WADA Prohibited List is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Updated 2026-01-23. Numbers and descriptions here follow the published literature rather than marketing material.
GW501516 acts as an agonist at peroxisome proliferator-activated receptor delta, a nuclear receptor involved in transcription of genes related to lipid handling and energy use. Activation of PPARδ can shift skeletal muscle toward greater fatty acid oxidation in animal models, which is one reason it drew interest for metabolic disease and exercise research. The exact downstream effects depend on tissue, species, dose, and duration. Human data are sparse, so many proposed benefits remain hypotheses rather than established clinical outcomes.
Laboratory studies have examined GW501516 in cell cultures and rodents for conditions such as dyslipidemia, insulin resistance, and obesity. Some trials in humans were initiated, but development was discontinued after preclinical findings raised concerns about cancer in certain models. Those findings do not prove that the compound causes cancer in people, but they contributed to regulatory caution. Later reviews often describe the evidence as preliminary and insufficient for assessing long-term safety.
GW501516 binds and activates PPARδ, a nuclear receptor that influences transcription of genes involved in fatty acid oxidation and energy use. Activation shifts some metabolic pathways in preclinical models, which is why the compound has been studied for lipid disorders and exercise-related endpoints. The exact downstream effects in humans are incompletely mapped. PPARδ is expressed in many tissues, including skeletal muscle, liver, and adipose tissue, so broad activation may have varied consequences. Researchers continue to examine how selective or partial activation might alter the balance between benefits and risks.
Published human data are sparse and mostly come from early-phase trials. Those studies examined short-term changes in lipids, glucose, and exercise capacity, but they were not large enough to establish efficacy or long-term safety. Some animal experiments reported increased running endurance, yet such findings do not prove a performance benefit in people. Anti-doping laboratories detect GW501516 and its metabolites in urine or blood using liquid chromatography-tandem mass spectrometry. Detection windows depend on dose, sample type, and individual metabolism. The method is sensitive enough to identify trace residues in tested samples.
| Property | Value | Notes |
|---|---|---|
| Solubility | Soluble in dimethyl sulfoxide and some organic solvents; practically insoluble in water | Solvent choice affects laboratory handling |
| Typical storage | -20 °C, desiccated, protected from light | Common condition for research samples |
| Analytical method | Liquid chromatography–tandem mass spectrometry (LC-MS/MS) | Used for identification and quantification in biological or product samples |
| Common synonyms | GW501516, GW-501516, GSK-516, Endurobol | Names found in research and anti-doping literature |
| Regulatory status | Unapproved therapeutic; prohibited in competitive sport | Status can vary by country and context |
Analytical laboratories typically identify cardarine and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is a common matrix in anti-doping testing, while blood and tissue may be used in research settings. Detection windows depend on the assay, the sample matrix, and the compound's metabolism. Because cardarine is extensively metabolized, laboratories often target specific metabolites to improve sensitivity and confirmation. Reference standards are required for reliable quantification. Method validation includes checks for selectivity, linearity, and carryover.
A persistent misconception is that cardarine is a fat-burning drug or a safe alternative to anabolic steroids. No approved therapeutic product exists, and human safety data are limited. The tumor findings in rodents remain a central concern in scientific reviews. Products sold online may contain inaccurate labels, impurities, or different compounds entirely, which complicates any assessment of effects. Independent testing of such products has reported frequent mislabeling. For these reasons, discussions in the literature emphasize risks and unknowns rather than benefits.
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.
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.
The polypeptide hormone IGF1 is synthesized primarily in the liver upon stimulation by growth hormone (GH). It is a key mediator of anabolic activities in numerous tissues and cells, such as growth hormone-stimulated growth, metabolism and protein translation. Due to its participation in the GH-IGF1 axis it contributes among other things to the maintenance of muscle strength, muscle mass, development of the skeleton and is a key factor in brain, eye and lung development during fetal development. Studies have shown the importance of the GH/IGF1 axis in directing development and growth, where mice with an IGF1 deficiency had a reduced body- and tissue mass. Mice with an excessive expression of IGF1 had an increased mass.
=== Hypodermis === Beneath these layers lies the hypodermis, which is composed of adipose tissue, fascia, as well as larger lymphatic and blood vessels. For joint and muscle disease treatment, topically applied drugs such as non-steroidal anti-inflammatory drugs (NSAIDs) can penetrate the subcutaneous tissue or even deeper tissues in the hypodermis. Drugs are primarily delivered into the underlying muscle by direct penetration without prior entry into the systemic circulation to prevent unintended side effects.
=== Alzheimer's disease === In November 2025, Novo Nordisk announced top-line results from two large-scale studies, evoke and evoke+. The studies reported failure to slow the progression of Alzheimer's disease versus placebo.
