MK 677 Ibutamoren, MK-667, MK-677, MK677

How Does MK-677 Work? Mechanism of Action MK-677 works by stimulating the ghrelin receptors in the brain, which in turn signals the pituitary gland to release more growth hormone. This process increases the secretion of growth hormone (GH) and insulin-like growth factor 1 (IGF-1), both of which play critical roles in muscle growth, fat metabolism,…