Nortriptyline
irritable bowel syndrome
"Started taking it for depression, (150mg) but have had IBS with diarrhea and cramping pain starting about 10 years ago. Taking immodium/loperamide at least every other day kept it under control since then, but after going on nortriptyline I've noticed it's improved this to where I only need to take immodium like once a week now to be completely symptom free."