If you have been reading about Cardarine 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.
Last reviewed on 2025-12-19. Where a claim depends on a specific study, the study is described rather than over-claimed.
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 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.
| Property | Value | Notes |
|---|---|---|
| Common name | Cardarine | Common internet and media name. |
| Research code | GW501516 | Also written GW-1516. |
| Drug class | PPARδ agonist | Not a selective androgen receptor modulator. |
| Development status | Discontinued | Clinical development halted after rodent cancer findings. |
| Regulatory status | Prohibited in sport | Listed by WADA; not approved as medicine. |
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.
Sporting authorities added GW501516 to prohibited lists after it appeared in athlete samples and online markets. The World Anti-Doping Agency classifies it as a hormone and metabolic modulator, and its use can lead to an anti-doping rule violation. Some early laboratory work suggested effects on fatty acid oxidation and endurance-related metabolism in animals, but those findings do not establish safe or effective use in people. Reports of adverse events in humans are scarce and often anecdotal, which complicates risk assessment.
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.
Activation of PPARδ changes transcription of genes involved in fatty acid transport, mitochondrial function, and skeletal muscle fuel preference. In rodent studies, pharmacological PPARδ activation was associated with increased endurance and altered body composition. These findings generated interest in performance enhancement, but species differences and study designs limit direct extrapolation to humans. Small human trials were conducted in the 2000s and later discontinued. The extent to which cardarine produces similar metabolic or performance effects in people remains an open question.
The compound is typically described as a laboratory compound rather than a therapeutic product. Published reports have explored its role in lipid disorders, insulin sensitivity, and exercise metabolism, yet no major drug regulator has approved it for medical use. Commercial samples sold under the cardarine name may vary in purity and identity. Analytical confirmation is therefore necessary when the material is discussed in scientific or regulatory contexts. Its classification as a prohibited substance in sport further shapes how it is studied and reported.
Due in large part to the success of these tests, assessment was to become the core discipline of clinical psychology for the next quarter-century, when another war would propel the field into treatment.
There are many applications for AMS throughout a variety of disciplines. AMS is most often employed to determine the concentration of 14C, e.g. by archaeologists for radiocarbon dating. Compared to other radiocarbon dating methods, AMS requires smaller sample sizes (about 50 mg), while yielding extensive chronologies. MS technology has expanded the scope of radiocarbon dating. Samples ranging from 50,000 years old to 100 years old can be successfully dated using AMS, as other forms of mass spectrometry provide insufficient suppression of molecular isobars to resolve 13CH and 12CH2 from 14C atoms. Because of the long half-life of 14C, decay counting requires significantly larger samples. 10Be, 26Al, and 36Cl are used for surface exposure dating in geology. 3H, 14C, 36Cl, and 129I are used as hydrological tracers. Accelerator mass spectrometry is widely used in biomedical research. In particular, 41Ca has been used to measure bone resorption in postmenopausal women.
Many common language terms used for fruit and seeds differ from botanical classifications. For example, in botany, a fruit is a ripened ovary or carpel that contains seeds, e.g., an orange, pomegranate, tomato or a pumpkin. A nut is a type of fruit (and not a seed), and a seed is a ripened ovule. In culinary language, a fruit is the sweet- or not sweet- (even sour-) tasting produce of a specific plant (e.g., a peach, pear or lemon); nuts are hard, oily, non-sweet plant produce in shells (e.g. hazelnut, acorn). Vegetables, so-called, typically are savory or non-sweet produce (e.g. zucchini, lettuce, broccoli, and tomato). But some may be sweet-tasting (sweet potato).
Sources: en.wikipedia.org
protease Also peptidase. Any of a class of enzymes which catalyze proteolysis, i.e. the decomposition of proteins into smaller polypeptides or individual amino acids, by cleaving peptide bonds via hydrolysis. Proteases are ubiquitous components of numerous biological pathways, and therefore it is often necessary to inhibit them in order for laboratory techniques involving protein activity to be effective.
MHD oscillations are damped if the fluid is not perfectly conducting but has finite conductivity, or if viscous effects are present. MHD waves and oscillations are popular tools for the remote diagnostics of laboratory and astrophysical plasmas, for example, the Sun's corona (coronal seismology).
