antimuscarinic drug that is used to treat urinary incontinence.It is marketed by Pfizer in Canada and the United States by its brand name Detrol. In Egypt it is also found under the trade names Tolterodine by Sabaa and Incont L.A...

, by plasma esterase
Esterase
An esterase is a hydrolase enzyme that splits esters into an acid and an alcohol in a chemical reaction with water called hydrolysis.A wide range of different esterases exist that differ in their substrate specificity, their protein structure, and their biological function.- EC classification/list...

s.

Efficacy

In two large, 12-week, randomized, double-blind multicentre Phase III trials, oral fesoterodine 4 or 8mg once daily improved the symptoms of OAB significantly more than placebo.
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