I was given Metformin nearly 10 years ago and was suffering stomach cramps for 8 years before my GP investigated. I was originally given 1 tablet twice a day and then suddenly changed to 2 tablets twice a day as the Diabetes Nurse felt everyone should take this quantity. The stomach cramps got worse and so did pain in my feet and legs. It has taken all this time to find out the cause. The stomach cramps were caused when the Metformin released itself inside my body so finally my new GP said "We can prescribe you these drugs but you don't have to swallow them. So I stopped immediately an have for the past two years controlled my sugars with diet alone and if I get indigestion with anything I have eaten then I don't rely on tablets for that I have Green peppermint tea and relief in 20 minutes. However remember that too much sugar will build up on your liver so a daily dose of lemon juice in water first thing will keep that clear as well as green tea. A fatty liver can make you very ill so address that. I have only just discovered that the statins that had been given to me in a manor of "You will have to take these now!" were causing pain in my legs and feet so have stopped them immediately too and feel so much better. I sought advice from the Pharmacist on those. They take 14 hours to get out of your system but maybe a year to improve the damage they cause some people. Follow the low carb diet available through Diabetes UK change over to high fat low carb diet with their advice but remember to have the good fats which will be lower in sugar than the low fat products and some will help lower your bad cholesterol too. Study the diet in great deal and you will be better in the long run. My last two visits to the diabetes Nurse has been great and she congratulated me on better control and a lower HbA1C. My meds are down to the bare minimum now and I feel so much better and not having so many side effects. I love the natural way. Tell your friend "Good Luck and Go for it!"