If you have been reading about Anti-doping and want a single page that covers the useful parts, this is it: definitions, context, how it is studied, and the questions that come up repeatedly.
Updated 2026-04-12. Numbers and descriptions here follow the published literature rather than marketing material.
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.
The pharmacological interest in cardarine centers on PPARδ activation and its downstream effects on lipid handling and mitochondrial function. In animal studies, PPARδ agonists have been associated with changes in exercise endurance and fatty acid utilization, though results vary by model and protocol. Human data remain sparse, and the absence of large controlled trials limits conclusions about efficacy. Researchers often describe the compound as a tool for probing PPARδ biology rather than a proven therapeutic agent.
Safety discussions about cardarine frequently cite rodent carcinogenicity findings reported in the 2000s. In those studies, treated animals developed tumors at multiple sites, leading sponsors to discontinue clinical development. The relevance of these findings to humans has not been resolved, but they are a major reason the compound is not approved. Current literature emphasizes uncertainty about long-term effects and the risks of unregulated use. Regulators and health agencies have not established a safe human exposure level.
| 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. |
Products sold as cardarine have been found to contain incorrect compounds, variable amounts, or no active ingredient at all. Independent testing is required to verify identity and purity. Common analytical approaches include high-performance liquid chromatography, mass spectrometry, and nuclear magnetic resonance for structural confirmation. These methods can distinguish GW501516 from related PPAR agonists and from unrelated steroids. For regulators and researchers, such verification is central to interpreting both biological results and adverse event reports.
Cardarine is prohibited in competitive sport under the World Anti-Doping Agency code, where it is classified as a metabolic modulator. It is not approved as a prescription medicine in the United States, European Union, or other major markets. Regulatory action has focused on its presence in sports and in products marketed as research chemicals. Because it has no accepted medical indication, supply is often unregulated. This status creates legal and safety uncertainties for anyone who encounters the substance.
Cardarine is frequently described as a fat-burning or endurance-enhancing supplement, but these claims exceed the available evidence. The compound is not a hormone, steroid, or selective androgen receptor modulator. Research articles discuss it as a tool compound for studying PPARδ biology, while anti-doping literature focuses on its abuse and detection. Quality of unapproved products is uncertain, and independent analyses have found impurities or incorrect labeling. Open questions include whether human cancer risk resembles that seen in rodents and how often non-athletes use the substance.
Cardarine has no approved therapeutic indication and is not marketed as a medicine. The World Anti-Doping Agency lists GW501516 as a prohibited substance at all times, covering both in-competition and out-of-competition periods. National laws vary: some countries treat it as an unapproved drug subject to import controls, while others have specific restrictions on sale for human consumption. It is often sold as a research chemical, a label that does not imply safety or legality. Enforcement actions have targeted online vendors and shipments.
GW501516 acts on PPARδ, a nuclear receptor that helps regulate fatty acid oxidation and energy homeostasis. In animal studies, activation of this receptor was associated with increased endurance and changes in lipid metabolism. Human trials examined effects on blood lipids and other metabolic markers, but the compound did not advance to approval. Rodent studies later reported tumors in multiple tissues at doses used in those experiments. Whether those findings translate to human risk remains uncertain, and the clinical relevance of the animal data is still debated.
Regulatory bodies treat GW501516 as a prohibited substance in competitive sport. The World Anti-Doping Agency added it to the prohibited list, and it falls under classes covering metabolic modulators and hormone-related agents. It is not approved by drug regulators for human use, and it is not a lawful dietary supplement. Products sold under the cardarine name may contain unlisted ingredients or different compounds. Because no approved product exists, quality and identity are not guaranteed by pharmaceutical manufacturing standards.
Cardarine is a common name for the investigational chemical GW501516, also written GW-1516. It was developed as a peroxisome proliferator-activated receptor delta agonist for metabolic conditions such as dyslipidemia. Early research focused on lipid handling and energy use in skeletal muscle and other tissues. The compound was never approved as a medicine. In public discussion, it is often grouped with performance-enhancing substances, although its receptor target differs from that of anabolic steroids or selective androgen receptor modulators. Regulatory and health authorities have issued warnings about its use.
The α-decay half-life of 240Cm was determined as 26.8 days and later revised to 30.4 days. The discovery of curium and americium in 1944 was closely related to the Manhattan Project, so the results were confidential and declassified only in 1945. Seaborg leaked the synthesis of the elements 95 and 96 on the U.S. radio show for children, the Quiz Kids, five days before the official presentation at an American Chemical Society meeting on November 11, 1945, when one listener asked if any new transuranic element beside plutonium and neptunium had been discovered during the war. The discovery of curium (242Cm and 240Cm), its production, and its compounds was later patented listing only Seaborg as the inventor.
