WADA comes up often in conversation and rarely with the context attached. Here we lay out the basics in order, then work through the practical considerations.
Last reviewed on 2026-06-25. Where a claim depends on a specific study, the study is described rather than over-claimed.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Chemical class | Synthetic PPARδ agonist | Not a steroid or a selective androgen receptor modulator. |
| Common synonyms | Cardarine, GW501516, GW-501516, endurobol | Names vary by supplier and literature source. |
| Appearance | White to off-white powder | Consistent with many small-molecule research chemicals. |
| Solubility | Low in water; soluble in DMSO and ethanol | Often prepared in organic solvent for laboratory work. |
| Primary target | PPARδ (NR1C2) | Nuclear receptor involved in lipid and energy metabolism. |
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 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.
Anti-doping laboratories detect GW501516 and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is the most common matrix, though blood and dried blood spots may also be used in some programs. Detection depends on factors such as dose, timing, metabolism, and the sensitivity of the assay. Published methods describe limits of detection in the low nanogram per milliliter range for related compounds. Exact detection windows are not fixed for all situations and remain an area of ongoing study.
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.
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.
Cardarine is explicitly prohibited by the World Anti-Doping Agency under the class of PPARδ agonists. Its presence in urine or blood samples can be detected using mass spectrometry-based methods, often liquid chromatography-tandem mass spectrometry. Athletes who test positive may face sanctions, including bans from competition. The compound is also regulated as a prescription-only or unapproved drug in many countries. Enforcement varies by jurisdiction, and some regions treat it as a controlled substance. Online sales may occur despite these restrictions, creating quality and legal risks.
== In popular culture == Christine Weick, an American Christian activist and author, created a video that argued that Monster Energy sports drinks are associated with Satan. The November 2014 video was published on YouTube, garnering over 14 million views as of 2024. The viral nature of the video got her an appearance on the Web Redemption segment of Comedy Central's Tosh.0. The energy drink also features prominently as product placement in the video game Death Stranding (2019), in which it restores stamina and can be consumed by the main character in his private room.
==== Medical evacuations ==== Due to the destruction of Gaza's healthcare system, medical evacuation is necessary for access to specialized treatment unavailable in the Gaza Strip. Evacuation planning for children with medical concerns such as cancer out of Gaza and to continue treatment began in mid-October 2023, with discussions and negotiations among the United States, Egypt, Israel and Palestinian health officials along with World Health Organization and St. Jude Children's Research Hospital representatives. Many families and officials involved in Gaza have described a difficult process with damage to transportation avenues and communication networks causing many to miss crossing or pick-up times, while others were not allowed to evacuate with their children. After repeated airstrike damage and lack of fuel at least two dozen premature babies were evacuated out of Gaza hospitals to Egypt to continue the specialized care they needed. Those that were evacuated were suffering from life-threatening conditions including dehydration, vomiting, hypothermia and sepsis due to the lack of medicine and fuel. Injured children were also evacuated with Turkey offering treatment and resources to at least two groups of children that were receiving intensive care treatment. It was reported in early March 2024, that about 300 children had been evacuated to Qatar with the majority being wounded and needing treatment but some being parents or a supporter.
== Further reading == Touraine, P. (2005). "Breast Inflammatory Gigantomastia in a Context of Immune-Mediated Diseases". Journal of Clinical Endocrinology & Metabolism. 90 (9): 5287–5294. doi:10.1210/jc.2005-0642. PMID 15972574. Oladele, AO; Olabanji, JK; Alabi, GH (2007). "Reduction mammoplasty: The experience in Ile-Ife, Nigeria". Nigerian Journal of Medicine. 16 (3): 261–267. PMID 17937167. Netscher, David T.; Mosharrafa, ALI M.; Laucirica, Rodolfo (1996). "Massive Asymmetric Virginal Breast Hypertrophy". Southern Medical Journal. 89 (4): 434–7. doi:10.1097/00007611-199604000-00019. PMID 8614890. U.S.A. Library of Congress - Healthy Breasts: A Primer John Blair Deaver (1917). The Breast: Its Anomalies, Its Diseases, and Their Treatment. P. Blakiston's Son & Co. p. 102. Joseph, Jacques (1987). Rhinoplasty and facial plastic surgery with a supplement on mammaplasty and other operations in the field of plastic surgery of the body: an atlas and textbook. Phoenix: Columella Press. p. 755. ISBN 0-9605972-1-2. Plummer, Samuel C.; Bump, Warner S. (1927). "Massive Hypertrophy of the Breasts". Annals of Surgery. 85 (1): 61–6. doi:10.1097/00000658-192701000-00008. PMC 1399262. PMID 17865606. Warren, John Collins (1900). The International text-book of surgery. Vol. II. Saunders. p. 234. Erichsen, John Eric (1885). The Science and art of surgery. Vol. II. H. C. Lea's Son & Company. pp. 693–694. Ochsner, Albert John (1921). Surgical Diagnosis and Treatment: By American Authors. Lea & Febiger. p. 147.
