MK2866

MK-2866, also known as Ostarine or Enobosarm, is a selective androgen receptor modulator (SARM). It was developed to create anabolic effects in tissues such as muscle while being more selective than traditional androgens, making lean muscle and body composition its main areas of interest.

MK-2866 selectively stimulates androgen signalling in tissues including muscle. In practical terms, this creates an anabolic signal that can increase lean body mass. Controlled human trials have demonstrated increases in lean mass, with some research also showing improvements in measures of physical function.

MK-2866 is primarily associated with lean muscle and body-composition goals rather than simply increasing overall body weight. This also explains its interest during cutting-focused phases, where preserving lean tissue while reducing body fat is usually a priority.

Muscle preservation is one of the main reasons MK-2866 has been researched. In a Phase 2 trial involving people experiencing cancer-related muscle loss, participants receiving enobosarm recorded significant increases in lean body mass, providing human evidence for its ability to preserve or increase lean tissue.

Both are SARMs designed to produce anabolic effects in muscle, but they are different compounds with separate clinical research. MK-2866 has been studied extensively for maintaining and increasing lean mass, while LGD-4033 has also demonstrated dose-dependent lean-mass gains in healthy young men. Customers typically compare them when considering different muscle and body-composition options.

Human trials have monitored changes in areas including liver enzymes, cholesterol and hormones, and later clinical research has reported elevated liver enzymes in some participants. Rare case reports of liver injury have also been published, so MK-2866 should not be assumed to have the same safety profile as an ordinary sports supplement.

Orders are packed discreetly and shipped within Australia via Australia Post Express, with tracking provided once your order has been dispatched.

Orders are dispatched within one business day and sent via Australia Post Express, with delivery usually taking 2–3 business days.