GW501516 Raw Material Powder For Bodybuilding CAS:317318-70-0
GW501516, commonly known in fitness circles by its developmental code name "Cardarine," is a synthetic compound that occupies a controversial and often misunderstood space in the world of performance enhancement. As a raw material powder, it represents the pure, unadulterated chemical form of the substance, typically sourced for research purposes. This analysis will delve into the compound's nature, its proposed mechanisms, applications, and the significant risks associated with its use, particularly for bodybuilding.
What is GW501516?
GW501516 is a PPARδ (Peroxisome Proliferator-Activated Receptor Delta) agonist. It was originally developed in the 1990s by pharmaceutical giants GlaxoSmithKline (GSK) and Ligand Pharmaceuticals. Its initial purpose was therapeutic, aimed at treating metabolic diseases such as dyslipidemia, type 2 diabetes, and obesity by increasing the body's capacity to burn fats and improve cholesterol profiles.
However, during late-stage preclinical trials, alarming findings emerged. Studies conducted by GSK revealed that the compound caused rapid cancer development in multiple organs (liver, stomach, tongue, skin, and more) across all test subjects (mice and rats) at all dosages tested. This led to the immediate and permanent termination of its development for human medicinal use. It was never approved by any major regulatory body like the FDA or EMA.
(lab-based) research. Its appearance in the bodybuilding black market is a direct consequence of its potent, yet dangerous, pharmacological effects.
The primary feature of GW501516 is its selective and potent activation of the PPARδ receptor. This receptor is a key regulator of gene expression related to energy homeostasis. Its activation triggers a cascade of effects:
PPARδ activation upregulates genes involved in fat metabolism. It essentially reprogrammes skeletal muscle fibres to preferentially use fat as their primary fuel source, sparing glycogen. This is often described as "fat adaptation."
It stimulates the creation of new mitochondria (the powerhouses of the cell) within muscle cells, thereby increasing the cellular capacity for energy production.
It enhances insulin sensitivity and promotes the uptake of glucose into muscles, improving metabolic efficiency.
By increasing the number and efficiency of mitochondria and promoting fat utilisation, skeletal muscles can produce energy (ATP) more efficiently, drastically reducing fatigue and increasing endurance.
It is crucial to understand that GW501516 is a hormone, a SARM (Selective Androgen Receptor Modulator), or a steroid. It does not interact with androgen receptors. Its effects are purely metabolic.
Despite its abandoned medical status, the bodybuilding community has co-opted GW501516 for specific applications driven by its mechanism:
1.Extreme Endurance Enhancement: This is its most notable effect. Users report a dramatic, sometimes unbelievable, increase in stamina. This allows for longer, more intense training sessions, higher volume work, and significantly shorter recovery times between sets. For a bodybuilder, this can translate to accelerated muscle growth through the ability to inflict more mechanical stress on muscles per session.
2.Fat Loss and Cutting: By forcing the body to oxidise fats at a profoundly accelerated rate, it is considered a powerful cutting agent. Users aim to shed body fat aggressively while preserving lean muscle mass, especially when in a caloric deficit.
3.Recomposition: The combination of enhanced fat loss and improved workout performance allows some users to pursue body recomposition-simultaneously losing fat and gaining muscle-a process that is notoriously difficult for advanced athletes.
4.Cholesterol Management: A legitimate, research-backed effect is its ability to significantly lower LDL (bad) cholesterol and raise HDL (good) cholesterol, improving overall lipid profiles.
Dosage, Cycle, and Half-Life
Providing dosage guidelines for a non-approved, carcinogenic substance is ethically fraught. The following information is presented for educational awareness only and should not be construed as a recommendation.
In the illicit fitness community, typical dosages range from 10 mg to 20 mg per day. Due to its potency, some users start at the lower end (10 mg) to assess tolerance. The powder form is almost always suspended in a liquid solution (e.g., PEG-400) for volumetric dosing to achieve these precise, milligram-level amounts.
Cycles are typically kept short due to cancer risk concerns, often ranging from 6 to 8 weeks. Some users, dangerously, may extend this to 12 weeks. The shorter cycle is a misguided attempt to "mitigate" risk, though the long-term carcinogenic effects are not fully understood and likely dose- and duration-dependent.
●Half-Life: GW501516 has a relatively long half-life of approximately 16 to 24 hours. This means a single daily dose is sufficient to maintain stable blood plasma levels. Its effects on metabolism are sustained throughout the day.
PTC (Post-Therapy Care)
Unlike anabolic steroids or SARMs, GW501516 does not suppress the hypothalamic-pituitary-gonadal (HPG) axis. It does not cause endogenous testosterone shutdown. Therefore, a traditional Post-Cycle Therapy (PCT) protocol involving SERMs like Nolvadex or Clomid is to restore natural hormone production.
However, the concept of "PTC" here should be radically different. The primary concern is not hormonal recovery but . A user who has ingested a known carcinogen should consider:
1.Comprehensive Blood Work: This should go beyond standard hormone panels. Extensive testing, including full lipid panels, liver enzymes, and comprehensive metabolic panels, is advised.
2.Cancer Screening: Regular and vigilant health screenings (e.g., full body scans, organ-specific checks) become critically important, though the latency period for cancer development is unknown.
3.Liver Support: Despite not being liver-toxic in the traditional sense, supporting overall organ health with supplements like N-Acetyl Cysteine (NAC), TUDCA, and milk thistle may be considered, though their efficacy in preventing PPARδ-mediated carcinogenesis is zero.
4.Lifestyle Reinforcement: Adopting a diet rich in antioxidants and maintaining a healthy lifestyle is prudent, though again, it is no guarantee against the potential damage already initiated.
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GW501516,Cardarine,Endurobol,GSK-516 |
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| 317318-70-0 | |
| 453.49 | |
| C21H18F33S2 | |
|
Above 98% |
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GW501516 raw material powder represents a modern Faustian bargain in the pursuit of physical perfection. It offers a potent, non-hormonal pathway to dramatically enhanced endurance and rapid fat loss-arguably one of the most effective performance-enhancing compounds ever discovered from a functional standpoint.
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