A patient is administered bethanechol for urinary retention. The patient is most likely to complain of which side effect?

Explanation

•Bethanechol is a muscarinic agonist that increases the tone of the detrusor muscle, causing bladder contractions; increases gastric tone; and increases peristalsis.

•Side effects are caused by acetylcholine activation and include increased gastric acid secretion, diarrhea, abdominal cramps, nausea, belching, vomiting, increased salivation, and watery eyes

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