A practical reference on GW501516: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
This page was last updated on 2025-10-24 and is reviewed periodically as new material appears.
PPARδ is a nuclear receptor that influences transcription of genes involved in fatty acid oxidation, lipid transport, and energy homeostasis. GW501516 binds and activates this receptor with high selectivity relative to PPARα and PPARγ in laboratory assays. Activation alters expression of target genes in skeletal muscle, liver, and adipose tissue in animal models. The exact clinical consequences of these changes in humans remain incompletely characterized, and observed effects in animals do not establish therapeutic benefit or safety.
Published studies have examined GW501516 in animal models of obesity, insulin resistance, and exercise endurance. Early human trials reportedly ended, and development was discontinued after preclinical findings raised concerns about cancer in some rodent studies. Regulatory agencies have not approved cardarine for any medical use. Its availability through non-pharmaceutical channels raises questions about identity, purity, and legal status that are separate from its laboratory pharmacology. Those questions are often addressed through analytical testing rather than assumptions about product labels.
Cardarine is the common name for GW501516, a synthetic compound studied as a peroxisome proliferator-activated receptor delta agonist. Researchers developed it to explore treatments for lipid disorders and metabolic conditions. It is not an approved medicine in any country. Early clinical work examined changes in HDL cholesterol and triglycerides, but development was discontinued after animal studies raised concerns about cancer. The compound remains available as a research chemical and appears in discussions of performance enhancement.
At the molecular level, GW501516 binds and activates PPARδ, a nuclear receptor that regulates transcription. Activation shifts expression of genes involved in fatty acid oxidation, energy expenditure, and lipid transport in skeletal muscle and liver. Animal studies report increased endurance and altered lipid profiles after exposure. Human data are limited to small trials and do not establish long-term safety or efficacy. PPARδ also has roles in cell proliferation, so the relationship between activation and cancer risk remains an open question.
| Property | Value | Notes |
|---|---|---|
| Chemical class | PPARδ agonist | Not an anabolic steroid. |
| Common synonyms | GW501516, GW-1516 | Cardarine is an informal name. |
| Appearance | White to off-white powder | Typical for research-grade solid. |
| Solubility class | Poorly soluble in water; soluble in some organic solvents | Such as DMSO or ethanol in laboratory settings. |
| Typical storage temperature | Cool, dry, protected from light | Specific conditions vary by supplier and form. |
Cardarine is a common name for GW501516, a synthetic compound developed in the 1990s through research collaborations involving GlaxoSmithKline. It belongs to a class of molecules known as peroxisome proliferator-activated receptor delta agonists. Early studies explored its effects on lipid metabolism and energy expenditure in animal models. The compound was never approved as a human medicine, and clinical development was discontinued. In the years since, it has appeared in fitness and bodybuilding communities as a performance-enhancing substance. Regulatory agencies classify it as an unapproved drug.
PPARδ is a nuclear receptor that regulates gene expression related to fatty acid oxidation, glucose homeostasis, and mitochondrial function. GW501516 binds to this receptor with high affinity and activates downstream signaling in skeletal muscle and other tissues. Animal studies reported increased endurance and altered fuel preference, but human data remain limited and inconsistent. The precise relationship between receptor activation and observed physiological changes is still an area of active investigation. Researchers have also examined whether the compound affects inflammation or cell proliferation. No approved therapeutic indication exists for cardarine.
In laboratory settings, cardarine is studied as a tool compound for probing PPARδ biology. Published experiments often use cell cultures, rodent models, or isolated tissues. Some investigations focus on metabolic effects, while others assess potential risks such as carcinogenicity observed in long-term animal studies. Because human trials are sparse, most knowledge comes from preclinical work and adverse event reports. Scientific literature frequently notes the gap between animal findings and human outcomes. The compound is not a dietary supplement and is not intended for human consumption.