AI can be used to create sexually explicit images and videos featuring unconsenting individuals, most often celebrities. 404 Media reported the existence of a Telegram bot for generating AI videos that has a monthly audience of over 100,000 users. In 2025, the Chinese technology company Alibaba released a video generation model called Wan 2.1, which was subsequently modified to remove guardrails, allowing generation of suggestive content.
=== First combat operations === The ENT participated in its first major combat operations in June–July 1977, against Libyan-supported FROLINAT rebels. Following an attack on Zouar, reconnaissance missions were launched from the Faya-Largeau Airport. The first attack sorties were flown by Skyraiders on 1 July. Bombs, rockets and cannons were used against the rebel positions, but nearly every aircraft involved was damaged by ground fire. The next day, tactics were changed, with the pilots deciding to attack from altitudes as low as 60 m, releasing all of their weapons in a single pass. Even though the exposure to return fire was reduced, several aircraft were damaged by the explosions of bombs and rockets. On 3 July, a Skyraider received a hit in its engine, and its pilot was forced to land on an abandoned airstrip near Zouar. He was quickly recovered by his wingman. A team of technicians later arrived on board a C-47, and repaired the aircraft, which was flown out the next day. Despite the ENT's efforts, Zouar was overrun by the FROLINAT on 6 July. Following several months of preparations, the FROLINAT's next major attack came in January 1978. All of the ANT's garrisons in the Tibesti were overrun. The FROLINAT and the Libyan Army's advance was monitored by the ENT. During one of such missions, on 29 January, a C-47 was hit by a 9K32 Strela-2 (SA-7) MANPADS while flying at a very low altitude, and it crashed; its whole crew was killed.
== Ecological lifetime == A poison which enters the food chain—whether of industrial, agricultural, or natural origin—might not be immediately toxic to the first organism that ingests the toxin, but can become further concentrated in predatory organisms further up the food chain, particularly carnivores and omnivores, especially concerning fat soluble poisons which tend to become stored in biological tissue rather than excreted in urine or other water-based effluents. Apart from food, many poisons readily enter the body through the skin and lungs. Hydrofluoric acid is a notorious contact poison, in addition to its corrosive damage. Naturally occurring sour gas is a fast-acting atmospheric poison, which can be released by volcanic activity or drilling rigs. Plant-based contact irritants, such as that possessed by poison ivy, are often classed as allergens rather than poisons; the effect of an allergen being not a poison as such, but to turn the body's natural defenses against itself. Poison can also enter the body through faulty medical implants, or by injection (which is the basis of lethal injection in the context of capital punishment). In 2013, 3.3 million cases of unintentional human poisonings occurred. This resulted in 98,000 deaths worldwide, down from 120,000 deaths in 1990. In modern society, cases of suspicious death elicit the attention of the Coroner's office and forensic investigators.
Sources: en.wikipedia.org
A rheumatologist is a physician who specializes in the field of medical sub-specialty called rheumatology. A rheumatologist holds a board certification after specialized training. In the United States, training in this field requires four years of undergraduate school, four years of medical school, and then three years of residency, followed by two or three years of additional Fellowship training. The requirements may vary in other countries. Rheumatologists are internists who are qualified by additional postgraduate training and experience in the diagnosis and treatment of arthritis and other diseases of the joints, muscles, and bones. Many rheumatologists also conduct research to determine the cause and better treatments for these disabling and sometimes fatal diseases. Treatment modalities are based on scientific research, currently, the practice of rheumatology is largely evidence-based. Rheumatologists treat arthritis, autoimmune diseases, pain disorders affecting joints, and osteoporosis. There are more than 200 types of these diseases, including rheumatoid arthritis, osteoarthritis, gout, lupus, back pain, osteoporosis, and tendinitis. Some of these are very serious diseases that can be difficult to diagnose and treat. They treat soft tissue problems related to the musculoskeletal system and sports-related soft tissue disorders. Pediatric rheumatologist: A pediatric rheumatologist is a pediatrician who specializes in the treatment of children with rheumatic disease.
=== International normalized ratio === The result (in seconds) for a prothrombin time performed on a normal individual will vary according to the type of analytical system employed. This is due to the variations between different types and batches of manufacturer's tissue factor used in the reagent to perform the test. The INR was devised to standardize the results. Each manufacturer assigns an ISI value (International Sensitivity Index) for any tissue factor they manufacture. The ISI value indicates how a particular batch of tissue factor compares to an international reference tissue factor. The ISI is usually between 0.94 and 1.4 for more sensitive and 2.0–3.0 for less sensitive thromboplastins. The INR is the ratio of a patient's prothrombin time to a normal (control) sample, raised to the power of the ISI value for the analytical system being used.
