What is metformin hcl used for?

Metformin Hcl 500 mg is primarily used to manage type 2 diabetes mellitus. It works by improving insulin sensitivity and reducing glucose production in the liver, helping to lower blood sugar levels. Metformin is often prescribed as part of a comprehensive treatment plan that includes diet and exercise. It can be used alone or in combination with other diabetes medications. Additionally, metformin may be used off-label for conditions such as polycystic ovary syndrome (PCOS) to help regulate menstrual cycles and improve insulin resistance. 

Metformin is mainly for managing type 2 diabetes, but it's also used off-label for PCOS and improving insulin resistance.