Everything below concerns research chemical. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2025-12-18. Numbers and descriptions here follow the published literature rather than marketing material.
Anti-doping laboratories identify GW501516 and related metabolites using liquid chromatography coupled with tandem mass spectrometry. Urine is the most common matrix, though blood and dried blood spots may also be analyzed. The method targets the parent compound and phase I and phase II metabolites, which extend the detection window. Because the substance is prohibited at all times, athletes can be tested outside competition. Detection limits and windows depend on the assay, sample type, and individual metabolism.
Cardarine is frequently described as a fat-burning or endurance-enhancing supplement, but these claims exceed the available evidence. The compound is not a hormone, steroid, or selective androgen receptor modulator. Research articles discuss it as a tool compound for studying PPARδ biology, while anti-doping literature focuses on its abuse and detection. Quality of unapproved products is uncertain, and independent analyses have found impurities or incorrect labeling. Open questions include whether human cancer risk resembles that seen in rodents and how often non-athletes use the substance.
Cardarine has no approved therapeutic indication and is not marketed as a medicine. The World Anti-Doping Agency lists GW501516 as a prohibited substance at all times, covering both in-competition and out-of-competition periods. National laws vary: some countries treat it as an unapproved drug subject to import controls, while others have specific restrictions on sale for human consumption. It is often sold as a research chemical, a label that does not imply safety or legality. Enforcement actions have targeted online vendors and shipments.
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.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Prohibited in sport; not approved as medicine | Listed by WADA at all times. |
| Common synonyms | GW501516, GW-501516, endurobol | Cardarine is a colloquial name. |
| Typical analytical method | LC-MS/MS | Detects parent compound and metabolites. |
| Common test matrix | Urine | Blood and dried blood spots also possible. |
| Legal classification | Varies by country | Often treated as unapproved drug or research chemical. |
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.
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.
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.
PPARδ is a nuclear receptor that influences transcription of genes involved in fatty acid oxidation, lipid transport, and energy homeostasis. GW501516 binds and activates this receptor with high selectivity relative to PPARα and PPARγ in laboratory assays. Activation alters expression of target genes in skeletal muscle, liver, and adipose tissue in animal models. The exact clinical consequences of these changes in humans remain incompletely characterized, and observed effects in animals do not establish therapeutic benefit or safety.
Published studies have examined GW501516 in animal models of obesity, insulin resistance, and exercise endurance. Early human trials reportedly ended, and development was discontinued after preclinical findings raised concerns about cancer in some rodent studies. Regulatory agencies have not approved cardarine for any medical use. Its availability through non-pharmaceutical channels raises questions about identity, purity, and legal status that are separate from its laboratory pharmacology. Those questions are often addressed through analytical testing rather than assumptions about product labels.
Cardarine is a common name for GW501516, also GW-1516, a synthetic compound developed as a peroxisome proliferator-activated receptor delta (PPARδ) agonist. It belongs to a class of agents that modulate gene transcription related to lipid and energy metabolism. The compound was studied in preclinical and early clinical research for metabolic and cardiovascular conditions, but it did not progress to approved therapeutic use. Its name appears in fitness and sports contexts despite not being approved as a drug.
Cardarine can be detected in biological samples and product materials using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The method separates compounds by chromatography and identifies them by mass-to-charge transitions, allowing low-level detection in urine or blood. Sample preparation often involves enzymatic hydrolysis, solid-phase extraction, or protein precipitation. Certified reference materials and isotope-labeled internal standards improve quantification. Detection windows depend on metabolism, matrix, and assay sensitivity, so no single universal window applies.
Regulatory treatment of cardarine differs by context and jurisdiction. In competitive sport, the World Anti-Doping Agency lists PPARδ agonists, including GW501516, as prohibited at all times. Outside sport, it lacks approval as a prescription medicine in major drug markets, and products sold for human consumption may be treated as unapproved drugs. Some countries also restrict importation or sale through general consumer protection and medicines laws. These classifications affect availability, testing, and legal risk without establishing therapeutic value.
Because cardarine is not an approved medicine, no pharmacopeial monograph defines its identity, purity, or storage requirements. Laboratories typically rely on in-house methods and reference standards when testing materials labeled as GW501516. Certificates of analysis may report purity and identity for a specific batch, but their scope varies and they do not guarantee safety or legal status. Independent verification can include high-performance liquid chromatography, mass spectrometry, nuclear magnetic resonance, and elemental analysis. The distinction between research chemical labeling and human use is significant because quality standards and oversight differ.
==== Corporate logos on pills ==== A number of ecstasy manufacturers brand their pills with a logo, often that of an unrelated corporation. Some pills depict logos of products or media popular with children, such as Shaun the Sheep.
