At this point (nearly four weeks of use), I would rate it at 9.Within a few days, I felt relief from urgency and bloating and a reduction in daily episodes of D. After one week, I'd gone from D to loose stools, and the next week was experiencing normal bowel movements (2-3 a day, down from about 8-10 episodes of D a day). I am now eating several foods I was avoiding including salads, broccoli, and tomatoes in small quantities.A bonus I hadn't expected is that I am also sleeping better -- this is unconnected to IBS symptoms as they have never been a cause for sleeplessness. I can only assume that this supplement may influence nerve chemistry is some subtle way.Truly, Ibsacol has improved the quality of my life and I will certainly reorder.