Dược Động Học :
▧ Absorption :
Rapidly absorbed from gastrointestinal tract.
▧ Volume of Distribution :
* 193 L
▧ Protein binding :
91%-93%
▧ Metabolism :
Hepatic, primarily by CYP3A4
▧ Route of Elimination :
Oxybutynin is metabolized primarily by the cytochrome P450 enzyme systems, particularly CYP3A4, found mostly in the liver and gut wall. Oxybutynin is extensively metabolized by the liver, with less than 0.1% of the administered dose excreted unchanged in the urine.
Also, less than 0.1% of the administered dose is excreted as the metabolite N-desethyloxybutynin.
▧ Half Life :
12.4-13.2 hours