The short version of Anti-doping fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-04-23 and is reviewed periodically as new material appears.
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, 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.
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.
| Property | Value | Notes |
|---|---|---|
| CAS Registry Number | 317318-70-0 | Unique identifier for the compound. |
| Chemical class | PPARδ agonist | Synthetic ligand for peroxisome proliferator-activated receptor delta. |
| Appearance | White to off-white solid | Typical form of research-grade material. |
| Solubility | Soluble in DMSO and ethanol | Poorly soluble in water. |
| Typical storage | -20°C | Recommended for long-term storage of stock solutions. |
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.
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.
Legal status varies by country. In some places, cardarine is controlled under medicines or psychoactive substances laws; in others, it may be sold with minimal oversight as a research chemical. Customs agencies have intercepted shipments, and several national health agencies have issued warnings about products marketed for bodybuilding or performance enhancement. The lack of a standardized pharmaceutical supply means identity, purity, and contamination levels can differ widely between samples. These factors make cardarine a regulatory and public health concern rather than a conventional prescription drug.
Cardarine is a common name for GW501516, a synthetic compound first described in the 1990s as a selective agonist of the peroxisome proliferator-activated receptor delta. It was studied in preclinical models for metabolic and cardiovascular conditions, but it has not been approved as a medicine in the United States, Europe, or other major jurisdictions. Retail products labeled as cardarine are generally research chemicals or supplements, not pharmaceutical formulations. Because human safety and efficacy data remain limited, regulatory agencies treat it as an unapproved substance rather than a therapeutic product.
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.
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.
== Society and culture == Much medical research has been done into the causes of osteogenesis imperfecta, benefiting not only those with OI but medicine more broadly; in the ten years between 2006 and 2016, the many discoveries of non-collagen related recessive gene mutations, which still led in those who have them to the clinical signs of OI, led to numerous breakthroughs in medical understanding of the process of healthy bone development.
Remifentanil, marketed under the brand name Ultiva is a potent, short-acting synthetic opioid analgesic drug. It is given to patients during surgery to relieve pain and as an adjunct to an anesthetic. Remifentanil is used for sedation as well as combined with other medications for use in general anesthesia. The use of remifentanil has made possible the use of high-dose opioid and low-dose hypnotic anesthesia, due to synergism between remifentanil and various hypnotic drugs and volatile anesthetics.
Big Drawer II (ビグドローワー2, Bigu Dorōwā Tsū): A chest-of-drawers-themed Super Kaijuki that he uses in his smear campaign against the Dekarangers before it is destroyed by Deka Base Robo. Abtrex (アブトレックス, Abutorekkusu): Abrella's personal Kaijuki that can assume the Abtrailer (アブトレーラー, Abutorērā) drill-vehicle mode. He tasks the Alienizer Angorl with using it to attack the Deka Base and damage Dekaranger Robo before the Kaijuki is destroyed by Deka Bike Robo and the Deka Wing Cannon. During the events of the crossover film Mahō Sentai Magiranger vs. Dekaranger, Agent X pilots the succeeding model, Abotrex (アボトレックス, Abotorekkusu), before it is blasted into space by Magi Legend and the Deka Wing Cannon and destroyed by Magi King, Dekaranger Robo, Travelion, and Deka Bike Robo. Abrella is voiced by Ryūsei Nakao (中尾 隆聖, Nakao Ryūsei).
Starting in 2001, the government introduced a series of programmes to increase fertility, including paid maternity leave, childcare subsidies, tax relief and rebates, one-time cash gifts, and grants for companies that implement flexible work arrangements; nevertheless, live births have continued to decline, hitting a record low in 2022. Singapore's immigration policy is designed to alleviate the decline and maintain its working-age population. 91% of resident households (i.e. households headed by a Singapore citizen or permanent resident) own the homes they live in, and the average household size is 3.43 persons (which include dependants who are neither citizens nor permanent residents). However, due to scarcity of land, 78.7% of resident households live in subsidised, high-rise, public housing apartments developed by the Housing and Development Board (HDB). Also, 75.9% of resident households live in properties that are equal to, or larger than, a four-room (i.e. three bedrooms plus one living room) HDB flat or in private housing. Live-in foreign domestic workers are quite common in Singapore, with about 224,500 foreign domestic workers there, as of December 2013.
Sources: en.wikipedia.org
=== Pharmacodynamics === The mechanism and action of lipoic acid when supplied externally to an organism is controversial. Lipoic acid in a cell seems primarily to induce the oxidative stress response rather than directly scavenge free radicals. This effect is specific for RLA. Despite the strongly reducing milieu, LA has been detected intracellularly in both oxidized and reduced forms. LA is able to scavenge reactive oxygen and reactive nitrogen species in a biochemical assay due to long incubation times, but there is little evidence this occurs within a cell or that radical scavenging contributes to the primary mechanisms of action of LA. The relatively good scavenging activity of LA toward hypochlorous acid (a bactericidal produced by neutrophils that may produce inflammation and tissue damage) is due to the strained conformation of the 5-membered dithiolane ring, which is lost upon reduction to DHLA. In cells, LA is reduced to dihydrolipoic acid, which is generally regarded as the more bioactive form of LA and the form responsible for most of the antioxidant effects and for lowering the redox activities of unbound iron and copper. This theory has been challenged due to the high level of reactivity of the two free sulfhydryls, low intracellular concentrations of DHLA as well as the rapid methylation of one or both sulfhydryls, rapid side-chain oxidation to shorter metabolites and rapid efflux from the cell.
