SR9009, commonly known as Stenabolic, is a synthetic compound often categorized among Selective Androgen Receptor Modulators (SARMs), though it functions differently by targeting the REV-ERB proteins involved in regulating circadian rhythms and metabolism. Developed by Professor Thomas Burris at the Scripps Research Institute, SR9009 has been primarily studied in animal models for its potential to enhance endurance, fat loss, and metabolic efficiency.
🔬 Mechanism of Action
SR9009 acts as an agonist of the REV-ERBα and REV-ERBβ proteins, which are integral to the body’s internal clock and metabolic processes. By activating these proteins, SR9009 may influence gene expression related to metabolism, potentially leading to increased mitochondrial activity and improved fat oxidation.
💪 Potential Benefits
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Enhanced Endurance: Animal studies have suggested that SR9009 can increase exercise capacity by promoting mitochondrial biogenesis in skeletal muscle.
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Fat Loss: Research indicates that SR9009 may improve metabolic efficiency, aiding in fat loss even without changes to diet or activity levels.
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Metabolic Regulation: By influencing circadian rhythms, SR9009 might help regulate glucose metabolism and fatty acid oxidation, potentially preventing excess glucose from converting into fat.
⚠️ Safety and Side Effects
The safety profile of SR9009 in humans remains unclear, as it has not been approved for human consumption by regulatory agencies. Some potential side effects reported include:
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Disrupted Sleep Patterns: Due to its influence on circadian rhythms, SR9009 may cause insomnia or altered sleep patterns.
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Liver Health Concerns: High doses of SR9009 have been associated with elevated liver enzymes in animal studies, suggesting potential hepatotoxicity.
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Gastrointestinal Issues: Some users have reported nausea, diarrhea, or abdominal discomfort, particularly at the start of a cycle.
Additionally, SARMs, including SR9009, have been linked to serious health risks such as heart attack, stroke, and liver damage.
📏 Dosage and Administration
SR9009 has a short half-life of approximately 2–4 hours, necessitating multiple daily doses. Typical dosing regimens include:
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Dosage: 20–30 mg per day, with some users going as high as 40 mg/day.
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Administration: Split into 3–4 doses per day (e.g., 10 mg before breakfast, lunch, workout, and evening).
It’s important to note that SR9009 is often marketed for “research purposes only” and is not intended for human consumption.
⚖️ Legal Status and Considerations
SR9009 is prohibited under the World Anti-Doping Agency (WADA) Prohibited List and has been seized at the border by the Australian Border Force as a prohibited import on multiple occasions. Its use is not authorized in Canada and may pose serious health risks such as heart attack, stroke, and liver damage




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