Ibutamoren, more commonly known as “MK-677”, is the most powerful and potent orally administered growth hormone secretagogue, when it comes to selective androgen receptor modulators, also known as “SARMs”. Simply put, a secretagogue is a substance that chemically signals the pituitary gland to increase secretion of growth hormone MK-677 could be compared to peptides like GHRP-6 or Ipamorelin, only it doesn’t require any injections, nor does it have similar side effects. Originally developed by Reverse Pharmacology, MK-677 aimed to combat conditions like muscle wasting, obesity, osteoporosis, and, oddly enough, the treatment of elderly hip fracture patients.