Metformin HCl 500 mg (Hydrochloride) is a commonly prescribed medication used to manage and control high blood sugar levels in individuals with type 2 diabetes. It belongs to the class of drugs known as biguanides. The "HCl" in the name stands for hydrochloride, which is the chemical salt form of the drug.

Metformin works by reducing glucose production in the liver and improving insulin sensitivity, which helps the body use insulin more effectively. It also aids in the uptake and utilization of glucose by muscle cells. These actions result in lower blood sugar levels.

The dosage strength "500 mg" refers to the amount of metformin hydrochloride contained in each tablet or capsule. Dosage may vary depending on the individual's specific needs and the instructions provided by the prescribing healthcare professional. It is important to take metformin as directed and to follow the prescribed dosage and frequency to effectively manage diabetes.