Sources: en.wikipedia.org
A breeder reactor is a nuclear reactor that generates more fissile material than it consumes. These reactors can be fueled with more-commonly available isotopes of uranium and thorium, such as uranium-238 and thorium-232, as opposed to the rare uranium-235 which is used in conventional reactors. These materials are called fertile materials since they can be bred into fuel by these breeder reactors. Breeder reactors achieve this because their neutron economy is high enough to create more fissile fuel than they use. These extra neutrons are absorbed by the fertile material that is loaded into the reactor along with fissile fuel. This irradiated fertile material in turn transmutes into fissile material which can undergo fission reactions. Breeders were at first found attractive because they made more complete use of uranium fuel than light-water reactors, but interest declined after the 1960s as more uranium reserves were found and new methods of uranium enrichment reduced fuel costs. Breeder reactors have been developed and operated in Russia, India, Japan, the United States, France, and China, but only Russia is currently operating a commercial fast breeder reactor as of April 2026.
Chia seeds may be added to other foods as a topping or put into smoothies, breakfast cereals, energy bars, granola bars, yogurt, tortillas, and bread. They also may be made into a gelatin-like substance or consumed raw. The gel from ground seeds may be used in place of eggs in baking, and it is a common substitute in vegan and allergen-free baking. Chia seeds can also be used to create a pudding-like dessert if the seeds are mixed with a flavored liquid and left in the fridge overnight. The chia seeds absorb water from the liquid to create a gelatinous outer layer. It is typically made by leaving the seeds to soak in a liquid base overnight.
In particular, opposition lawmakers were quick to condemn the communique to Norway about the Nobel Prize, widely questioning Trump's mental fitness for office: Andy Kim, who sits on the House Foreign Affairs Committee, described it as "unhinged and embarrassing", and Chris Murphy of the Senate Foreign Affairs Committee as "the ramblings of a man who has lost touch with reality". American historian Anne Applebaum wrote that Trump is "maniacally, unhealthily obsessive" about the Nobel Peace Prize and uses it as justification for an invasion of Greenland. Gavin Newsom criticised Europe's response to Trump's tariff threats as weak and "pathetic" while speaking on the sidelines of the World Economic Forum in and called on EU leaders to present a unified and more assertive stance toward the US. Experts said a US invasion of Greenland would violate US law and could spark a constitutional crisis. A poll from YouGov in mid-January found only 8% of Americans supported using military force to take Greenland from Denmark, with 73% opposition. "Buying" Greenland had only 28% support, with 45% opposition.
The next step is to form 1,2,3-Benzotriazin-4(3H)-one-14C (compound 4). In water dissolved sodium nitrite is added to anthranilamide and hydrochloric acid in ice water. Because this is a diazotization reaction, the product is pale-yellow again. After this the pH is adjusted to 8,5. This causes the ring closure to form 1,2,3-Benzotriazin-4(3H)-one-14C. This results in a sodium salt slurry that can be treated with hydrochloric acid, what lowers the pH down to 2 till 4. The 1,2,3-Benzotriazin-4(3H)-one-14C is collected, washed and dried. In the following step 1,2,3-Benzotriazin-4-(3-chloromethyl)-one-14C has to be formed. Therefore, 1,2,3-Benzotriazin-4(3H)-one-14C and paraformaldehyde are added to ethylene dichloride and heated to 40 °C. Then thionyl chloride is added and the whole solvent is further heated to 65 °C. After four hours of heating the solution is cooled down to room temperature. Water is added and the solution is neutralized. The ethylene dichloride layer is removed and put together with the result of the washed aqueous layer. The solvent was filtered and dried. The last step is the actual synthesis of Azinphos methyl. Ethylene dichloride is added to the compound resulting from the fifth step, 1,2,3-Benzotriazin-4-(3-chloromethyl)-one-14C. This mixture is heated to 50 °C and sodium bicarbonate and O,O-dimethyl phosphorodithioate sodium salt in water are added. The ethylene dichloride layer is removed, reextracted with ethylene dichloride and purified by filtration. The pure filtrate is dried.
Sources: en.wikipedia.org
=== Sales === Garry's Mod sold 5,729 copies on its first day, 312,541 by December 2008, 770,628 by October 2010, 1 million by July 2011, 1.4 million by March 2012, 3.5 million by July 2013, 6 million by September 2014, 10 million by January 2016, 15 million by December 2019, 18,671,533 by December 2020, over 20 million by September 2021, and 25,560,290 at the game's eighteenth anniversary in November 2024. Newman estimated that, as of 2019, the game sold about 1.5 million copies annually. Sales of the game made for revenues of $3 million by December 2008, $22 million by March 2013, $30 million by February 2014, and US$119,836,074 by December 2020. The game's success allowed Facepunch to grow further, eventually branching out into other games, such as Rust. As of 2010, Garry's Mod is regularly among the then most-played games on Steam. Guinness World Records named it the best-selling PC-exclusive game ever in September 2024.
