Answer
Oxybutynin hydrochloride is primarily metabolised in the liver by CYP3A4, an isoenzyme of the cytochrome P450 system.
Sources for this answer
- Oxybutynin hydrochloride 5mg/5ml Oral SolutionSyriMed · emc · SmPC §5.2 Pharmacokinetic properties · Version 7Document updated
Sources checked