A mother came in to our clinic today. She is a diabetic who's medication is being changed to metformin (Novo-metformin). It's an oral antiheyperglycemic agent. Her endocrinologist has advised her to stop breastfeeding because of the new drug. I'm sorry that I don't have other clinical details as to why the drug is being prescribed. The only info I can find is in the Drug info book for Health care professionals. Anyone with any information? Thanks.