A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.
Naturally occurring growth hormone (somatotropin) is synthesized and stored in the anterior pituitary gland in the brain. Its release is controlled by opposing actions of growth-hormone releasing hormone and somatostatin.
Growth hormone promotes the growth of long bones in the limbs and increases protein synthesis. A synthetic version of growth hormone, somatropin, is available to treat disorders of growth hormone production or deficiency. It is used to treat growth failure in children.
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