Everything below concerns Preclinical research. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-06-20. Numbers and descriptions here follow the published literature rather than marketing material.
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 a common name for GW501516, also GW-1516, a synthetic compound developed as a peroxisome proliferator-activated receptor delta (PPARδ) agonist. It belongs to a class of agents that modulate gene transcription related to lipid and energy metabolism. The compound was studied in preclinical and early clinical research for metabolic and cardiovascular conditions, but it did not progress to approved therapeutic use. Its name appears in fitness and sports contexts despite not being approved as a drug.
Published literature on cardarine includes in vitro assays, rodent experiments, and a small number of human studies. Reports describe effects on exercise capacity and lipid metabolism in animals, while human evidence is sparse. Many online descriptions present the compound as a proven endurance aid, a claim not supported by regulatory approval or large clinical trials. Analytical studies focus on identifying the parent compound and its metabolites in biological samples. Important uncertainties include species differences, dose-response relationships, and the relevance of rodent tumor findings to humans.
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. |
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.
Cardarine is a common name for GW501516, an investigational compound developed in the 1990s for metabolic conditions. It acts as an agonist at peroxisome proliferator-activated receptor delta, a nuclear receptor involved in lipid and energy metabolism. The compound is frequently mislabeled as a selective androgen receptor modulator, or SARM, but its molecular target is different. GW501516 reached early clinical testing before development was discontinued. It has no approved therapeutic use in any country. The name cardarine is not a formal international nonproprietary name.
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.
=== Early democratic success and development === In Argentina, the Socialist Party was established in the 1890s, being led by Juan B. Justo and Nicolás Repetto, among others, becoming the first mass party in the country and in Latin America. The party affiliated itself with the Second International. Between 1924 and 1940, it was one of the many socialist party members of the Labour and Socialist International (LSI), the forerunner of the present-day Socialist International. In 1904, Australians elected Chris Watson as the first Prime Minister from the Australian Labor Party, becoming the first democratic socialist elected into office. The British Labour Party first won seats in the House of Commons in 1902. The French Socialist Party (PSF) was founded in 1902. The PSF came from the merger of the possibilist Federation of the Socialist Workers of France (FTSF), Jean Allemane's Revolutionary Socialist Workers' Party (POSR) and some independent socialist politicians like Jean Jaurès, who went on to become the party leader. Unlike the Socialist Party of France led by Jules Guesde, the PSF supported the principle of the alliance with the non-socialist left in the Bloc des gauches. Under pressure from the Second International, the two parties merged into the French Section of the Workers' International in 1905.
The Association for Molecular Pathology (abbreviated AMP) is a professional association of individuals serving patients through molecular diagnostics testing. Founded in 1995, the Association has more than 3,100 members in over 50 countries. Molecular diagnostics is one of the fastest growing fields of health care. Molecular genetic testing provides patients and their doctors with accurate diagnosis of a broad range of cancers, infectious diseases, and inherited conditions. By identifying the exact molecular genetic alterations or biomarkers in a patient’s specimen, molecular genetic testing can identify treatment targets for personalized precision medicine that have improved outcomes for many patients. AMP is a volunteer-driven organization that concentrates on providing educational opportunities to practitioners and the broader medical community, advocating for the profession and the molecular professional, and advancing clinical care through the publication of evidence-based practice guidelines. AMP members work in academic and community medical centers, private and public health laboratories, government agencies, and the diagnostic manufacturing industry. Its membership includes pathologists, clinical laboratory scientists, technologists, trainees (who receive free membership while in training), clinicians and other health care personnel, government employees involved in regulatory oversight, and individuals in the in vitro diagnostics and pharmaceutical industries.
== History == α-Methylfentanyl was discovered by a team at Janssen Pharmaceuticals in the 1960s. In 1976, it began to appear mixed with heroin, as an additive, and the mixture was sometimes also called "China White". It was first identified in the bodies of two drug overdose victims in Orange County, California, in December 1979, who appeared to have died from opiate overdose but tested negative for any known drugs of this type. Over the next year, there were 13 more deaths, and eventually the responsible agent was identified as α-methylfentanyl.
== Biotransformation == After the bite of Bungarus multicinctus the venom enters the bloodstream and enters the circulation and ends up in the central and peripheral nervous system. Since κ-bungarotoxin has a high affinity for nAChRs the venom will target the tissues rich in nAChRs. Together with its prolonged, potentially irreversible binding, there will not be much κ-bungarotoxin available in the bloodstream, but it will remain localized in the central nervous system and ganglia. Unbound nAChRs will only be available through de novo synthesis of these receptors. Though biotransformation of κ-bungarotoxin is not sufficiently researched, the long-chain three-finger toxins (3FTx) family member blocks ion channels on the postsynaptic membrane. Therefore, it is suggested that the toxin works extracellularly, and can thus not be biotransformed by the cytochrome P450 enzymes. κ-Bungarotoxin is a protein and can thus be gradually degraded by enzymes such as peptidases and lysosomes. The result will be smaller peptides and amino acids, which can be used for the synthesis of endogenous compounds. However, since the κ-bungarotoxin's affinity for the neuronal nAChR is very high, not much of the protein can be degraded before the ligand-receptor complex is formed.
=== Microwave vacuum drying === The microwave generates a specific amount of energy, shortening the drying time. In addition, the boiling point of water is lowered under vacuum, causing a high temperature inside the dried particles on the surface of the product. Microwave vacuum drying is a dehydration process that uses microwave radiation to generate heat at full pressure (chamber pressure). During vacuum drying, high-energy water molecules propagate to the surface and evaporate due to low pressure. Due to the absence of air, vacuum drying inhibits oxidation and maintains the color, texture, and taste of dried products. This device can improve the quality of products, and the equipment can prolong the shelf life of food, preserve the original taste and nutrients of food, maintain the physical activity of raw materials, enhance the function of healthy food, and increase the value of agricultural products. This method provides flavor retention, rehydration potential, and little color change compared to other thermal drying methods, along with a faster drying rate compared to freeze drying.
Sources: en.wikipedia.org
Mapping is possible for select species only: "there are many valid examples of confined distribution patterns." For example, Clathromorphum is an arctic genus and is not mapped far south of there. However, scientists regard the overall data as insufficient due to the "difficulties of undertaking such studies."
== See also == Equine chorionic gonadotropin Gonadotropin preparations Human placental lactogen Pregnancy hormones Triple test, a screening test in pregnancy The Weight-Loss Cure "They" Don't Want You to Know About, a book written by Kevin Trudeau
Bantu tribes were observed to be upholding what was described as Jewish law, including circumcision, in the 16th century. Circumcision and elements of Jewish dietary restrictions are still found among Bantu tribes.
In 1970, Tropicana orange juice was shipped in bulk via insulated boxcars in one weekly round-trip from Bradenton, Florida, to Kearny, New Jersey. By the following year, the company was operating two 60-car unit trains a week, each carrying around 1,000,000 US gallons (3,800,000 L; 830,000 imp gal) of juice. On June 7, 1971, the "Great White Juice Train" (the first unit train in the food industry, consisting of 150 100-short-ton (91 t; 89-long-ton) insulated boxcars fabricated in the Alexandria, Virginia, shops of Fruit Growers Express) commenced service over the 1,250 miles (2,010 km) route. An additional 100 cars were soon added, and small mechanical refrigeration units were installed to maintain constant temperatures. Tropicana saved $40 million in fuel costs during its first 10 years of operation.
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.