What HGH actually is

Human Growth Hormone (HGH) is a 191–amino-acid protein hormone naturally produced by the pituitary gland. It plays a major role in:

• Growth and development

• Muscle and bone maintenance

• Fat metabolism

• Tissue repair and recovery

• Overall metabolic regulation

Pharmaceutical HGH is recombinant human growth hormone (rhGH), which is identical to natural HGH and is not a peptide fragment—it’s a full protein hormone.

What people mean by “HGH peptides”

When someone says HGH peptide, they are usually referring to growth hormone–releasing peptides (GHRPs) or growth hormone secretagogues, which are short amino-acid chains that signal the body to release its own HGH.

These peptides do not contain HGH themselves. Instead, they act upstream by stimulating the pituitary.