== See also == Russell 3000 Index – U.S. all-cap stock market index Russell 1000 Index – U.S. large-cap stock market index S&P 600 – American small-cap stock market index List of largest daily changes in the Russell 2000
=== United States === As of July 2012, only six states lack legislation to regulate the professional practice of TCM: Alabama, Kansas, North Dakota, South Dakota, Oklahoma, and Wyoming. In 1976, California established an Acupuncture Board and became the first state licensing professional acupuncturists.
After the federation was dissolved in December 1963, British Prime Minister Sir Alec Douglas-Home insisted that preconditions on independence talks hinge on what he termed the "five principles" – unimpeded progress to majority rule, assurance against any future legislation decidedly detrimental to black interests, "improvement in the political status" of local Africans, an end to official racial discrimination, and a political settlement that could be "acceptable to the whole population". Harold Wilson and his incoming Labour government took an even harder line on demanding that these points be legitimately addressed before a timetable for independence could be set. In 1964, growing white dissatisfaction with the ongoing negotiations played a major role in the ousting of Winston Field as Prime Minister of Southern Rhodesia. Field was succeeded by Ian Smith, chairman of the conservative Rhodesian Front Party and an outspoken critic of any immediate transition to majority rule. Smith, the colony's first Rhodesian-born leader, soon came to personify resistance to liberals in British government and those agitating for change at home. In September 1964, Smith visited Lisbon, where Portuguese prime minister António de Oliveira Salazar promised him "maximum support" if he should declare independence. Aside from a common interest in maintaining security ties in southern Africa, Salazar expressed a great deal of anger at Britain's refusal to support Portugal during the Indian annexation of Goa in 1961, admonishing Smith not to trust the British government.
Sources: en.wikipedia.org
Thyroid Stimulating Hormone (TSH) (University of Washington Medical Center). September 2011. Method: Access 2 (Beckman Coulter). Thyroid Stimulating Hormone (TSH) (Collaborative Laboratory Services). September 2011. Method: Access 2 (Beckman Coulter). Thyroid Stimulating Hormone (TSH). September 2009. Method: Access 2 (Beckman Coulter). Lab 18 Thyroid Stimulating Hormone. 2001-2002. Method: Microparticle Enzyme Immunoassay. Lab 18 TSH - Thyroid Stimulating Hormone. 1999-2000. Method: Microparticle Enzyme Immunoassay.
A topical formulation of oxymetazoline, with the developmental code name DA-020, is under development for the treatment of alopecia (hair loss). As of March 2026, it is in the preclinical research stage of development for this indication. The drug is being developed by Safety Shot.
The cause of capsular contracture is unknown, but the common incidence factors include bacterial contamination, device-shell rupture, filler leakage, and hematoma. The surgical implantation procedures that have reduced the incidence of capsular contracture include submuscular emplacement, the use of breast implants with a textured surface (polyurethane-coated); limited pre-operative handling of the implants, limited contact with the chest skin of the implant pocket before the emplacement of the breast implant, and irrigation of the recipient site with triple-antibiotic solutions. The correction of capsular contracture might require an open capsulotomy (surgical release) of the collagen-fiber capsule, or the removal, and possible replacement, of the breast implant. Furthermore, in treating capsular contracture, the closed capsulotomy (disruption via external manipulation) once was a common maneuver for treating hard capsules, but now is a discouraged technique, because it can rupture the breast implant. Non-surgical treatments for collagen-fiber capsules include massage, external ultrasonic therapy, leukotriene pathway inhibitors such as zafirlukast (Accolate) or montelukast (Singulair), and pulsed electromagnetic field therapy (PEMFT).
== Other antibody binding proteins == In addition to protein A/G, other immunoglobulin-binding bacterial proteins such as protein A, protein G and protein L are all commonly used to purify, immobilize or detect immunoglobulins. Each of these immunoglobulin-binding proteins has a different antibody binding profile in terms of the portion of the antibody that is recognized and the species and type of antibodies.
Most dietary carbohydrates contain glucose, either as their only building block (as in the polysaccharides starch and glycogen), or together with another monosaccharide (as in the hetero-polysaccharides sucrose and lactose). Unbound glucose is one of the main ingredients of honey. Glucose is extremely abundant and has been isolated from a variety of natural sources across the world, including male cones of the coniferous tree Wollemia nobilis in Rome, the roots of Ilex asprella plants in China, and straws from rice in California.
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 an investigational synthetic compound that acts as a PPARδ agonist. It is also known as GW501516 and has been studied mainly in preclinical research. It is not an approved medicine.