=== In English translation === Kermani, Navid (2011). The Terror of God: Attar, Job and the Metaphysical Revolt. Translated by Wieland Hoban. Cambridge, UK: Polity. ISBN 978-0-7456-4527-8. OCLC 668946700. Kermani, Navid (2015). God is Beautiful: The Aesthetic Experience of the Quran. Translated by Tony Crawford. Cambridge, UK: Polity Press. ISBN 978-0745651675. OCLC 881418248. Kermani, Navid (2016). Between Quran and Kafka: West-eastern Affinities. Translated by Tony Crawford. Cambridge, UK: Polity Press. ISBN 978-1-5095-0033-8. OCLC 940342167. Kermani, Navid (2017). Upheaval: The Refugee Trek through Europe. Translated by Tony Crawford. Cambridge, UK: Polity Press. ISBN 978-1-5095-1868-5. OCLC 982184554. Kermani, Navid (2017). Wonder Beyond Belief: On Christianity. Translated by Tony Crawford (English ed.). Cambridge, UK: Polity Press. ISBN 978-1509514847. (2018 Schlegel-Tieck Prize.) Kermani, Navid (2018). State of Emergency: Travels in a Troubled World. Translated by Tony Crawford. Cambridge, UK: Polity. ISBN 978-1-5095-1470-0. Kermani, Navid (2019). Love Writ Large. Translated by Alexander Booth. London: Seagull Books. ISBN 978-0-85742-602-4. OCLC 1051682987. Kermani, Navid (2020). Along the Trenches: A Journey through Eastern Europe to Isfahan. Translated by Tony Crawford. Cambridge, UK: Polity Press. ISBN 978-1-5095-3557-6. OCLC 1097364913. Kermani, Navid (2022). Tomorrow Is Here: Speeches. Translated by Tony Crawford. Cambridge, UK: Polity Press. ISBN 978-1-5095-5056-2. OCLC 1292971292. Kermani, Navid (2023).
Wintergreen is a group of aromatic plants. The term wintergreen once commonly referred to plants that remain green (continue photosynthesis) throughout the winter. The term evergreen is now more commonly used for this characteristic. Most species of the shrub genus Gaultheria demonstrate this characteristic and are called wintergreens in North America, the most common generally being the American wintergreen (Gaultheria procumbens). Wintergreens in the genus Gaultheria contain an aromatic compound, methyl salicylate, and are used as a mintlike flavoring.
Cannabis has been one of the most used psychoactive drugs in the world since the late 20th century, following only tobacco and alcohol in popularity. According to Vera Rubin, the use of cannabis has been encompassed by two major cultural complexes over time: a continuous, traditional folk stream, and a more circumscribed, contemporary configuration. The former involves both sacred and secular use, and is usually based on small-scale cultivation: the use of the plant for cordage, clothing, medicine, food, and a "general use as an euphoriant and symbol of fellowship." The second stream of expansion of cannabis use encompasses "the use of hemp for commercial manufacturers utilizing large-scale cultivation primarily as a fiber for mercantile purposes"; but it is also linked to the search for psychedelic experiences (which can be traced back to the formation of the Parisian Club des Hashischins).
=== Human Diseases and Gene Mutations === Greenspan has conducted various research projects directly on the molecular bases of human diseases. A collaborative study with a group at Jefferson Medical College showed mutations in the COL7A1 gene, for type VII collagen, to be the basis of the disabling and fatal skin disease dystrophic epidermolysis bullosa These studies also led to elucidation of the complete intron-exon structure of COL7A1 which at the time had more exons than any previously described gene. His lab was the first to clone and characterize the α1 chain of type V collagen and was also key in the first demonstration that mutations in a type V collagen gene can cause the heritable connective tissue disorder classic Ehers-Danlos syndrome. Accompanying and following these studies, the Greenspan lab has performed studies on collagen V genes and on the biosynthesis of type V collagen and on the molecular mechanisms whereby mutations in type V collagen result in defects in mammalian tissues. Their studies have also shown autoimmunity against type V collagen to be involved in organ transplant rejection and atherosclerosis, and that induction of immune tolerance to type V collagen can help ameliorate atherosclerosis. The Greenspan lab was also the first to clone and characterize the α3 chain of type V collagen and showed the α3(V) chain to be important to the functioning of certain highly specialized cell types and to be important to tumor growth and survival times in breast cancer.
Sources: en.wikipedia.org
== Composition == Most hotspot volcanoes are basaltic (e.g., Hawaii, Tahiti). As a result, they are less explosive than subduction zone volcanoes, in which water is trapped under the overriding plate. Where hotspots occur in continental regions, basaltic magma rises through the continental crust, which melts to form rhyolites which can form violent eruptions. For example, the Yellowstone Caldera was formed by some of the most powerful volcanic explosions in geologic history. However, when the rhyolite is completely ejected, it may be followed by eruptions of basaltic magma rising through the same lithospheric fissures (cracks in the lithosphere). An example of this activity is the Ilgachuz Range in British Columbia, which was created by an early complex series of trachyte and rhyolite eruptions, and late extrusion of a sequence of basaltic lava flows. The hotspot hypothesis is now closely linked to the mantle plume hypothesis. The detailed compositional studies now possible on hotspot basalts have allowed linkage of samples over the wider areas often implicate in the later hypothesis, and its seismic imaging developments.
