Which condition is commonly treated with OTC drugs that have anticholinergic properties?

• A. Asthma
• B. Overactive bladder and incontinence
• C. COPD
• D. Parkinson's disease

Answer: (B)

Anticholinergic medications work by blocking acetylcholine at muscarinic receptors. In the bladder, acetylcholine stimulates the detrusor muscle to contract; when this signal is reduced, bladder contractions become less frequent and less intense. That’s exactly what helps someone who has overactive bladder or urge incontinence: the urge to urinate decreases, and leakage is reduced. Many OTC products with anticholinergic effects can modestly influence these bladder symptoms, making overactive bladder a condition where such drugs are commonly used.

The other options rely on different therapeutic targets: asthma and COPD are treated with bronchodilators and anti-inflammatory agents, often prescription, not primarily by anticholinergic OTCs; Parkinson’s disease may involve anticholinergic therapy but typically under medical supervision due to side effects, and it’s not an OTC approach. The key idea is that blocking cholinergic activity in the bladder reduces involuntary contractions, which helps with overactive bladder and incontinence.