MK-677 (Ibutamoren) is a research compound known as a growth hormone secretagogue, which means it stimulates the natural production of growth hormone (GH) and IGF-1 without suppressing natural hormone levels. Originally studied for its potential in treating growth hormone deficiencies and muscle-wasting conditions, MK-677 has gained attention for its ability to support recovery, muscle preservation, and improved sleep quality. It is commonly used in research related to body composition and aging.

Note: MK-677 is a research chemical and is not approved for human consumption. For laboratory research use only.