GW501516 raises a handful of sensible questions. This page answers them in order, starting with the fundamentals and moving to applications.
Reviewed 2025-12-21. Anything still debated is marked as such rather than presented as settled.
Cardarine is the common name for GW501516, a synthetic compound studied as a peroxisome proliferator-activated receptor delta agonist. Researchers developed it to explore treatments for lipid disorders and metabolic conditions. It is not an approved medicine in any country. Early clinical work examined changes in HDL cholesterol and triglycerides, but development was discontinued after animal studies raised concerns about cancer. The compound remains available as a research chemical and appears in discussions of performance enhancement.
At the molecular level, GW501516 binds and activates PPARδ, a nuclear receptor that regulates transcription. Activation shifts expression of genes involved in fatty acid oxidation, energy expenditure, and lipid transport in skeletal muscle and liver. Animal studies report increased endurance and altered lipid profiles after exposure. Human data are limited to small trials and do not establish long-term safety or efficacy. PPARδ also has roles in cell proliferation, so the relationship between activation and cancer risk remains an open question.
Published literature on cardarine includes in vitro assays, rodent experiments, and a small number of human studies. Reports describe effects on exercise capacity and lipid metabolism in animals, while human evidence is sparse. Many online descriptions present the compound as a proven endurance aid, a claim not supported by regulatory approval or large clinical trials. Analytical studies focus on identifying the parent compound and its metabolites in biological samples. Important uncertainties include species differences, dose-response relationships, and the relevance of rodent tumor findings to humans.
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.
| Property | Value | Notes |
|---|---|---|
| Common name | Cardarine | Also called GW501516 and endurobol. |
| Chemical formula | C21H18F3NO3S2 | Molecular weight about 453.5 g/mol. |
| Appearance | White to off-white solid | Form depends on synthesis and purity. |
| Solubility | Soluble in DMSO and ethanol | Low solubility in water. |
| Typical storage | -20 °C, desiccated, protected from light | Common for research chemicals. |
Brian David Strahl (born 1970) is an American biochemist and molecular biologist. He is currently a professor in the Department of Biochemistry & Biophysics at the University of North Carolina at Chapel Hill. Strahl is known for his research in the field of chromatin biology and histone modifications. Strahl, with C. David Allis proposed the “histone code hypothesis”.
=== Religions === Some religions believe that one is not supposed to consume a non-medical, psychoactive substance, or believe that one is not supposed to consume a substance that is addictive. The Seventh-day Adventist Church asked for its members to "abstain from caffeinated drinks", but has removed this from baptismal vows (while still recommending abstention as policy). The Church of Jesus Christ of Latter-day Saints has said the following with regard to caffeinated beverages: "... the Church revelation spelling out health practices (Doctrine and Covenants 89) does not mention the use of caffeine. The Church's health guidelines prohibit alcoholic drinks, smoking or chewing of tobacco, and 'hot drinks' – taught by Church leaders to refer specifically to tea and coffee." Gaudiya Vaishnavas generally also abstain from caffeine, because they believe it clouds the mind and overstimulates the senses. To be initiated under a guru, one must have had no caffeine, alcohol, nicotine or other drugs, for at least a year. Caffeinated beverages are widely consumed by Muslims. In the 16th century, some Muslim authorities made unsuccessful attempts to ban them as forbidden "intoxicating beverages" under Islamic dietary laws.
The progenitor of the Samoyeds was the Nenets Herding Laika, a reindeer herding spitz commonly used throughout the Arctic, especially the Nenets people, who were pejoratively referred to as Samoyeds at that time. DNA evidence confirms that Samoyeds are a basal breed that predates the emergence of the modern breeds in the 19th century. A genomic study of two dog specimens nearly 100 years old obtained from the Nenets people on the Yamal Peninsula found that these are related to two specimens dated 2,000 years old and 850 years old, which suggests continuity of the lineage in this region. The two 100-year-old dogs were closely related with the Samoyed breed, which indicates that the ancient Arctic lineage lives on in the modern Samoyed dog.
Sources: en.wikipedia.org
As more African-Americans are incarcerated, the more the heuristic is enforced in the eyes of the courts, which contributes to yet higher imprisonment rates among African-American children. High numbers of African American arrests and charges of possession show that although most drug users in the United States are white, blacks are the largest group being targeted as the root of the problem. Furthermore, a study by Andrew Golub, Bruce Johnson, and Eloise Dunlap affirms the racial divide in drug arrests, notably marijuana arrests, where blacks with no prior arrests (0.9%) or one prior arrest (4.3%) were nearly twice as likely to be sentenced to jail as their white counterparts (0.4% and 2.3%, respectively). Harboring such emotions can lead to a lack of will to contact the police in case of an emergency by members of African-American communities, ultimately leaving many people unprotected. Disproportionate arrests in African-American communities for drug-related offenses has not only spread fear but also perpetuated a deep distrust for government and what some call racist drug enforcement policy. Additionally, a black-white disparity can be seen in probation revocation since black probationers were revoked at higher rates than white and Hispanic probationers in studies as published under the Urban Institute.
== Further reading == Love, Spencie (1996), One Blood: The Death and Resurrection of Charles R. Drew, Chapel Hill: University of North Carolina Press. Organ, Claude H. (ed.) (1987), A Century of Black Surgeons: The USA Experience, Vol. 1, Transcript Press, Asa G. Yancer Sr., "The Life Of Charles R. Drew, MD". Schraff, Anne E. (2003), Dr. Charles Drew: Blood Bank Innovator, Enslow. Wynes, Charles E. (1988), Charles Richard Drew: The Man and the Myth, University of Illinois Press.
