I took Zoloft for a few weeks. I started at 25 mg and went up to fifty. It caused mania so I had to stop. I didn't experience any side effects. However, I strongly advise talking to your doctor before stopping a medication. That goes for any medication. I know loose stools are awful (I have had my gallbladder out and so I rarely even have a normal stool, let alone constipation), but you should talk to your doctor first.