Product guide · Restricted substance
Bio Molecule Ostarine (MK-2866) 15 mg, 60 caps
Research compound from Bio Molecule, 60 capsules. This guide sets out what the manufacturer states about the composition of Bio Molecule Ostarine (MK-2866) 15 mg, 60 caps, what independent research says about its main ingredient, and the safety and regulatory points that apply. It contains substances that are not authorised as food or medicine in the EU. This guide is educational: it does not recommend use and gives no directions for use.
Back to the product- Named ingredients
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- Amounts stated
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- Status
- Restricted substance
- Evidence summaries
- 1
Overview
Manufacturer informationBio Molecule Ostarine (MK-2866) 15 mg, 60 caps contains ostarine (MK-2866): 15 mg per capsule. Each pack holds 60 capsules.
Ingredients & composition
Manufacturer information| Ingredient | Amount |
|---|---|
| Ostarine (MK-2866) | 15 mg per capsule |
Scientific background
Independent researchOstarine (MK-2866, enobosarm)
Ostarine (also called MK-2866, GTx-024 or enobosarm) is a selective androgen receptor modulator developed as an investigational drug for muscle wasting1. OTR-AC is marketed as an acetylated (ester) form of ostarine; no human research on it has been published.
Research evidence
Independent researchOstarine (MK-2866, enobosarm)
A phase 2 trial in healthy older men and postmenopausal women found a dose-dependent increase in lean body mass and physical function over 12 weeks1. A phase 2 trial in people with cancer reported improved lean body mass2. These are clinical-development studies in specific patient groups, not studies of sports or bodybuilding use.
Evidence limitations
Independent researchNo published study has tested this specific product; the research summarised here concerns the ingredient itself.
Ostarine (MK-2866, enobosarm)
Phase 2 results do not establish efficacy or long-term safety, and the compound has not been approved as a medicine. Analyses of products sold online as SARMs found that many did not contain the substance or amount stated on the label, and some contained other unapproved drugs3.
Safety & potential risks
Independent researchRegulatory status
Contains ostarine (MK-2866), a selective androgen receptor modulator (SARM). SARMs are investigational substances that are not authorised as medicinal products or as food (including food supplements) in the EU, and they are on the World Anti-Doping Agency (WADA) Prohibited List. No dosing information for human use is provided.
Scientific references
- Dalton JT, Barnette KG, Bohl CE, et al. The selective androgen receptor modulator GTx-024 (enobosarm) improves lean body mass and physical function in healthy elderly men and postmenopausal women: results of a double-blind, placebo-controlled phase II trial. J Cachexia Sarcopenia Muscle. 2011;2:153-161. PubMed 22031847
- Dobs AS, Boccia RV, Croot CC, et al. Effects of enobosarm on muscle wasting and physical function in patients with cancer: a double-blind, randomised controlled phase 2 trial. Lancet Oncol. 2013;14:335-345. PubMed 23499390
- Van Wagoner RM, Eichner A, Bhasin S, et al. Chemical composition and labeling of substances marketed as selective androgen receptor modulators and sold via the internet. JAMA. 2017;318:2004-2010. PubMed 29183075
- Vasireddi N, Hahamyan HA, Gould HP, et al. Athlete selective androgen receptor modulators abuse: a systematic review. Am J Sports Med. 2025;53:999-1009. PubMed 39755947
- Nash E, Nicoll A, Batt N, et al. Drug-induced liver injury from selective androgen receptor modulators, anabolic-androgenic steroids and bodybuilding supplements in Australia. Aliment Pharmacol Ther. 2024;59:953-961. PubMed 38372012
- Directive 2001/83/EC on the Community code relating to medicinal products for human use. Official Journal of the European Union. Source
- Regulation (EU) 2015/2283 on novel foods. Official Journal of the European Union. Source
- Thevis M, Schänzer W. Detection of SARMs in doping control analysis. Mol Cell Endocrinol. 2018;464:34-45. PubMed 28137616
- World Anti-Doping Agency. The Prohibited List (current edition). Source
Sources checked against PubMed, Crossref or the official publisher on 2026-11-04. Manufacturer information is taken from the product's own data and has not been independently tested.
The product
Bio Molecule Ostarine (MK-2866) 15 mg, 60 caps
€49,90