Like many of the others who have posted to this site, I have been dealing with what I thought was IBS for the past 3 years or so. I'm healthy and mid-30s and couldn't figure out what was causing it. Colonoscopy and other tests showed that all was normal. I don't drink caffeine, coffee or alcohol. Healthy as can be. Finally discovered it was a dairy intolerance. Coming off dairy solved the diarrhea issue but really limited my diet. Shortly after I discovered Lactaid Fast Act supplements and started to take them at meals when I had dairy.
For the first three weeks, the pills worked great. I loved them. I could eat like normal again without diarrhea. But after that time, I started to feel a sharp pain in my stomach when I take them...like someone slugged me in the stomach. It always comes within 5 minutes of taking a pill. Since then, it has gotten worse. Gas, bloating, and a constant pain (gnawing feeling) in my stomach that nearly has me doubled up. I've never had an ulcer, but from what I've read, that's what it feels like. I decided to stop using the pills.
I just discovered this site and was amazed to see that others have had the same. I should have checked for side effects before I took it! I've not had the vomiting that many of the others have had, but I won't be taking it any longer and risking that!
Hoping there is some alternative solution out there. Hard to imagine the rest of my life without cheese or dairy in anything (bread, dressing, etc.).