They took out my gallbladder because of stones. No place to store the bile now. Without a gallbladder, the bile enters the intestine in a fairly random way. In some people, that bile acts as a powerful laxative. Unfortunately, I'm in that group. I have challenges now. I miss my gallbladder. Stupid gallbladder.
My GI doctor prescribed me Colesevelam for that. It's a cholesterol drug but it's used off-label for treating post-cholecystectomy diarrhea. Looks like cholestyramine is also used for that. Worth asking your doctor about. It worked for me after we dialed in the dosage.