Description
MK-2866, also known as Ostarine, is a selective androgen receptor modulator (SARM) developed to help with muscle wasting conditions. It’s popular in the fitness and bodybuilding community for its potential benefits in muscle growth, fat loss, and recovery.
Key Information:
Compound Name: MK-2866 (Ostarine, Enobosarm)
Category: SARM (Selective Androgen Receptor Modulator)
Developed by: GTx, Inc.
Purpose: Initially developed for conditions like osteoporosis and muscle-wasting diseases.
Legal Status: Not FDA-approved for human consumption; often sold as a research chemical.
Benefits (Anecdotal & Research-Based)
Promotes lean muscle growth
Enhances fat loss
Increases strength and endurance
Supports joint and bone health
Accelerates recovery from injuries
Dosage (Commonly Used in Research)
Beginners: 10-15mg/day
Intermediate: 20mg/day
Advanced: 25mg/day
Cycle Length: 6-12 weeks
Half-Life: ~24 hours (once-daily dosing is common)
Side Effects
Suppression of natural testosterone (mild to moderate)
Possible mood swings
Temporary decreases in libido
Potential liver strain at high doses
Post Cycle Therapy (PCT)
Since Ostarine may suppress testosterone, a mild PCT (e.g., Clomid or Nolvadex) is sometimes recommended after a cycle.