The Liver Flush typically would only give me relief from IBS for a week or two, then it would start back up. I later found a cure for my IBS in such a simple thing as yogurt. I don't eat a ton of it. I get the large container of it from walmart for 1.67 and eat a tiny bowl of it each night. within a week of starting this my IBS went away. My husband began eating it also but was nervous since he has some dairy intolerence issues, but after about a week, it helped him also and seems to have made him more tolerant of the dairy.
My first handful of Liver-Flush were in the condition you are in. If one has such loose bowels, and now way to stop it, then you have to plow ahead and take your chance I think to take care of the larger issues at hand. I only did a Colon Cleanse with my first flush, but since then have only done it a few times, but many flushes without. I would defer to those with many more years of experience than mine though if they felt it was required.