=== Food Preparation === The cooking of protein sources, particularly animal protein, may significantly alter both the composition and digestibility of amino acids. Since this is not always reflected in nutritional data, changes during cooking may be factored into measurements of protein quality. For example, the browning of many meats causes the Maillard reaction, which may decrease the availability of lysine, the limiting amino acid for many foods. As a result, it is recommended to use lysine as the limiting amino acid for any food likely to have undergone the Maillard reaction.
. More detailed calculations were later done by Greenwood revealing the S-shaped load/approach curve which explains the jumping-on effect. A more efficient method of doing the calculations and additional results were given by Feng
NATO categorizes ration packaging under three types: Primary packaging, which is in contact with or contains the food itself (e.g. a can containing food) Secondary packaging, which contains and groups several primary packages (e.g. a retort pouch containing food packages) Tertiary packaging, which contains and groups several secondary packages for storage, shipping, handling, and distribution (e.g. a box containing several rations for distribution)
=== Lilly's Tempo Pen === Eli Lilly's Tempo system is a diabetes management platform that includes the Tempo Pen, Tempo Smart Button, and the TempoSmart App. The Tempo Pen is a reusable insulin pen that, when paired with the Tempo Smart Button, captures and transmits insulin dose data to the TempoSmart App via Bluetooth. The TempoSmart App can integrate glucose data from compatible devices, such as the Tempo Blood Glucose Meter or Dexcom G7, allowing users to track their insulin doses, glucose levels, and other lifestyle data in one place. The app also includes features such as bolus insulin dose calculation, medication reminders, digital logbooks, trend reports, and diabetes education tools.
Sources: en.wikipedia.org
Tertiary structure — domains The tertiary structure is formed by two domains known as the large and the small, which are separated by a cleft centred around the location of the bond with ATP-ADP+Pi. Below this there is a deeper notch called a "groove". In the native state, despite their names, both have a comparable depth. The normal convention in topological studies means that a protein is shown with the biggest domain on the left-hand side and the smallest domain on the right-hand side. In this position the smaller domain is in turn divided into two: subdomain I (lower position, residues 1–32, 70–144, and 338–374) and subdomain II (upper position, residues 33–69). The larger domain is also divided in two: subdomain III (lower, residues 145–180 and 270–337) and subdomain IV (higher, residues 181–269). The exposed areas of subdomains I and III are referred to as the "barbed" ends, while the exposed areas of domains II and IV are termed the "pointed" ends. This nomenclature refers to the fact that, due to the small mass of subdomain II actin is polar; the importance of this will be discussed below in the discussion on assembly dynamics. Some authors call the subdomains Ia, Ib, IIa, and IIb, respectively.
=== Ulcerative colitis === Tacrolimus has been used to suppress the inflammation associated with ulcerative colitis (UC), a form of inflammatory bowel disease. Although almost exclusively used in trial cases only, tacrolimus has shown to be significantly effective in the suppression of flares of UC. A 2022 updated Cochrane systematic review found that tacrolimus may be superior to placebo in achieving remission and improvement in UC.
Cold Cave would be featured on the soundtrack for Tony Hawk's Pro Skater 5 later that year, and two of their songs were selected by Hawk for inclusion on 2018's Tony Hawk's Skate Jam. In mid-February 2016, a single called "Nothing Is True But You" was released. In Spring, Max G. Morton, who played keyboards for a short portion of the band's early days and also collaborated with Eisold on prose and publishing via the singer's own Heartworm Press, rejoined the band. At end of August 2016, the band shared another single, an almost cacophonic track called "The Idea of Love". In September, they embarked on a domestic mini-tour together with dark electropop act TR/ST. In late September 2017, Cold Cave released a single called "Glory", a track reminiscent of early New Order. The video accompanying the track revealed a full live band featuring, besides the ever-present Eisold and Amy Lee, steady touring member Max G. Morton, Nils Bue (bass/guitar) and Ryan McMahon (drums). The band kicked off a small US tour before heading to Europe to support The Jesus and Mary Chain until mid-October. In early April 2018, the band premiered another song, "You & Me & Infinity", and announced a 26-date North American Spring tour with Choir Boy and Black Marble. At the end of the month, a new EP bearing the title of their latest single was made available digitally. In November of the same year the band headed overseas for a string of selected European dates, again with support from Choir Boy.
=== Solubility in a strong or weak acid solution === Solutions of strong (HCl), moderately strong (sulfamic) or weak (acetic, citric, sorbic, lactic, phosphoric) acids are commercially available. They are commonly used as descaling agents to remove limescale deposits. The maximum amount of CaCO3 that can be "dissolved" by one liter of an acid solution can be calculated using the above equilibrium equations.
Sources: en.wikipedia.org
Cardarine is a common name for GW501516, a synthetic PPARδ agonist developed for research. It has not been approved as a medication in any country. It is classified as an unapproved drug and a prohibited substance in sport.
No. Cardarine is not an anabolic steroid; it belongs to a different chemical class that targets PPARδ. Steroids act primarily through androgen receptors, while cardarine acts through a nuclear receptor involved in metabolism.
Some rodent studies reported increased endurance and changes in fat metabolism after cardarine exposure. Long-term studies in animals also raised concerns about cancer in certain tissues. Human trial data are limited, so these findings cannot be directly translated to people.
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.