Adverse effects: Bethanechol

3. Adverse effects: Bethanechol causes the effects of generalized cholinergic stimulation-. These include sweating, salivation, flushing, decreased blood pressure, nausea, abdominal pain, diarrhea, and bronchospasm. Atropine sulfate may be administered to overcome severe cardiovascular or bronchoconstrictor responses to this agent.cyclospasm urinary urgency, plus vasodilation, reflex tachycardia, and sweating