I have recently been diagnosed with T2 (Feb), and was prescribed Metformin 500mg to start, slow start ie 1 per day, building up to 2 a day, then 3 a day, then Metformin 850mg was introduced dovetailing in whilst the 500mg was being tailed off. A consistent side effect has been diarrhea, such that it has affected my daily life. I have discussed this with the practice diabetes nurse, and she mentioned that if it doesn't settle a slow release equivalent can be prescribed. My 850mg supply is coming to an end this week, so will go to see her again and ask for the slow release equivalent, in the hope that it will not have the same side effects. The question I have for you is have you had the same side effects, and / or have you taken the slow release equivalent, and has it had an effect in reducing your diarrhea or perhaps even not? I would value and appreciate your feedback. Thank you.