A practical reference on WADA Prohibited List: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
This page was last updated on 2025-12-22 and is reviewed periodically as new material appears.
Laboratory studies indicate that GW501516 activates PPARδ, a nuclear receptor involved in fatty acid oxidation and energy metabolism. In rodent experiments, treated animals often showed increased endurance and reduced fat mass. These effects were observed under controlled conditions and do not establish safe or effective use in humans. The exact dose-response relationship in humans remains poorly characterized. Species differences in metabolism can affect how results translate across animals and people.
Safety concerns emerged from long-term animal studies. In rodents given the compound for extended periods, researchers found an increased incidence of certain cancers, including liver and bladder tumors. These findings contributed to the discontinuation of clinical development. Whether similar risks apply to short-term or low-level exposure in humans is not established, and controlled human safety data are limited. The relevance of high-dose rodent carcinogenicity findings to human use remains a subject of debate.
Human trials of GW501516 were small and short in duration. They examined lipid levels, glucose handling, and other metabolic markers, but the programs were halted after the animal cancer findings. No approved therapeutic product exists, and published human data are insufficient for establishing long-term safety. Reports of use for athletic performance come mainly from non-clinical settings and cannot be verified through controlled trials. Independent testing of products sold as cardarine has found inconsistent purity and labeling.
Laboratory detection of cardarine typically involves sample preparation followed by chromatographic separation and mass spectrometric identification. Urine is the most common matrix for anti-doping tests, though blood and hair have also been explored. Methods can target the parent compound or its metabolites, depending on the expected window of detection. Reference standards are required for accurate quantification. Matrix effects and dilution can influence results, so laboratories use internal standards and validation protocols. The exact detection window varies with dose, route, and individual metabolism.
A common misconception is that cardarine has been proven safe for human use. In reality, human clinical data are limited, and long-term animal studies have raised concerns about cancer. Another misconception is that it is a supplement or vitamin-like compound. It is a synthetic research chemical with no approved medical indication. Scientific discussion often focuses on its mechanism and detection rather than therapeutic use. Regulatory and anti-doping literature treats it primarily as a prohibited substance.
| Property | Value | Notes |
|---|---|---|
| Primary target | PPARδ (NR1C2) | Nuclear receptor involved in lipid metabolism |
| Preclinical effect | Increased fatty acid oxidation | Observed in rodent studies |
| Key safety signal | Tumors in rodents after long-term exposure | Contributed to halted clinical development |
| Human trial status | No approved product; development stopped | Limited short-term metabolic data |
| Sport regulatory status | Prohibited at all times | WADA hormone and metabolic modulators class |
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.
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.
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.
In the fitness and bodybuilding literature, cardarine is frequently discussed as an endurance agent or fat-loss compound, although such claims are not supported by robust clinical evidence. Online descriptions often mix animal data, user anecdotes, and marketing language. Researchers who study PPARδ agonists distinguish between receptor activation in controlled experiments and unsupervised use of unverified products. The latter introduces unknown purity, dose, and interactions, making reported experiences difficult to interpret scientifically.
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.
Cardarine is not approved for human therapeutic use in any major jurisdiction. It appears on the World Anti-Doping Agency Prohibited List as a PPARδ agonist within the hormone and metabolic modulators category. Sports organizations test for it because it has been detected in athlete samples and seized products. Regulatory actions against marketed research chemical versions have occurred in several countries, though enforcement varies. Availability through unregulated channels complicates oversight.
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.
Synthetic biology (SynBio) is a multidisciplinary scientific field that applies the principles of engineering to develop new biological parts, devices, and systems or to redesign existing systems found in nature. The field encompasses a broad range of methodologies from various disciplines, such as biochemistry, biotechnology, biomaterials, material science/engineering, genetic engineering, molecular biology, molecular engineering, systems biology, membrane science, biophysics, chemical and biological engineering, electrical and computer engineering, control engineering and evolutionary biology. It includes designing and constructing biological modules, biological systems, and biological machines, or re-designing existing biological systems for useful purposes. Additionally, it is the branch of science that focuses on the new abilities of engineering into existing organisms to redesign them for useful purposes. In order to produce predictable and robust systems with novel functionalities that do not already exist in nature, it is also necessary to apply the engineering paradigm of systems design to biological systems. According to the European Commission, this possibly involves a molecular assembler based on biomolecular systems such as the ribosome.
An airport road was paved over the Jewish cemetery in Damascus, and Jewish schools were closed and handed over to Muslims. The Jewish Quarter of Damascus was under constant surveillance by the secret police, who were present at synagogue services, weddings, bar mitzvahs, and other Jewish gatherings. The secret police closely monitored contact between Syrian Jews and foreigners and kept a file on every member of the Jewish community. Jews also had their phones tapped and their mail read by the secret police. After Israel's victory in the 1967 Six-Day War, restrictions were further tightened, and 57 Jews in Qamishli may have been killed in a pogrom. The communities of Damascus, Aleppo, and Qamishli were under house arrest for eight months following the war. Many Jewish workers were laid off following the Six-Day War. After purging rival Baathist factions through a coup in 1970, Hafez al-Assad established total dominance over the Ba'ath party and established a dictatorship centered around his personality cult. Structure of Assad's police state revolved around the Ba'ath party organization, Syrian military establishment packed with Ba'athist elites and Assad family's Alawite loyalists. Hafez ruled Syria for three decades, deploying repressive measures ranging from censorship to violent methods of state terror such as mass murders, deportations and practices such as torture, which were unleashed collectively upon the civilian population.