== Books and articles == Dobbs, G. Michael (2015). Escape – How Animation Broke into the Mainstream in the 1990s. Orlando: BearManor Media. ISBN 978-1593931100. Finley, Laura L. (2018). Violence in Popular Culture American and Global Perspectives. Santa Monica: ABC-CLIO. ISBN 9781440854330. Komorowski, Thad (2017). Sick Little Monkeys: The Unauthorized Ren & Stimpy Story. Albany, Georgia: BearManor Media. ISBN 978-1629331836.
In order for a protonated acid to lose a proton, the pH of the system must rise above the pKa of the acid. The decreased concentration of H+ in that basic solution shifts the equilibrium towards the conjugate base form (the deprotonated form of the acid). In lower-pH (more acidic) solutions, there is a high enough H+ concentration in the solution to cause the acid to remain in its protonated form. Solutions of weak acids and salts of their conjugate bases form buffer solutions. To determine the concentration of an acid in an aqueous solution, an acid–base titration is commonly performed. A strong base solution with a known concentration, usually NaOH or KOH, is added to neutralize the acid solution according to the color change of the indicator with the amount of base added. The titration curve of an acid titrated by a base has two axes, with the base volume on the x-axis and the solution's pH value on the y-axis. The pH of the solution always goes up as the base is added to the solution.
CDs and DVDs have a polycarbonate surface and metal reflective layer which allow for storage and retrieval of information. The metal film is sometimes made of pure gold which is highly stable and has ideal optical properties. The metal can act as a substrate which allows compounds to bind to it. This alters the reflective and refractive properties of the disk. Disk reading is based on capturing analog signals with the disk drive. The signals are indicative of how much analyte is in a sample. Because the disk spins, the platform has the ability to drive the sample through it through microfluidic channels and for multiple steps to be performed, allowing the possibility for sample preparation and more than one analysis to be conducted during a single run. CD/DVD based assays could potentially be used for any immunoassay already in use and many assays used in analytical chemistry, as long as analytes have a corresponding probe, are soluble, and are large enough to alter the angle of incident.
Sources: en.wikipedia.org
An international study, using modelling and literature assessment, codifies, integrates into and quantifies "safe and just Earth system boundaries" (ESBs) with the context of Earth system stability and minimization of human harm. They expand upon earlier boundary frameworks by incorporating concepts such as intra- and intergenerational justice, propose that their framework may better enable a quantitative foundation for safeguarding the global commons, and report many of the ESBs are already exceeded. Healthcare systems related results are published: large increases in medication prices via sustained decrease in their use can cause poorer disease control (8 May), widespread implementation of the particular Alzheimer's disease therapeutic solution lecanemab may increase annual U.S. Medicare spending by $2.0 to $5.1 billion (11 May), mailed HPV self-collection kits with scheduling assistance can lead to greater uptake of cervical cancer screening (11 May), cost-related medication nonadherence occurs in approximately 1 in 5 older adults in the U.S. in 2022 (18 May), and a QALY-based health economics study evaluates the cost-effectiveness of U.S. population-wide screening for CKD (23 May).
During the 13th century, Ghanaians developed their art of adinkra printing. Hand-printed and hand-embroidered adinkra clothes were made and used exclusively by royalty for devotional ceremonies. Each of the motifs that make up the corpus of adinkra symbolism has a name and meaning derived from a proverb, a historical event, human attitude, ethology, plant life-form, or shapes of inanimate and man-made objects. The meanings of the motifs may be categorised into aesthetics, ethics, human relations, and concepts. The Adinkra symbols have a decorative function as tattoos and also represent objects that encapsulate evocative messages that convey traditional wisdom, aspects of life, or the environment. There are symbols with meanings, with some linked with proverbs. In the words of Anthony Appiah, they were one of the means in a pre-literate society for "supporting the transmission of a complex and nuanced body of practice and belief". Kente cloth, the traditional or national cloth of Ghana, is worn by most southern Ghanaian ethnic groups, especially, the Akan Along with the adinkra cloth, Ghanaians use cloth fabrics for their traditional attire. The different ethnic groups have their own individual cloth. The most well known is the Kente cloth. Kente is a national costume and clothing, and these clothes are used to make traditional and modern Kente attire. Different symbols and colours mean different things. Kente is a ceremonial cloth hand-woven on a horizontal treadle loom and strips measuring about 4 inches wide are sewn together into larger pieces of cloths.
== See also == Bruise, which is a hematoma caused by trauma Purpura secondary to clotting disorders Purpura hemorrhagica in horses Pigmented purpuric dermatosis Schamberg disease (progressive pigmentary purpura)
Sources: en.wikipedia.org
Legal status varies by country. It is not approved as a medicine, and it is prohibited in sport. Some jurisdictions restrict import, sale, or possession.
Laboratories use liquid chromatography-tandem mass spectrometry to detect GW501516 and its metabolites. Urine is commonly tested, and testing can occur in and out of competition.
No, cardarine is not a SARM. It is a PPARδ agonist, which acts on a different receptor. The two classes are often confused in online discussions.
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.