Macimorelin

Macimorelin is a synthetic growth hormone secretagogue primarily utilized as a diagnostic tool for identifying Adult Growth Hormone Deficiency (AGHD). Unlike traditional diagnostic methods like the insulin tolerance test, Macimorelin offers a safer profile by significantly reducing the danger of hypoglycemia. It serves as an orally active ligand that interacts with the ghrelin receptor to trigger a natural surge in growth hormone levels, which is then measured through timed blood draws to assess pituitary function. Beyond its clinical use in diagnosis, Macimorelin is of horizontal interest for its potential therapeutic effects on body composition and metabolic health. By elevating growth hormone, it may facilitate fat loss, muscle preservation, and improved recovery. While it is FDA-approved for diagnostic purposes under the name Macrilen, its specialized nature means it is typically administered in a clinical setting rather than used as a routine fitness supplement.