For laboratory research use only. Not for human consumption. Sold by Explicit SARMs solely as reference material for in-vitro and animal research by qualified professionals. Not evaluated by the FDA and not intended to diagnose, treat, cure or prevent any disease.
Key facts: Ostarine MK-2866 Capsules
- Contents: 90 capsules per bottle, 10mg per capsule
- Testing: Our manufacturer tests it twice during production, and we use an independent third-party lab for purity testing.
- Price: $80.00 as of November 2026
For laboratory research use only.
Ostarine has more names than most compounds: MK-2866, GTx-024 and the INN enobosarm. They all refer to CAS 841205-47-8, formula C19H14F3N3O3, molecular weight 389.3. It is a nonsteroidal aryl-propionamide androgen receptor ligand, and it has the deepest clinical record of any SARM.
This is the ostarine MK-2866 for sale from Explicit SARMs, supplied as 90 capsules per bottle and third-party lab tested. For a longer walk through the published trials, read our ostarine research review. If your work is on PPAR-delta rather than the androgen receptor, see GW-501516 cardarine capsules.
The clinical record in brief
GTx ran a double-blind phase II trial in 120 healthy older men and postmenopausal women, published by Dalton et al. in 2011 (J Cachexia Sarcopenia Muscle, PMID 22031847). The trial reported dose-dependent changes in lean body mass and a stair-climb measure of physical function. A second phase 2 study in patients with cancer followed (Dobs et al., Lancet Oncol 2013, PMID 23499390).
Then came the two phase 3 POWER trials in non-small cell lung cancer patients (NCT01355484, NCT01355497). GTx announced in August 2013 that the trials did not hit the endpoints it needed for approval, and enobosarm was never approved for that use. The compound was later repositioned toward AR-positive breast cancer research.
On the preclinical side, Roch et al. (Front Endocrinol 2020, PMID 33042018) compared ostarine and ligandrol in ovariectomized rats and reported effects on muscle tissue parameters. Detection-method papers from anti-doping labs, such as Thevis and Schänzer (2018, PMID 28137616), are useful if you need validated analytical references.
More detail and the full reference list: Ostarine (MK-2866) Research Review.
Specifications
- Compound: ostarine / enobosarm (MK-2866, GTx-024)
- CAS: 841205-47-8
- Formula / MW: C19H14F3N3O3 / 389.3
- Format: 90 capsules, 10mg per capsule
- WADA: enobosarm is named in S1.2 and prohibited at all times
Where it comes from
We buy from US domestic manufacturing partners, and our manufacturer tests the raw ingredient when it arrives at the lab and tests again after processing, and we use an independent third-party lab for purity testing. Quote the lot number printed on your bottle.
FAQ
Is ostarine the same as MK-2866?
Yes. MK-2866, GTx-024, enobosarm and ostarine are the same molecule.
How much does ostarine cost, and where can I buy it?
As of November 2026, Ostarine MK-2866 from Explicit SARMs costs $80 for a bottle of 90 capsules at 10mg each, and you can order directly on this page. US orders of $100 or more ship free, and orders placed before 2 PM ET, Monday to Friday, ship the same day. Sold for laboratory research use only.
Is ostarine FDA approved?
No. Its phase 3 program in cancer patients did not lead to approval.
Why is ostarine sometimes called the most studied SARM?
It has published phase 2 data and two registered phase 3 trials, more than any other compound in the class.
What should I check on the COA?
Identity by mass (about 389.3), purity by HPLC, and the lot number matching your bottle.
Is it for human consumption?
No. Laboratory research use only.
Who tests Ostarine MK-2866?
Our manufacturer tests Ostarine MK-2866 twice during production, and we use an independent third-party lab for purity testing.
What payment methods does Explicit SARMs accept?
We accept debit and credit cards, Zelle, Cash App, and ACH bank transfer.
Does Explicit SARMs ship internationally?
Yes. We ship within the United States, to Canada, and to other countries where local regulations allow the product. Available destinations and shipping options are shown at checkout.
For laboratory research use only. Not for human consumption. Sold by Explicit SARMs solely as reference material for in-vitro and animal research by qualified professionals. Not evaluated by the FDA and not intended to diagnose, treat, cure or prevent any disease.
Sizes and prices
| Product | Size / format | Price |
|---|---|---|
| Ostarine MK-2866 Capsules | 10mg per capsule | $80.00 |
| MK-2866 Liquid | Liquid | $80.00 |
Prices as of November 2026.