Regulatory treatment varies, but cardarine is not approved as a medicine. Sports authorities list GW501516 as a prohibited substance, and it is banned at all times under the World Anti-Doping Agency code. Many countries restrict sales for human consumption, while online vendors market it as a research chemical. Such products may lack purity data, and their actual contents can differ from the label. Purchasing or possessing cardarine may carry legal consequences depending on jurisdiction. The compound is not a dietary supplement ingredient in regulated markets.
Clinical development stopped after rodent studies showed tumors at multiple sites. Whether those findings predict human cancer risk remains an open question, but they led sponsors to discontinue programs. Human safety data are limited to small, short-term studies that were not designed to assess cancer risk. Reported effects in those studies included changes in blood lipids, but the evidence is insufficient for medical use. Long-term consequences of nonmedical use are not well characterized. Questions about dose, duration, and individual susceptibility remain unresolved.
{\displaystyle {\begin{aligned}{\frac {\partial f(t,j)}{\partial t}}&=2k_{+}m(t)f(t,j-1)-2k_{+}m(t)f(t,j)\\&+2k_{\rm {off}}f(t,j+1)-2k_{\rm {off}}f(t,j)\\&+k_{-}\sum _{i=j+1}^{\infty }f(t,i)-k_{-}(j-1)f(t,j)\\&+k_{1}m(t)^{n_{1}}\delta _{j,n_{1}}+k_{2}m(t)^{n_{2}}M(t)\delta _{j,n_{2}}\\\\\end{aligned}}}
==== Lymphatic system ==== The circulatory system processes an average of 20 litres of blood per day through capillary filtration, which removes plasma from the blood. Roughly 17 litres of the filtered blood are reabsorbed directly into the blood vessels. The lymphatic system provides an accessory return route to the blood for the remaining three litres of interstitial fluid.
Obesity increases the risk of many physical and mental conditions. These comorbidities are most commonly shown in metabolic syndrome, a combination of medical disorders which includes: diabetes mellitus type 2, high blood pressure, high blood cholesterol, and high triglyceride levels. The CDC has found that obesity is the single strongest risk factor for severe COVID-19 illness. Complications may be either directly caused by obesity or indirectly related through mechanisms sharing a common cause such as a poor diet or a sedentary lifestyle. The strength of the link between obesity and specific conditions varies. One of the strongest is the link with type 2 diabetes. Excess body fat underlies 64% of cases of diabetes in men and 77% of cases in women. Health consequences fall into two broad categories: those attributable to the effects of increased fat mass (such as osteoarthritis, obstructive sleep apnea, social stigmatization) and those due to the increased number of fat cells (diabetes, cancer, cardiovascular disease, non-alcoholic fatty liver disease). Increases in body fat alter the body's response to insulin, potentially leading to insulin resistance. Increased fat also creates a proinflammatory state, and a prothrombotic state.
Sources: en.wikipedia.org
After Constantinople fell, the Ottomans quickly absorbed the remaining independent territories, including Acciaiuoli Athens in 1458, Morea in 1460, Trebizond in 1461, and Gattilusi Lesbos in 1462. They dismantled the Empire's political and secular institutions, leaving the impoverished Church to manage what would be later called the Rum Millet, primarily as a tool for taxing its followers. As the sole sovereign Orthodox state, Russia developed the Third Rome doctrine, emphasising its cultural heritage as distinct from Western Europe, because the latter had inherited much of the empire's secular learning. The Danubian Principalities became a haven for Orthodox Christians and Phanariot Greeks who sought to recreate a Byzantine Greek Empire. In modern Greece, members of the Rum Millet increasingly identified as Greeks, eventually leading to a successful war of independence in the 19th century. The modern Greek state nearly doubled its territory through the pursuit of the Megali Idea—a vision of reclaiming the former lands of the eastern empire—achieving limited success during the Crimean War but making significant gains during the Balkan Wars. Since the 15th century, Byzantine history has been deeply politicised, woven into nationalist, colonialist, and imperialist narratives. This politicisation appears not only in Greece but also in Bulgarian, Romanian, Serbian, Hungarian, and Turkish nationalism, as well as in former French and Russian imperialist agendas.
