MK2866, also known as Ostarine or S22, is a selective androgen receptor modulator (SARM) [1]. It has been found to have anabolic effects on skeletal muscle and bone tissue, making it a potential treatment for conditions such as osteoporosis and muscle wasting [1]. However, its use as a performance-enhancing drug is prohibited in sports due to its ability to increase muscle mass and strength [2]. There is limited research on the effects of MK2866 in humans, and its long-term safety and efficacy have not been established [3].
Beginners guide to Ostarine

CAS: 841205-47-8
Molecular Weight: 389.33 g/mol
Chemical formula: C₁₉H₁₄F₃N₃O₃
Chemical name: (2S)-3-(4-cyanophenoxy)-N-[4-cyano-3-(trifluoromethyl)phenyl]-2-hydroxy-2-methylpropanamide


  • Increases muscle mass
  • Improves bone density
  • Boosts athletic performance
  • Helps with injury recovery


  • Can cause mild testosterone suppression
  • May cause nausea in some users

MK 2866 For Sale

Our list of verified sources for Ostarine provides you with reliable and high-quality sources for purchasing Ostarine, a popular SARM used for building lean muscle mass and improving overall athletic performance. As you may already know, finding trustworthy sources in the industry can be challenging, which is why our team has taken the time to thoroughly vet each and every one of these sources. We ensure that they provide high-quality Ostarine products and safe and discreet shipping. Our goal is to help you achieve your fitness goals safely and effectively by providing you with the best information possible.

Ostarine from Chemyo

Chemyo Best Value [50ml bottle]

50ml of liquid ostarine solution at 25mg/ml. Use code sarmsdotio for 10% off your entire purchase at Chemyo!
Ostarine from Sports Technology Labs

Sports Technology Labs

30ml of liquid ostarine solution at 25mg/ml. Use code sarmsdotio for 15% off your entire purchase at STL!
MK 2866 from Paradigm Peptides

Paradigm Peptides Capsules

60 capsules at 12.5mg each = 750mg total
Ostarine from Science.bio

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Pre-orders are live at Science.bio. Use code christopher10 to save 10% off your entire order.

You can view the full list of verified sources here