What is the MOST common side effect noted when oxybutynin chloride (Ditropan) is used in the management of dysfunctional voiding?

What is the MOST common side effect noted when oxybutynin chloride (Ditropan) is used in the management of dysfunctional voiding?

• A. Headache
• B. Dry mouth
• C. Palpitations
• D. Diarrhea

Answer: (B)

The main idea is that oxybutynin is an antimuscarinic used to calm an overactive bladder, but this class of drugs also reduces secretions in other tissues. Blocking muscarinic receptors in the salivary glands lowers saliva production, so dry mouth becomes the most common side effect. While headache and palpitations can occur with anticholinergics, they’re less frequent, and diarrhea isn’t typical because antimuscarinics tend to slow gut activity (often causing constipation, not diarrhea). In practice, patients often notice dry mouth early and may cope with it by sipping water, using sugar-free gum, or saliva substitutes, and by maintaining good oral hygiene.

The main idea is that oxybutynin is an antimuscarinic used to calm an overactive bladder, but this class of drugs also reduces secretions in other tissues. Blocking muscarinic receptors in the salivary glands lowers saliva production, so dry mouth becomes the most common side effect. While headache and palpitations can occur with anticholinergics, they’re less frequent, and diarrhea isn’t typical because antimuscarinics tend to slow gut activity (often causing constipation, not diarrhea). In practice, patients often notice dry mouth early and may cope with it by sipping water, using sugar-free gum, or saliva substitutes, and by maintaining good oral hygiene.