The short version of Prohibited substance fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2026-08-01. Anything still debated is marked as such rather than presented as settled.
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.
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.
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.
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.
| 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. |
The pharmacological interest in cardarine centers on PPARδ activation and its downstream effects on lipid handling and mitochondrial function. In animal studies, PPARδ agonists have been associated with changes in exercise endurance and fatty acid utilization, though results vary by model and protocol. Human data remain sparse, and the absence of large controlled trials limits conclusions about efficacy. Researchers often describe the compound as a tool for probing PPARδ biology rather than a proven therapeutic agent.
Safety discussions about cardarine frequently cite rodent carcinogenicity findings reported in the 2000s. In those studies, treated animals developed tumors at multiple sites, leading sponsors to discontinue clinical development. The relevance of these findings to humans has not been resolved, but they are a major reason the compound is not approved. Current literature emphasizes uncertainty about long-term effects and the risks of unregulated use. Regulators and health agencies have not established a safe human exposure level.
Cardarine is a synthetic compound also known as GW501516, GW-501516, and sometimes endurobol. It was developed as a selective agonist of peroxisome proliferator-activated receptor delta, a nuclear receptor involved in fatty acid oxidation and energy metabolism. The compound was studied in preclinical models for metabolic and cardiovascular conditions, but it did not become a marketed human medicine. In regulatory and anti-doping contexts, it is treated as a prohibited substance rather than a licensed medicine.
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.
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.
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 a common name for the investigational chemical GW501516, also written GW-1516. It was developed as a peroxisome proliferator-activated receptor delta agonist for metabolic conditions such as dyslipidemia. Early research focused on lipid handling and energy use in skeletal muscle and other tissues. The compound was never approved as a medicine. In public discussion, it is often grouped with performance-enhancing substances, although its receptor target differs from that of anabolic steroids or selective androgen receptor modulators. Regulatory and health authorities have issued warnings about its use.
=== Lithuania === Lithuanian Armed Forces field rations are based on the American MRE. They come in 10 menus packed in a dark green plastic bag, and besides the main meal in a retort pouch they also include two small dark chocolate bars, honey or jam, four hard-tack biscuits, a handful of almonds or hazelnuts, instant drink mix, tea or coffee, sugar, an antiseptic wipe, matches, solid fuel tablets, a flat disposable stove, a flameless heater (similar to the US one) and a cable-tie used to seal waste packaging back into the outer bag after use.