Favor was a "plastic, smoke-free product shaped and colored like a conventional cigarette that contained a filter paper soaked with liquid nicotine so users could draw a small dose by inhaling. There was no electricity, combustion, or smoke; it delivered only nicotine." Favor cigarettes were sold in California and several Southwestern states, marketed as "an alternative to smokers, and only to smokers, to use where smoking is unacceptable or prohibited." In 1987, the FDA exercised jurisdiction over products analogous to E-Cigarettes. Advanced Tobacco Products never challenged the Warning Letter and ceased all distribution of Favor. Ray's wife Brenda Coffee coined the term vaping. Philip Morris' division NuMark, launched in 2013 the MarkTen e-cigarette that Philip Morris had been working on since 1990.
==== Amnion ==== The amnion is avascular, meaning it does not contain its own blood vessels. Therefore, it must obtain necessary nutrients and oxygen from nearby chorionic and amniotic fluid, and fetal surface vessels. The amnion is characterised by cuboidal and columnar epithelial layers. The columnar cells are located in the vicinity of the placenta, whereas the cuboidal cells are found in the periphery. During early pregnancy, the amnionic epithelium is sparsely covered in microvilli, which increase in number throughout pregnancy. The function of this microvillous surface is associated with a densely-packed glycocalix with anionic binding sites; these are thought to be involved with intra-amnionic lipid synthesis. This amnionic epithelium is connected to a basement membrane, which is then attached by filaments to a connective tissue layer.
Sources: en.wikipedia.org
Mechano growth factor (MGF, IGF-IEc) is a naturally occurring 24-amino acid peptide which is the C-terminal fragment derived from enzymatic cleavage of insulin-like growth factor 1 (IGF-1). It is expressed during muscle repair following physical activity, and has anabolic effects. This has led to illicit use by athletes leading to MGF being banned by the World Anti-Doping Association. At least one research paper raised concerns about the potential carcinogenicity of this compound.
=== Pharmacodynamics === Seltorexant shows over 100-fold greater binding affinity for the OX2 receptor over the OX1 receptor. This is in contrast to other orexin receptor antagonists like suvorexant, lemborexant, and daridorexant, which are all dual orexin receptor antagonists (DORAs).
Breast milk supply increases in response to the baby's demand for milk and decreases when milk is allowed to remain in the breasts. When considering a possibly low milk supply, it is important to consider the difference between "perceived low milk supply" and "true low milk supply". Perceived low milk supply occurs when mothers, for a variety of reasons, believe that they are not making enough milk to feed their infant. These reasons may include fussiness, colic, preference for the bottle as opposed to the breast, long nursing duration, decreased sensation of breast fullness, and even decreased frequency of infant stools. However, in these cases, it is important to reassure the parent that infant weight gain is absolute proof of adequate milk intake. Thus, if the infant is breastfeeding exclusively and is gaining weight appropriately, then the parent can be reassured that they are producing enough milk. True low milk supply can be either primary (caused by medical conditions or anatomical issues in the mother), secondary (caused by not thoroughly and regularly removing milk from the breasts), or both. Primary causes may manifest before or during pregnancy, during labor, and even after birth. Secondary causes are far more common than primary ones. One study found that 15% of healthy first-time mothers had low milk supply 2–3 weeks after birth, with secondary causes accounting for at least two-thirds of those cases. Poor milk intake is signaled by poor infant weight gain, signs of dehydration, and hypoglycemia.
== History == Topiramate was discovered in 1979 by Bruce E. Maryanoff and Joseph F. Gardocki during their research work at McNeil Pharmaceuticals. Topiramate was first sold in 1996. Mylan Pharmaceuticals was granted final approval by the FDA for the sale of generic topiramate in the United States and the generic version was made available in September 2006. The last patent for topiramate in the U.S. was for use in children and expired on 28 February 2009.
