MK-677 12.5mg 60 Oral Capsules

MK‑677, also known as Ibutamoren, is a potent oral growth hormone secretagogue that mimics the action of ghrelin to stimulate the natural release of growth hormone (GH) and insulin-like growth factor 1 (IGF‑1)—two hormones critical for muscle growth, fat metabolism, recovery, and overall vitality. Unlike synthetic GH injections, MK‑677 enhances the body’s own hormone production through the hypothalamic-pituitary axis, without shutting down natural output.

MK-677 purportedly functions in the following ways:

• Ghrelin Mimetic – MK‑677 binds to the ghrelin receptor (GHS‑R1a) in the hypothalamus and pituitary, stimulating the release of endogenous GH
• Stimulates GH Pulsatility – Enhances both the amplitude and frequency of growth hormone pulses, which leads to consistent elevation of IGF‑1
• Increases IGF‑1 Levels – IGF‑1, produced in the liver in response to GH, promotes anabolic growth, cellular regeneration, and neuroprotection
• Non-Suppressive – Unlike exogenous HGH, MK‑677 preserves the body’s natural production feedback mechanisms
• Oral Bioavailability – MK‑677 is taken once daily orally, with a long half-life (~24 hrs), making it ideal for compliance and consistent effect

Originally developed for treating GH deficiency and muscle wasting, MK‑677 has demonstrated substantial benefits in both young and elderly populations, including increased lean body mass, improved sleep architecture, enhanced tissue repair, and support for metabolic health and cognitive function. Its once-daily oral dosing, sustained hormone elevation, and non-suppressive action make it a popular choice for performance, anti-aging, and therapeutic applications.

MK‑677 is under research and is not approved for use as a pharmaceutical treatment in many countries. While human studies have demonstrated safety and efficacy in controlled doses, long-term effects require further research. Off-label use should be monitored by a knowledgeable healthcare provider.