Humulin is a brand name for insulin, a hormone that is used to regulate blood sugar levels in people with diabetes. There are several different types of Humulin, including Humulin N, Humulin 70/30, Humulin 28, Humulin 30, and Humulin 30 U/ml.

Humulin is a man-made version of the insulin that is naturally produced by the pancreas. It works by helping the body absorb glucose (sugar) from the blood and use it for energy, or store it for later use. Humulin is typically administered through injections and is available in different forms, such as vials, pre-filled pens, and inhalers.

Humulin is usually prescribed to people with type 1 diabetes, who do not produce any insulin, and people with type 2 diabetes, who do not produce enough insulin or are unable to use it effectively. It is important to follow the dosing instructions provided by your healthcare provider and to monitor your blood sugar levels regularly while using Humulin.

Common side effects of Humulin include hypoglycemia (low blood sugar), weight gain, and allergic reactions. It is important to inform your healthcare provider of any other medical conditions you have, such as liver or kidney disease, as these may affect your response to Humulin.