Glimzal M 502 is a combination antidiabetic medication containing Glimepiride (2 mg) and Metformin ... Glimzal M 502 is a combination antidiabetic medication containing Glimepiride (2 mg) and Metformin Hydrochloride SR (500 mg). Glimepiride, a sulfonylurea, increases pancreatic insulin secretion, while Metformin, a biguanide, improves insulin sensitivity and decreases hepatic glucose production. See more