In January 2026, the Moore administration reached annual pay agreements with six state employee unions, but failed to reach an agreement with AFSCME Maryland Council 3, the state's largest union of state government workers, by the December 31 deadline. Despite this, a pay increase for AFSCME-represented workers equivalent to agreements reached with several smaller unions that average 2% was included in Moore's fiscal year 2027 budget proposal.
Sources: en.wikipedia.org
=== Flagship facility === UPMC Presbyterian Shadyside is UPMC's primary flagship medical entity and represents the core of UPMC's academic, teaching, trauma, specialty and research-related facilities, serving as the system's primary academic hub and Pennsylvania's largest inpatient acute care hospital. UPMC Presbyterian Shadyside includes UPMC Presbyterian hospital and the physically conjoined UPMC Eye & Ear and UPMC Montefiore hospitals as well as the UPMC Western Psychiatric Hospital that also serves as the University of Pittsburgh's Thomas Detre Hall. These facilities are all located on the western side of the University of Pittsburgh's main campus in the Oakland neighborhood of Pittsburgh. The hospitals are also physically connected to the University of Pittsburgh School of Medicine's Scaife Hall, the University of Pittsburgh School of Nursing's Victoria Hall, Falk Clinic, three of the university's biomedical science towers, and the university's Lothrop Hall dormitory, all of which are surrounded by a variety of other academic facilities. UPMC Presbyterian Shadyside also encompasses the UPMC Shadyside hospital campus which includes the University of Pittsburgh Cancer Institute in the UPMC Hillman Cancer Center which are located near the university's Centre Plaza Apartments student housing. The UPMC Shadyside facilities are located in the adjacent neighborhood of Shadyside approximately 1.5 miles (2.4 km) from the Oakland-based hospitals and are connected by regular shuttle service.
=== With other depressant drugs === The concurrent use of opioids with other depressant drugs such as benzodiazepines or ethanol increases the rates of adverse events and overdose. Despite this, opioids and benzodiazepines are concurrently dispensed in many settings. As with an overdose of opioid alone, the combination of an opioid and another depressant may precipitate respiratory depression often leading to death. These risks are lessened with close monitoring by a physician, who may conduct ongoing screening for changes in patient behavior and treatment compliance.
=== Presence in ecstasy === In his 1993 book E for Ecstasy examining the uses of the street drug ecstasy in the United Kingdom, the writer, activist, and ecstasy advocate Nicholas Saunders highlighted test results showing that certain consignments of the drug also contained selegiline. Consignments of ecstasy known as "Strawberry" contained what Saunders described as a "potentially dangerous combination of ketamine, ephedrine and selegiline," as did a consignment of "Sitting Duck" Ecstasy tablets.
=== United Kingdom === The MHRA (Medicines and Healthcare Products Regulatory Agency) are responsible for the regulation of prescription medication in the UK. Trafficking of counterfeit medication into the UK has become a growing problem, with ever increasing numbers of illicit drugs confiscated at the UK border. A large portion of the medication coming into the UK constitutes erectile dysfunction medication smuggled from abroad, one of the most popular of which is Kamagra (Sildenafil Citrate). To help combat the issue of counterfeit drugs, the European Union directive on false medicines was published in January 2013. This came into effect in February 2019 and requires UK licensed medicine to have a unique identifier (UI) and an anti tamper device on each pack of medication. Every Pharmacy dispensing the medication is required to check the anti tamper device and update the FMD online system every time a pack has been issued. In November 2025, the UK's Medicines and Healthcare products Regulatory Agency warned that organised crime groups had begun producing counterfeit versions of weight-loss drugs such as semaglutide, using sophisticated fake packaging that closely mimicked legitimate products. The agency cautioned that these illicit versions pose serious health risks to consumers.
Sources: en.wikipedia.org
Cardarine is a common name for GW501516, a synthetic PPARδ agonist. It is not a steroid or a selective androgen receptor modulator. It was developed and studied as a research compound for metabolic pathways.
It binds to and activates PPARδ, a nuclear receptor that regulates genes related to fatty acid oxidation and energy use. This activation alters transcription in tissues such as skeletal muscle and liver. The full range of downstream effects in humans is not fully established.
No, cardarine is not known to occur naturally in plants, animals, or humans. It is a synthetic molecule produced for laboratory research. Products labeled as cardarine should therefore be treated as manufactured chemicals with variable purity.
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.