In situations where the partial pressure of oxygen in the water is low, diffusion of oxygen into the blood is reduced, Henry's law can explain this phenomenon. The law states that at equilibrium, the partial pressure of oxygen in water will be equal to that in air; but the concentrations will differ due to the differing solubility. This law explains why O. vulgaris has to alter the amount of water cycled through its mantle cavity as the oxygen concentration in water changes. The gills are in direct contact with water – carrying more oxygen than the blood – that has been brought into the mantle cavity of the octopus. Gill capillaries are quite small and abundant, which creates an increased surface area that water can come into contact with, thus resulting in enhanced diffusion of oxygen into the blood. Some evidence indicates that lamellae and vessels within the lamellae on the gills contract to aid in propelling blood through the capillaries.
== Activation == Although TGF-β is important in regulating crucial cellular activities, only a few TGF-β activating pathways are currently known, and the full mechanism behind the suggested activation pathways is not yet well understood. Some of the known activating pathways are cell or tissue specific, while some are seen in multiple cell types and tissues. Proteases, integrins, pH, and reactive oxygen species are just few of the currently known factors that can activate TGF-β, as discussed below. It is well known that perturbations of these activating factors can lead to unregulated TGF-β signaling levels that may cause several complications including inflammation, autoimmune disorders, fibrosis, cancer and cataracts. In most cases, an activated TGF-β ligand will initiate the TGF-β signaling cascade as long as TGF-β receptors I and II are available for binding. This is due to a high affinity between TGF-β and its receptors, suggesting why the TGF-β signaling recruits a latency system to mediate its signaling.
Sources: en.wikipedia.org
British Pharmacopoeia (BP): Purified water Japanese Pharmacopoeia (JP): Purified water European Pharmacopoeia (Ph Eur): Aqua purificata The United States Pharmacopoeia (USP): Purified water Note: Purified Water is typically a main monograph which references other applications that use Ultrapure water Ultrapure water is often used as a critical utility for cleaning applications (as required). It is also used to generate clean steam for sterilization. The following table summarizes the specifications of two major pharmacopoeias for 'water for injection': Pharmacopoeia specifications for water for injection
==== Public ==== The protein export scandal inspired a significant amount of US media attention to Chinese food safety concerns, and increased unease about Chinese imports amongst the American public. A July 2007 Consumer Reports poll found that 92 percent of Americans favored "country of origin" labeling on meat products, while in a USA Today/Gallup poll, 74 percent of US respondents said they were "somewhat concerned" or "very concerned" about the safety of food imported from China.
This is useful in drug analysis where the pharmaceutical is a combination drug since the components would separate, or elute, at different times allowing for the verification of each component. The eluates from the HPLC column are then fed into various detectors that produce a peak on a graph relative to its concentration as it elutes off the column. The most common type of detector is an ultraviolet-visible spectrometer as the most common item of interest tested with HPLC, pharmaceuticals, have UV absorbance. Gas chromatography (GC) performs the same function as liquid chromatography, but it is used for volatile mixtures. In forensic chemistry, the most common GC instruments use mass spectrometry as their detector. GC-MS can be used in investigations of arson, poisoning, and explosions to determine exactly what was used. In theory, GC-MS instruments can detect substances whose concentrations are in the femtogram (10−15) range. However, in practice, due to signal-to-noise ratios and other limiting factors, such as the age of the individual parts of the instrument, the practical detection limit for GC-MS is in the picogram (10−12) range. GC-MS is also capable of quantifying the substances it detects; chemists can use this information to determine the effect the substance would have on an individual. GC-MS instruments need around 1,000 times more of the substance to quantify the amount than they need simply to detect it; the limit of quantification is typically in the nanogram (10−9) range.
The shallot ( or ) is a cultivar group of the onion. Until 2010, the (French red) shallot was classified as a separate species, Allium ascalonicum. The taxon was synonymized with Allium cepa (the common onion) in 2010, as the difference was too small to justify a separate species. As part of the onion genus Allium, its close relatives include garlic, scallions, leeks, chives, and the Chinese onion.
=== Cattle === In dairy cattle, ketosis commonly occurs during the first weeks after giving birth to a calf and is sometimes referred to as acetonemia. This is most likely the result of an energy deficit when intake is inadequate to compensate for the increased metabolic demand of lactating. The elevated β-hydroxybutyrate concentrations can depress gluconeogenesis, feed intake and the immune system, as well as have an impact on milk composition. Point of care diagnostic tests can be useful to screen for ketosis in cattle.
Sources: en.wikipedia.org
Cardarine is a common name for the investigational compound GW501516. It acts as a PPARδ agonist and is not approved for human use. It is prohibited in sport.
It activates PPARδ, a nuclear receptor that influences gene expression related to lipid and energy metabolism. Animal studies show changes in endurance and lipid levels. Human effects and risks are not well established.
No, cardarine is not a steroid. It belongs to a different chemical class, the PPARδ agonists. It is also not a selective androgen receptor modulator.
No. Cardarine is GW501516, a PPARδ agonist, while SARMs act on androgen receptors. The two classes are often grouped in informal discussions despite different mechanisms.