SARMS® – SR9009 64 mg (Stenabolic)

SR9009, also known as Stenabolic, is a REV-ERB agonist rather than a true selective androgen receptor modulator (SARM). It is primarily associated with effects on metabolism, endurance, and energy expenditure through regulation of circadian rhythm and mitochondrial activity.

How It Works

SR9009 activates the REV-ERBα receptor, which plays a role in regulating circadian rhythm, lipid metabolism, and energy balance. This activation may increase metabolic rate, enhance fat oxidation, and improve endurance capacity by influencing mitochondrial function and energy utilization. It does not act on androgen receptors.

Dosage Overview

Typical dosing ranges from 10–30 mg per day, often split into multiple doses due to its short half-life (approximately 4–6 hours). Some users divide dosing throughout the day (e.g., every 4–6 hours) to maintain more stable exposure. It is taken orally and commonly used in cutting or endurance-focused phases.

Potential Benefits

SR9009 is associated with improved endurance, increased fat oxidation, enhanced metabolic activity, and better exercise performance. It may also support recovery and overall energy utilization during training, particularly in calorie deficit phases.

Side Effects and Considerations

SR9009 is generally considered non-hormonal and is not known to suppress testosterone or require post-cycle therapy. However, reported side effects may include mild nausea, fatigue, or sleep disturbances in some users. Due to limited human research and its short activity window, long-term safety and optimal protocols remain not fully established.