== Cause == Burns are caused by a variety of external sources classified as thermal (heat-related), chemical, electrical, and radiation. In the United States, the most common causes of burns are: fire or flame (44%), scalds (33%), hot objects (9%), electricity (4%), and chemicals (3%). Most (69%) burn injuries occur at home or at work (9%), and most are accidental, with 2% due to assault by another, and 1–2% resulting from a suicide attempt. These sources can cause inhalation injury to the airway and/or lungs, occurring in about 6%. Burn injuries occur more commonly among the poor. Smoking and alcoholism are other risk factors. Fire-related burns are generally more common in colder climates. Specific risk factors in the developing world include cooking with open fires or on the floor as well as developmental disabilities in children and chronic diseases in adults.
==== Thermoplastic adhesives ==== These represent the most widespread class of textile adhesives, favored for their low toxicity and ease of application. Products such as Mowilith® DMC2, Vinamul® 3252, Vinnapas® EP1 are used with fragmented silks and friable cellulosics like cotton. Beva® 371 is typically used with painted textiles due to its solubility in white spirits (mineral spirits), which don't damage the painted surface. Lascaux 360HV is favored for highly degraded materials because of its low activation temperature.
Sources: en.wikipedia.org
=== Methods for the analysis of vitamin B12 in food === Several methods have been used to determine the vitamin B12 content in foods including microbiological assays, chemiluminescence assays, polarographic, spectrophotometric, and high-performance liquid chromatography processes. The microbiological assay has been the most commonly used assay technique for foods, utilizing certain vitamin B12-requiring microorganisms, such as Lactobacillus delbrueckii subsp. lactis ATCC7830. However, it is no longer the reference method due to the high measurement uncertainty of vitamin B12. Furthermore, this assay requires overnight incubation and may give false results if any inactive vitamin B12 analogues are present in the foods. Currently, radioisotope dilution assay (RIDA) with labeled vitamin B12 and hog IF (pigs) have been used to determine vitamin B12 content in food. Previous reports have suggested that the RIDA method can detect higher concentrations of vitamin B12 in foods compared to the microbiological assay method.
==== Sleep disorders ==== Modafinil, a eugeroic or wakefulness-promoting drug, is used for treating narcolepsy, a sleep disorder characterized by excessive daytime sleepiness and sudden sleep attacks. Being a central nervous system (CNS) stimulant itself, modafinil has lower addictive potential than classical stimulants such as amphetamine, cocaine, or methylphenidate, but still produces psychoactive and subjective effects typical of classical stimulants. Narcolepsy causes a strong urge to sleep during the day and can include symptoms like cataplexy (sudden muscle weakness), sleep paralysis (inability to move or speak while falling asleep or waking up), and hallucinations. Narcolepsy is linked to a lack of the brain chemical hypocretin (orexin), primarily produced in the hypothalamus. Modafinil is not a cure for narcolepsy, but it can help manage the symptoms. While modafinil is used to treat excessive sleepiness, it may also help reduce the frequency and severity of cataplexy attacks in some people. Modafinil is approved for management of narcolepsy with or without cataplexy. However, it is not specifically approved for the treatment of cataplexy. Modafinil is also prescribed for shift work sleep disorder, a condition affecting people who work rotating or night shifts and experience excessive sleepiness during work hours and difficulty sleeping during the day. The recommended dose for this indication is 200 mg taken approximately one hour before the start of the work shift.
=== 17 February === The SAF took control of the Kafouri area, the last RSF stronghold in Khartoum North, and the city of Er Rahad in North Kordofan. It also retook the Ministry of Animal Resources, the Tax Tower, the Malaysian Tower, and the Medical Supply Department headquarters near central Khartoum. The Sudanese government extended the opening of the Adre border crossing with Chad until 16 May to allow humanitarian aid to reach Darfur.
Sources: en.wikipedia.org
Rodent studies reported increased endurance and fat oxidation after GW501516 exposure. Long-term studies also found higher rates of some tumors, which led to halted development.
Small short-term human trials examined metabolic markers such as lipids and glucose. The trials did not continue after rodent cancer findings, so long-term human safety is unknown.
Controlled human trials have not established a performance benefit. Anecdotal reports exist, but they are not reliable evidence.
Yes, WADA prohibits cardarine as a PPARδ agonist. It appears on the prohibited list and can be detected in urine or blood. Athletes using it risk sanctions.