Important Information About Insulin Glargine – FFD Insulin glargine is a long-acting, manmade insulin used by both type 1 and type 2 diabetics. In type 1 diabetes, the body doesn’t produce insulin at all, so insulin glargine must be combined with short-acting (bolus) insulin. In type 2 diabetes, it may be prescribed alongside oral medications or other insulins when the body’s...