Home›SARMs & SELECTIVE METABOLIC AGENTS›Ostarine (MK-2866, Enobosarm)

Ostarine (MK-2866, Enobosarm)

Evidence: ★★★☆☆ · Status: Not Approved

💡 Did you know? SARMs were designed to hit muscle's androgen receptors while sparing the prostate — but they still shut down your natural testosterone.

In plain English

The "beginner" SARM — mild muscle/bone gains with fewer steroid-like side effects, but still suppresses your own testosterone and can raise liver enzymes.

How it works

Moderate-potency non-steroidal AR agonist selective for muscle and bone; the most clinically studied SARM (cancer-cachexia trials).

Molecular target & official sources

AR (NCBI Gene) · Enobosarm (PubChem CID 11326715)

Watch out

HPTA suppression, liver injury cases, positive drug tests.

Helps with: Build Muscle & Strength · Hormones & Testosterone · Bone Health

Stacks with

Shares a pathway — often paired with: Omega-3 (EPA/DHA), Vitamin D3 (+ K2), Testosterone (TRT), Finasteride / Dutasteride.

Availability & where to buy

Not widely approved. Not approved for general sale in most markets (Singapore included). Grey-market only — dose, purity and legality uncertain.

How it works: the Nuclear receptors pathway →

Common questions

Does Ostarine (MK-2866, Enobosarm) actually work?

Human-evidence rating: 3 of 5. The "beginner" SARM — mild muscle/bone gains with fewer steroid-like side effects, but still suppresses your own testosterone and can raise liver enzymes.

What are the risks or side effects of Ostarine (MK-2866, Enobosarm)?

HPTA suppression, liver injury cases, positive drug tests.

Is Ostarine (MK-2866, Enobosarm) legal or approved?

Regulatory status: Not Approved.