SR9009, commonly known as Stenabolic, is a synthetic compound often categorized as a Rev-ErbA agonist. Unlike anabolic steroids, SR9009 does not directly increase muscle mass through hormonal pathways, but instead influences the body’s circadian rhythm, energy metabolism, and fat-burning processes. It was originally developed by Professor Thomas Burris at the Scripps Research Institute to study the role of Rev-ErbA proteins in regulating metabolism and sleep cycles.
How SR9009 Works
SR9009 binds to the Rev-ErbA receptor, which is involved in controlling:
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Mitochondrial activity – improving cellular energy production.
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Circadian rhythm – regulating the body’s sleep-wake cycles and metabolic functions.
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Fat metabolism – promoting the breakdown of stored fat for energy.
By stimulating these pathways, SR9009 mimics the effects of endurance exercise on the body, which is why it is often referred to as “exercise in a pill.”
Potential Benefits of SR9009
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Enhanced endurance – may improve stamina and workout performance.
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Increased fat loss – promotes fat oxidation and prevents fat storage.
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Improved metabolism – supports efficient use of energy and glucose regulation.
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Reduced cholesterol levels – may lower LDL (bad cholesterol) and triglycerides.
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Better recovery – reduces inflammation and muscle damage after training.
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Supports lean muscle preservation – may help maintain muscle mass while cutting fat.
Usage and Administration
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SR9009 is typically taken orally in capsule or liquid form.
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Half-life is very short (around 4–6 hours), so it is often dosed multiple times per day.
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Users commonly cycle SR9009 for 6–8 weeks.
(Note: SR9009 is still considered a research chemical, not an approved medication. Human clinical studies are limited.)
Possible Side Effects
While SR9009 is generally considered non-hormonal (does not suppress testosterone), possible concerns may include:
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Sleep disturbances (due to circadian rhythm influence).
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Mild fatigue in some users.
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Limited research on long-term safety.
Legal Status
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Not approved by the FDA or EMA for medical use.
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Classified as a research chemical, legal for laboratory research but not approved for human consumption.
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Banned by the World Anti-Doping Agency (WADA) in professional sports.




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