Type 2 Diahroea side effect with Metformin?

[Annb]

Yes, I take Co-codamol as well - not as much as I could, but enough to slow my gut down a bit. I take it for arthritic pain and also find it helps my ~"restless legs". The response to Metformin seems to have reduced quite a bit since going low carb. Before that, I was thoroughly investigated (endoscopy and colonoscopy) and at that stage they found bowel cancer - early enough to do something about it, thankfully. So every so-often they have me back in to check - found some more early enough to cut bits out but nothing now for about 4 years. However, the bowel problems persisted and the surgeon decided that the problem was the Metformin and I had to decide whether to take the Metformin and reduce the glucose problem or stop it and reduce the bowel problem. Diabetes medics wanted me to keep going with the Metformin, so I now take only 2 x 500mg tablets a day and - on almost no carbs - the problem has gone (actually reversed).