Hi Tabitha, welcome to IBS!
Zelnorm isn't only for IBS (or IBD). It is for anyone who has a slow digestive tract. I used it for about
8 months and I loved it. I went from "going" every 3 or 4 days to every day or every other day. At first it gave me a headache but after a couple days that went away. I felt a little off (stomach a bit queasy) as well for the first couple days. I did not have D, nor did I feel dizzy. If you do try Zelnorm and you get a lot of D or you feel dizzy and/or light headed, stop taking it and call your doc.
There are a few of us here who liked it and a few others who didn't. I hope it works for you! Please keep us posted.