As I was saying to fairy... I have had extreme diahorrea for 4 weeks now I thought it was an ibs flare up my OH thought he had given me food poisoning my gp said gastroenteritis and wanted me to go for colonoscopy as it was not clearing up. Then I found out what it was ... 4 weeks ago I cut my caffiene right down to 1 cup in the morning and then drank lots of bottled flavoured water..... Found out today it has the artificial sweetner sorbitol in it which in large quantities like I was drinking acts as a laxative for people with ibs. Duhhhh. I blame fibro fog ... Never thought to check the bottle labels earlier.... Stopped drinking it 6 hours ago and already seeing an improvement. Feel free to shout idiot at me when you see me lurking on here.