MK 677
MK677, also known as Ibutamoren, is a non-peptide growth hormone secretagogue that stimulates the release of growth hormone and insulin-like growth factor 1 (IGF-1) in humans [1]. It binds to the ghrelin receptor, which is present in the brain and other tissues, and increases the secretion of growth hormone [1][3]. MK677 has been shown to have positive effects on body composition, increasing lean body mass and decreasing fat mass, as well as improving bone density and muscle strength [1]. It has also been suggested to have cognitive-enhancing effects, potentially contributing to the modulation of senile cognitive decline [2]. However, more research is needed to confirm these effects. MK677 has been well-tolerated in clinical trials, with few reported side effects [1].

MK 677 / Ibutamen: Beginners Guide by

CAS: 159634-47-6
Molecular Weight: 624.77 g/mol
Chemical formula: C27H36N4O5S
Chemical name: 2-amino-2-methyl-N-[1-(1-methylsulfonylspiro[2H-indole-3,4′-piperidine]-1′-yl)-1-oxo-3-(phenylmethoxy)propan-2-yl]propanamide
Type: Growth Hormone Secretagogue


  • Stimulates growth hormone production
  • Enhances muscle growth and recovery
  • Improves sleep quality and duration
  • Boosts cognitive function and mood


  • May cause increased appetite
  • Potential for water retention and bloating

MK 677 For Sale

Explore our carefully selected MK 677 sources, chosen for their outstanding products and secure delivery. Benefit from our expertise as we help you unlock the potential of Ibutamoren, renowned for its muscle growth and recovery-boosting properties. Embark on your fitness transformation with the assurance of top-notch providers in the industry.

Biaxol Supplements Ibutamoren MK 677 Capsules

Biaxol Supplements 💳 PAY WITH CREDIT CARD

60 capsules of pure MK 677 at 10mg per capsule = 600mg total! Use code sarmsio for 10% off!
Sports Technology Labs GW 501516

Sports Technology Labs

30ml of liquid MK-677 solution at 25mg/ml. Use code sarmsdotio for 15% off your entire purchase at STL!
Paradigm Peptides MK 677

Paradigm Peptides

60 capsules at 12.5mg each = 750mg total
Ibutamoren from Chemyo

Chemyo Great Value

50ml of liquid Ibutamoren solution at 25mg/ml (1250mg total). Use code sarmsdotio for 10% off your entire purchase at Chemyo!
600mg Liquid Cardarine solution from They're Back!

Pre-orders are live at Use code christopher10 to save 10% off your entire order.
Behemoth Labz liquid GW-501516

Behemoth Labz

Use code BHM31 for 10% off your entire purchase at Behemoth Labz!


  1. Hansen, Raun, Nielsen, Johansen, Hansen, Peschke, … & Ankersen (1999). Pharmacological characterisation of a new oral GH secretagogue, NN703. Acta Endocrinologica, 180-189.
  2. Mauri, Simonetti, Gardana, Minoggio, Morazzoni, Bombardelli, … & Pietta (2001). Liquid chromatography/atmospheric pressure chemical ionization mass spectrometry of terpene lactones in plasma of volunteers dosed withGinkgo biloba L. extracts. Rapid Commun. Mass Spectrom., 12(15), 929-934.
  3. Ankersen, Johansen, Madsen, Hansen, Raun, Nielsen, … & Andersen (1998). A New Series of Highly Potent Growth Hormone-Releasing Peptides Derived from Ipamorelin. J. Med. Chem., 19(41), 3699-3704.