Which of the following is an important teaching point for a patient prescribed oxybutynin?

A. Increase fluid intake to prevent dehydration: Oxybutynin can cause dry mouth and other anticholinergic effects that may lead to dehydration. Patients should increase fluid intake to prevent dehydration. B. Avoid high-fiber foods: This is not necessary for oxybutynin use, and high-fiber foods do not directly interfere with the medication. C. Expect to experience dizziness and stop taking the medication if it occurs: Dizziness can occur, but patients should consult their healthcare provider rather than discontinuing the medication abruptly. D. Take the medication on an empty stomach: Oxybutynin can be taken with or without food, and there is no specific instruction to take it on an empty stomach.