Peptide Science USA - Somatropin Injection is a synthetic form of human growth hormone (HGH) used to treat growth hormone deficiencies in both children and adults. It helps promote growth, improve bone density, increase muscle mass, and reduce body fat. Somatropin is commonly prescribed for conditions like growth hormone deficiency, Turner syndrome, and Prader-Willi syndrome, as well as for some cases of muscle wasting or short stature. It is administered via subcutaneous injection and typically prescribed by healthcare professionals.