Headon Injection contains somatropin, a synthetic form of human growth hormone, which is used to treat growth hormone deficiencies. It plays a crucial role in stimulating growth in children with various growth disorders and helps in the maintenance of muscle mass and bone density in adults. The injection is administered either subcutaneously or intramuscularly, and it is important that it be dosed carefully under the guidance of a healthcare professional. Common side effects may include injection site irritation, headaches, and swelling, and regular health monitoring is necessary for a safe and effective treatment regime. Each package includes one vial of somatropin, delivering 4 International Units (IU).