==== MeSH D13.444.735 – rna ==== MeSH D13.444.735.130 – rna, algal MeSH D13.444.735.150 – rna, antisense MeSH D13.444.735.150.319 – micrornas MeSH D13.444.735.150.640 – oligoribonucleotides, antisense MeSH D13.444.735.150.700 – rna, small interfering MeSH D13.444.735.300 – rna, archaeal MeSH D13.444.735.473 – rna, bacterial MeSH D13.444.735.476 – rna, chloroplast MeSH D13.444.735.480 – rna, complementary MeSH D13.444.735.490 – rna, double-stranded MeSH D13.444.735.500 – rna, fungal MeSH D13.444.735.520 – rna, helminth MeSH D13.444.735.544 – rna, messenger MeSH D13.444.735.544.355 – codon MeSH D13.444.735.544.355.225 – codon, initiator MeSH D13.444.735.544.355.250 – codon, terminator MeSH D13.444.735.544.355.250.235 – codon, nonsense MeSH D13.444.735.544.500 – rna caps MeSH D13.444.735.544.500.710 – rna cap analogs MeSH D13.444.735.544.527 – rna, messenger, stored MeSH D13.444.735.544.550 – rna splice sites MeSH D13.444.735.544.875 – untranslated regions MeSH D13.444.735.544.875.880 – 3' untranslated regions MeSH D13.444.735.544.875.885 – 5' untranslated regions MeSH D13.444.735.615 – rna, neoplasm MeSH D13.444.735.628 – rna, nuclear MeSH D13.444.735.628.806 – rna, heterogeneous nuclear MeSH D13.444.735.628.818 – rna, small nuclear MeSH D13.444.735.628.818.800 – rna, small nucleolar MeSH D13.444.735.635 – rna, plant MeSH D13.444.735.635.575 – rna, chloroplast MeSH D13.444.735.640 – rna precursors MeSH D13.444.735.650 – rna, protozoan MeSH D13.444.735.686 – rna, ribosomal MeSH D13.444.735.686.650 – rna, ribosomal, 5s MeSH D13.444.735.686.660 – rna, ribosomal, 5.8s MeSH D13.444.735.686.670 – rna, ribosomal, 16s MeSH D13.444.735.686.675 – rna, ribosomal, 18s MeSH D13.444.735.686.680 – rna, ribosomal, 23s MeSH D13.444.735.686.690 – rna, ribosomal, 28s MeSH D13.444.735.686.845 – rna, ribosomal, self-splicing MeSH D13.444.735.721 – rna, satellite MeSH D13.444.735.721.250 – cucumber mosaic virus satellite MeSH D13.444.735.757 – rna, transfer MeSH D13.444.735.757.286 – anticodon MeSH D13.444.735.757.700 – rna, transfer, amino acid-specific MeSH D13.444.735.757.700.050 – rna, transfer, ala MeSH D13.444.735.757.700.075 – rna, transfer, arg MeSH D13.444.735.757.700.085 – rna, transfer, asn MeSH D13.444.735.757.700.090 – rna, transfer, asp MeSH D13.444.735.757.700.200 – rna, transfer, cys MeSH D13.444.735.757.700.400 – rna, transfer, gln MeSH D13.444.735.757.700.410 – rna, transfer, glu MeSH D13.444.735.757.700.420 – rna, transfer, gly MeSH D13.444.735.757.700.450 – rna, transfer, his MeSH D13.444.735.757.700.480 – rna, transfer, ile MeSH D13.444.735.757.700.500 – rna, transfer, leu MeSH D13.444.735.757.700.510 – rna, transfer, lys MeSH D13.444.735.757.700.525 – rna, transfer, met MeSH D13.444.735.757.700.650 – rna, transfer, phe MeSH D13.444.735.757.700.660 – rna, transfer, pro MeSH D13.444.735.757.700.700 – rna, transfer, ser MeSH D13.444.735.757.700.725 – rna, transfer, thr MeSH D13.444.735.757.700.740 – rna, transfer, trp MeSH D13.444.735.757.700.750 – rna, transfer, tyr MeSH D13.444.735.757.700.900 – rna, transfer, val MeSH D13.444.735.757.715 – rna, transfer, amino acyl MeSH D13.444.735.790 – rna, untranslated MeSH D13.444.735.790.099 – micrornas MeSH D13.444.735.790.149 – regulatory sequences, ribonucleic acid MeSH D13.444.735.790.199 – rna, catalytic MeSH D13.444.735.790.400 – rna, guide MeSH D13.444.735.790.530 – rna, small cytoplasmic MeSH D13.444.735.790.537 – rna, small interfering MeSH D13.444.735.790.545 – rna, small nuclear MeSH D13.444.735.790.545.800 – rna, small nucleolar MeSH D13.444.735.790.560 – rna, spliced leader MeSH D13.444.735.790.878 – untranslated regions MeSH D13.444.735.790.878.880 – 3' untranslated regions MeSH D13.444.735.790.878.885 – 5' untranslated regions MeSH D13.444.735.828 – rna, viral
== Structure == The 3D structure of human serum albumin has been determined by X-ray crystallography to a resolution of 2.5 ångströms (250 pm). Albumin is a 65–70kDa protein. Albumin comprises three homologous domains that assemble to form a heart-shaped protein. Each domain is a product of two subdomains that possess common structural motifs. The principal regions of ligand binding to human serum albumin are located in hydrophobic cavities in subdomains IIA and IIIA, which exhibit similar chemistry. Structurally, the serum albumins are similar, each domain containing five or six internal disulfide bonds.
