Humulin M3 is a type of insulin medication designed to help control blood sugar levels in individuals with diabetes. It is a biphasic insulin, meaning it contains a mix of both fast-acting and intermediate-acting insulins. This combination allows for a more controlled release of insulin, mimicking the body's natural insulin response more closely. Humulin M3 is typically administered through injections and is used to manage blood sugar levels throughout the day, helping to prevent the spikes and drops that can occur with meals and overnight. It is essential for individuals with diabetes to maintain their blood sugar levels within a target range to prevent complications associated with the condition, and Humulin M3 plays a crucial role in achieving this balance.