MK 2866 (Ostarine) - Dragon Pharma

Buy Ostarine 25 mg tablets by Dragon Pharma at XSteroids. Ostarine, also coded MK-2866 and known as enobosarm, is the best known selective androgen receptor modulator and the one with the longest human research record. Dragon Pharma supplies it as 25 mg tablets, 100 per pack. This guide covers what the trials show, ostarine dosage practice and the side effects the data actually documents.

Enobosarm is not approved for any use and is on the WADA prohibited list, so the information below is educational only.

About Ostarine (MK 2866) by Dragon Pharma

Ostarine is a nonsteroidal SARM that acts as an agonist of the androgen receptor - the same biological target as testosterone and DHT, but through a different molecule and with a different tissue profile.

It was developed by GTx and is now being developed by Veru, with active research in androgen receptor positive breast cancer and in protecting muscle for people using GLP-1 receptor agonists such as semaglutide. Development for cachexia, Duchenne muscular dystrophy, sarcopenia and stress urinary incontinence was discontinued, and no authority has approved it.

How Ostarine Works

Receptor Action and Research Scale

By binding the androgen receptor, ostarine drives androgen signalling in muscle and bone without relying on a steroid structure. The research base is unusually deep: 25 clinical studies, more than 1,700 people, doses from 1 to 100 mg - and still no approval.

How Long Ostarine Stays Active

Ostarine is metabolised by CYP3A4 and the UGT enzymes, and its glucuronide is the main metabolite. The elimination half-life is 14 to 24 hours, and excretion is mainly faecal. Interactions matter: rifampicin, a strong CYP3A4 inducer, cut peak levels by 23%, half-life by 23% and total exposure by 43%, which is a large change for a compound people take for weeks.

Ostarine Dosage and Cycle Practice

Dosing

Clinical work spans 1 to 100 mg, but the safety data sits at the low end. Non-medical use runs well above the trial doses, at 10 to 25 mg daily, which is why the 25 mg tablet is a single-unit dose rather than something to stack. As with any compound in this class, the dose should follow the blood work.

Cycle Length

Cycles typically run six to eight weeks. The relevant limits are the ones the data shows - lipids, liver enzymes and hormones - all of which move the wrong way with longer or heavier use, so blood work before, during and after is the only way to see what is happening.

Does Ostarine Suppress Testosterone?

Yes, and the numbers are specific. In healthy elderly men, total testosterone fell significantly at doses of 1 and 3 mg per day - by 31% and 57% respectively. Free testosterone, DHT, estradiol and gonadotropins were not affected to the same degree in that work, but total testosterone suppression is real, and it is the reason a recovery plan matters. A SERM such as Nolvadex or Clomid is the standard recovery tool, with blood work confirming that levels return.

Ostarine Side Effects and Precautions

Documented effects include headache, fatigue, anaemia, nausea, diarrhoea and back pain, plus decreased HDL with LDL unchanged, reduced testosterone, and elevated liver enzymes with liver toxicity reported. Masculinising effects in women have largely not been evaluated, and the consequences of high doses are unknown.

How Ostarine Compares to Other SARMs

Ostarine is the mildest and most studied of the group. LGD 4033 is stronger and more suppressive, S 23 is more aggressive still, and MK 677 works through a completely different mechanism as a growth hormone secretagogue. Cardarine (GW 501516) is not a SARM despite being sold alongside them, and YK 11 is a more experimental branch.

Storage Instructions

Store the tablets at room temperature in a dry place, away from direct light and moisture. Keep the pack sealed until use and always store it out of the reach of children.

Why Buy Ostarine from XSteroids?

At XSteroids you buy the Dragon Pharma Ostarine tablets directly from the brand catalog, with secure checkout, US domestic shipping in 3 to 6 days and international delivery in 12 to 26 days. Browse the full range on the Dragon Pharma brand page to complete your research protocol.