Ethylene oxide is one of the most commonly used sterilization methods in the healthcare industry because of its non-damaging effects on delicate instruments and devices that require sterilization, and for its wide range of material compatibility. It is used for instruments that cannot tolerate heat, moisture, or abrasive chemicals, such as electronics, optical equipment, paper, rubber, and plastics. It is the most common chemical sterilization method, used for approximately 70% of total sterilizations, and for over 50% of all disposable medical devices. Ethylene oxide treatment was developed in the 1940s as a sterilant by the US military, and its use as a medical sterilant dates to the late 1950s, when the McDonald process was patented for medical devices. The Anprolene system was patented in the 1960s by Andersen Products, and it remains the most commonly used system in several niche markets, notably the veterinary market and some international markets. It relies on the use of a flexible sterilization chamber and an EtO cartridge for small volume sterilization, and where environmental and/or portability considerations dictate the use of a low dose. It is therefore referred to as the "flexible chamber sterilization" method, or the "gas diffusion sterilization" method. In the United States, the operation of EtO sterilization is overseen by the EPA through the National Emissions Standards for Hazardous Air Pollutants (NESHAP).
David Shukman (born 30 May 1958), British journalist of Polish Jewish ancestry, author of over five books and the former science editor of BBC News; son of author and scholar Harold Shukman Nicola Shulman (born 1960), is a British biographer, former model, and aristocrat. After her marriage in 1990 she has been known as Nicola Phipps, Marchioness of Normanby. She is the author of two biographies. Her second book, Graven with Diamonds, was reviewed in The Daily Telegraph, The Guardian, The Times, The Sunday Times, and The Independent. J. David Simons, novelist Simon Sinek (born 9 October 1973), British-born American author and inspirational speaker of Hungarian Jewish ancestry; the author of five books, including Start With Why (2009) and The Infinite Game (2019). Robert Skidelsky, Baron Skidelsky (born 25 April 1939), of Russian Jewish ancestry, author of fifteen academic texts on economics and politics, focusing on, amongst others, fascist Oswald Mosley and he is the author of a three-volume award-winning biography of British economist John Maynard Keynes (1883–1946). Skidelsky also writes for The Guardian, The New York Times, Daily Mail, Financial Times. Daniel Snowman (born 1938), writer, historian, lecturer and broadcaster on social and cultural history.
Imipenem/cilastatin/relebactam, sold under the brand name Recarbrio(Merck), is a fixed-dose combination medication used as an antibiotic. In 2019, it was approved for use in the United States for the treatment of complicated urinary tract and complicated intra-abdominal infections. It is administered via intravenous injection. The most common adverse reactions include nausea, diarrhea, headache, fever and increased liver enzymes. The most common adverse reactions observed in people treated for hospital-acquired bacterial pneumonia and ventilator-associated bacterial pneumonia (HABP/VABP) include increased aspartate/alanine aminotransferases (increased liver enzymes), anemia, diarrhea, hypokalemia (low potassium), and hyponatremia (low sodium).
== Side effects == Side effects of fentanyl analogs are similar to those of fentanyl itself, which include itching, nausea and potentially serious respiratory depression, which can be life-threatening. Fentanyl analogs have killed hundreds of people throughout Europe and the former Soviet republics since the most recent resurgence in use began in Estonia in the early 2000s, and novel derivatives continue to appear. A new wave of fentanyl analogues and associated deaths began in around 2014 in the US, and have continued to grow in prevalence; especially since 2016 these drugs have been responsible for hundreds of overdose deaths every week.
Sources: en.wikipedia.org
It binds and activates PPARδ, a nuclear receptor that influences gene expression related to fatty acid metabolism and energy balance. This mechanism has been studied mainly in animals and cell models, not established as a safe human therapy.
No. It is not an anabolic-androgenic steroid; it is a synthetic PPARδ agonist. Because it is banned in sport, it is sometimes grouped with doping agents even though its chemical class differs from steroids.
Human data are limited and development was discontinued, so major effects and long-term risks are not well characterized. Some early studies examined metabolic markers, but they do not provide a basis for unsupervised use.
Anti-doping and clinical laboratories commonly use liquid chromatography-tandem mass spectrometry. The method can identify GW501516 and its metabolites in urine or blood. Detection depends on sample timing and the amount present.