== White LEDs == There are two primary ways of producing white light-emitting diodes (WLED). One is to use individual LEDs that emit three primary colors—red, green and blue—and then mix all the colors to form white light. The other, more common method is to use a phosphor material to convert monochromatic light from a blue or UV LED to broad-spectrum white light, similar to a fluorescent lamp. The yellow phosphor is made of cerium-doped YAG crystals suspended in the package or coated on the LED. This YAG phosphor causes white LEDs to appear yellow when off, and the spaces between the crystals allow some blue light to pass through in LEDs with partial phosphor conversion. Alternatively, white LEDs may use other phosphors like manganese(IV)-doped potassium fluorosilicate (PFS). PFS assists in red light generation, and is used in conjunction with a conventional Ce:YAG phosphor. In LEDs with PFS phosphor, some blue light passes through the phosphors, the Ce:YAG phosphor converts blue light to green and red (yellow) light, and the PFS phosphor converts blue light to red light. The color emission spectrum or color temperature of white phosphor-converted and other phosphor-converted LEDs can be controlled by changing the concentration of several phosphors that form a phosphor blend used in an LED package. The 'whiteness' of the light produced is engineered to suit the human eye. Because of metamerism, it is possible to have quite different spectra that appear white. The appearance of objects illuminated by that light may vary as the spectrum varies.
==== Knight/Dame Commander of the Royal Victorian Order (KCVO / DCVO) ==== Rowena Jane Feilden, , Lady in Waiting to The Princess Royal. Colonel Edward Thomas Bolitho, , Lord-Lieutenant of Cornwall. The Very Reverend Dr David Michael Hoyle, , Dean of Westminster Abbey, on the occasion of the Coronation of Their Majesties The King and The Queen.
Sources: en.wikipedia.org
== Further reading == Chesnut, D. B.; Savin, A. (1999). "The Electron Localization Function (ELF) Description of the PO Bond in Phosphine Oxide". Journal of the American Chemical Society. 121 (10): 2335–2336. Bibcode:1999JAChS.121.2335C. doi:10.1021/ja984314m. Alkorta, Ibon; Sánchez-Sanz, Goar; Elguero, José; Del Bene, Janet E. (2014). "Pnicogen Bonds between X═PH3 (X = O, S, NH, CH2) and Phosphorus and Nitrogen Bases". The Journal of Physical Chemistry A. 118 (8): 1527–1537. Bibcode:2014JPCA..118.1527A. doi:10.1021/jp411623h. PMID 24547683.
=== Plants === Plants also have receptors that can cause a response to chitin, namely chitin elicitor receptor kinase 1 and chitin elicitor-binding protein. The first chitin receptor was cloned in 2006. When the receptors are activated by chitin, genes related to plant defense are expressed, and jasmonate hormones are activated, which in turn activate systemic defenses. Commensal fungi have ways to interact with the host immune response that, as of 2016, were not well understood. Some pathogens produce chitin-binding proteins that mask the chitin they shed from these receptors.
Somalia's foreign relations are handled by the President as the head of state, the Prime Minister as the head of government, and the federal Ministry of Foreign Affairs. According to Article 54 of the national constitution, the allocation of powers and resources between the Federal Government and the Federal Republic of Somalia's constituent Federal Member States shall be negotiated and agreed upon by the Federal Government and the Federal Member States, except in matters pertaining to foreign affairs, national defence, citizenship and immigration, and monetary policy. Article 53 also stipulates that the Federal Government shall consult the Federal Member States on major issues related to international agreements, including negotiations vis-a-vis foreign trade, finance and treaties. The Federal Government maintains bilateral relations with a number of other central governments in the international community. Among these are Djibouti, Ethiopia, Egypt, the United Arab Emirates, Yemen, Turkey, Italy, the United Kingdom, Denmark, France, the United States, the People's Republic of China, Japan, Russian Federation and South Korea. Additionally, Somalia has several diplomatic missions abroad. There are likewise various foreign embassies and consulates based in the capital Mogadishu and elsewhere in the country. Somalia is also a member of many international organisations, such as the United Nations, African Union and Arab League. It was a founding member of the Organisation of Islamic Cooperation in 1969.
In contrast, FSL Kode constructs usually use specifically selected peptide fragments (up to 40 amino acids), thereby overcoming cross-reactivity with microbial sequences, and allowing for the use of undiluted serum (which increases sensitivity). The F component can be further enhanced by presentation of it in multimeric formats and with specific spacing. The four types of multimeric format include linear repeating units, linear repeating units with spacing, clusters, and branching (Fig. 4).
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.
Legal status varies by country, but cardarine is not approved as a medicine in major jurisdictions. It is often sold as a research chemical, a category that may not be lawful for human use. Buyers should check local laws and product labels carefully.