Derived structure parameters that describe constant properties of the overall feedback control system may add useful information for special purposes, e.g. in diagnosis of nonthyroidal illness syndrome or central hypothyroidism.
A single dose of LSD (Definium Therapeutics's DT120 candidate) markedly reduced major depressive disorder symptoms versus placebo in a Phase 3 trial, with benefits lasting at least 12 weeks and no major safety concerns. LSD is a psychoplastogen, a compound capable of promoting rapid and sustained neural plasticity, an action that hypothetically might be involved in its therapeutic benefits. Preliminary evidence in humans suggests that a single dose of LSD may also temporarily benefit learning and memory. More research is needed to substantiate such notions. The British critical psychiatrist Joanna Moncrieff has critiqued the use and study of psychedelics like LSD for treatment of psychiatric disorders, highlighting concerns including excessive hype around these drugs, questionable biologically-based theories of benefit, blurred lines between medical and recreational use, flawed clinical trial findings, financial conflicts of interest, strong expectancy effects and large placebo responses, small and short-term benefits over placebo, and their potential for difficult experiences and adverse effects, among others.
Sources: en.wikipedia.org
=== Pharmacokinetics === Escitalopram is a substrate of P-glycoprotein and hence P-glycoprotein inhibitors such as verapamil and quinidine may improve its blood-brain barrier penetrability. In a preclinical study in rats combining escitalopram with a P-glycoprotein inhibitor, its antidepressant-like effects were enhanced.
Born: Kim Jong Un, Supreme Leader of North Korea since the 2011 death of his father, Kim Jong Il, and General Secretary of the Workers' Party of Korea since 2012; in Pyongyang Khaled bin Mohamed Al Nahyan, Crown Prince of Abu Dhabi, son of Mohamed bin Zayed Al Nahyan and grandson of Zayed bin Sultan Al Nahyan, President of the United Arab Emirates; in Abu Dhabi Died: Reta Shaw, 69, American character actress in film and television, known for Mary Poppins Sidney Robinson Jr., 79, American physiologist and former Olympic athlete known for his research into developing uniforms to minimize thermal stress on the human body Lucille Lee Stewart, 92, American silent film actress
=== Lab findings === The best predictors of cirrhosis are ascites, platelet count < 160,000/mm3, spider angiomata, and a Bonacini cirrhosis discriminant score greater than 7 (as the sum of scores for platelet count, ALT/AST ratio and INR as per table).
== Definition == Riboflavin, also known as vitamin B2, is a water-soluble vitamin and is one of the B vitamins. Unlike folate and vitamin B6, which occur in several chemically related forms known as vitamers, riboflavin is only one chemical compound. It is a starting compound in the synthesis of the coenzymes flavin mononucleotide (FMN, also known as riboflavin-5'-phosphate) and flavin adenine dinucleotide (FAD). FAD is the more abundant form of flavin, reported to bind to 75% of the number of flavin-dependent protein encoded genes in the all-species genome (the flavoproteome) and serves as a co-enzyme for 84% of human-encoded flavoproteins. In its purified, solid form, riboflavin is a yellow-orange crystalline powder with a slight odor and bitter taste. It is soluble in polar solvents, such as water and aqueous sodium chloride solutions, and slightly soluble in alcohols. It is not soluble in non-polar or weakly polar organic solvents such as chloroform, benzene or acetone. In solution or during dry storage as a powder, riboflavin is heat stable if not exposed to light. When heated to decompose, it releases toxic fumes containing nitric oxide.
Sources: en.wikipedia.org
Cardarine is commonly known as GW501516 or GW-1516. These names refer to the same synthetic compound. It is not a brand-name approved medicine.
No, cardarine is not a steroid. It is classified as a PPARδ agonist. Its structure and receptor target differ from anabolic steroids.
No regulatory agency has approved cardarine as a medicine. It was investigated in early research but development was discontinued. It is not available as a prescription drug.
Cardarine is a common name for the investigational compound GW501516. It acts as a PPARδ agonist and is not approved for human use. It is prohibited in sport.