Ostarine (MK-2866) 10 mg is an oral preparation containing 10 mg of ostarine per tablet or capsule. Ostarine, also known as enobosarm, is classified as a Selective Androgen Receptor Modulator (SARM). It was developed for investigational medical use and is not approved for general therapeutic use in many countries.
Active Ingredient
Ostarine (MK-2866 / Enobosarm) is a non-steroidal compound designed to selectively bind to androgen receptors in muscle and bone tissue. Unlike traditional anabolic steroids, SARMs are structured to target specific tissues while aiming to reduce activity in others.
Composition
Each tablet or capsule typically contains:
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Ostarine (MK-2866) – 10 mg
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Inactive ingredients such as fillers, binders, or capsule components
Exact excipients vary depending on the manufacturer.
Mechanism of Action
Ostarine selectively binds to androgen receptors, particularly in muscle and bone tissue. It has been studied for its potential to support lean body mass and physical function in certain clinical conditions involving muscle wasting. Its selective design aims to reduce some androgenic effects seen with traditional anabolic steroids.
Development and Research Context
Ostarine has been investigated in clinical trials for conditions such as muscle wasting, osteoporosis, and other catabolic disorders. However, it has not received widespread regulatory approval as a prescription medication for general use.




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