1. Actions: Bethanechol

1. Actions: Bethanechol directly stimulates muscarinic receptors, causing increased intestinal motility and tone. It also stimulates the detrusor muscle of the bladder, whereas the trigone and sphincter are relaxed. These effects increase voiding pressure and decrease bladder capacity to cause expulsion of urine. Activates muscarinic (M) receptors and increases IP3 and DAG