Humatrope is one of the most famous brand names for the synthetically man made Human Growth Hormone (HGH) and is among the most known and used somatotropin products in the world. The product is mainly used to replace the natural HGH, which is naturally produced in the human body by the pituitary gland. Also, this product got really famous in the world of bodybuilding and competitive athletes for its properties to offer huge muscle mass growth and other athletic benefits.