<p>Anticholinergic agents, cytochrome P450 enzyme inhibitors, such as antimycotic agents (e.g., Ketoconazole, Itraconazole, and Miconazole) or macrolide antibiotics (e.g., erythromycin and clarithromycin), have not been performed. No specific drug-drug interaction studies have been performed with Oxybutynin.</p>