Ukrainian media reported that the HUR carried out a cyberattack on Russian internet providers in Crimea. The HUR revealed that a crowd-sourced satellite purchased in 2022 was responsible for taking some 4,200 images using Synthetic Aperture Radar, saying that this led to the destruction of over 1,500 Russian targets worth “billions” of dollars.
Sources: en.wikipedia.org
== Honors and awards == Brigham and Women's Hospital chose Bhatt in 2014 as the Eugene Braunwald Scholar and in 2016 presented him with the Research Mentor Award, and in 2017 he was awarded the Eugene Braunwald Teaching Award for Excellence in the Teaching of Clinical Cardiology. He was given the American College of Cardiology's Distinguished Mentor Award in 2018, and in 2019, the American Heart Association's Distinguished Scientist Award. He received NLA’s Honorary Lifetime Membership Award in 2021, and the Society for Cardiovascular Angiography and Interventions’ Master Designation in 2022. Also in 2022, Research.com recognized him with its Best Scientists award. He was listed by the Web of Science Group as a Highly Cited Researcher from 2014 to 2024. In 2025, he was a recipient of the Charaka Award, Issued by Medical Council of The Association of Indians in America. He has been a Castle Connolly Top Doctor 2014-2025 and Top Asian American and Pacific Islander Doctor 2023-2025.
1977: Argentine-Canadian scientist Veronica Dahl became the first graduate at Université d'Aix-Marseille II (and one of the first women in the world) to earn a PhD in artificial intelligence. 1977: Canadian-American Elizabeth Stern published her research on the link between birth control pills – which contained high levels of estrogen at the time – and the increased risk of cervical cancer development in women. Her data helped pressure the pharmaceutical industry into providing safer contraceptive pills with lower hormone doses. 1977: Janina Oszast is among the first Polish palaeobotanists attempting biogeographic synthesis of Miocene land sediments. She was also the first person in Poland to identify pollen from a range of herbaceous plants and the first to find pollen grains of Ephedra in glaciation period deposits. 1978: Anna Jane Harrison became the first female president of the American Chemical Society. 1978: American biochemist Mildred Cohn served as the first female president of the American Society for Biochemistry and Molecular Biology, then called the American Society of Biological Chemists.
=== Derivatives === RGPU-95 (4-chlorophenylpiracetam) is a derivative of phenylpiracetam described as having 5- to 10-fold greater potency. Cebaracetam (CGS-25248; ZY-15119) is a derivative of RGPU-95 in which the terminal amide has been replaced with a 2-piperazinone moiety. Methylphenylpiracetam, including all four of its stereoisomers (especially the (4R,5S)-enantiomer E1R), is a positive allosteric modulator of the sigma σ1 receptor. It is currently the only known racetam demonstrating σ1 receptor modulation. Whereas phenylpiracetam stimulates locomotor activity in animals, the E1R enantiomer of methylphenylpiracetam does not do so at doses of up to 200 mg/kg. Phenylpiracetam hydrazide is a hydrazide derivative of phenylpiracetam described as having anticonvulsant effects. Other derivatives of phenylpiracetam have also been developed and studied.
=== Artwork === In 2017, Carrey revealed that he had been painting for the past six years. In 2011, he exhibited the painting Nothing to See Here in an art show in Palm Springs at the Heather James Fine Art Gallery. In 2017, Carrey released a six-minute documentary entitled I Needed Color, which showed him working in his studio. In 2018, Carrey's artwork was displayed at the Outsider Art Fair, leading to discussion as to whether or not a Hollywood actor could qualify as an outsider artist.
Sources: en.wikipedia.org
No. Cardarine is a PPARδ agonist, while selective androgen receptor modulators act on androgen receptors. The two classes differ in receptor target and downstream effects.
Preclinical rodent studies reported cancers, including liver and bladder tumors, at tested doses. The human relevance of those findings is uncertain, but development was discontinued. No approved human product resulted.
No. It remains an investigational compound without approved therapeutic labeling. Sports regulators prohibit its use, and health agencies have warned against consuming it.
No. Cardarine has not received approval for human therapeutic use in major jurisdictions. It remains an investigational compound.