The short version of Cardarine fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2025-08-12. Anything still debated is marked as such rather than presented as settled.
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.
Quality assessment for cardarine samples usually combines identity, purity, and impurity testing. Nuclear magnetic resonance spectroscopy and mass spectrometry can confirm molecular structure, while high-performance liquid chromatography estimates purity. Certificates of analysis from testing laboratories may list these results, but they do not establish safety or legality. In the absence of approved manufacturing, products sold online may contain the wrong compound, variable amounts, or unlisted contaminants. Independent verification is therefore central to analytical work and to interpreting any reported biological activity.
Laboratory detection of GW501516 commonly uses liquid chromatography coupled with tandem mass spectrometry. The method can identify the parent compound or its metabolites in urine and blood after sample cleanup. Protein precipitation, solid-phase extraction, or enzymatic hydrolysis may precede analysis, depending on the matrix. Reference standards are required for accurate quantification and confirmation. Because the compound is not approved, testing often occurs in anti-doping, forensic, or research settings rather than routine clinical care. Results are reported with limits of detection and quantification.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Prohibited in sport | Listed by WADA as a PPARδ agonist. |
| Typical detection matrix | Urine | Most common sample for anti-doping analysis. |
| Common analytical method | LC-MS/MS | Liquid chromatography-tandem mass spectrometry. |
| Common synonyms | GW501516, GSK-516, endurobol | Names found in research and fitness contexts. |
| Typical detection window | Variable | Depends on dose, route, and individual metabolism. |
Literature on cardarine often separates receptor pharmacology from toxicology. Mechanistic papers describe PPARδ activation and gene expression changes, while safety assessments focus on carcinogenicity and species differences. Questions remain about whether rodent tumors arise through PPARδ-dependent or off-target mechanisms. Another open area is how human metabolism and exposure compare with those in animal studies. Analytical methods such as liquid chromatography–mass spectrometry are used to confirm identity in biological and product samples.
GW501516 acts as an agonist at the peroxisome proliferator-activated receptor delta, a nuclear receptor that regulates gene expression. Activation shifts transcription toward genes involved in fatty acid uptake, oxidation, and energy expenditure. The compound does not bind the androgen receptor and therefore differs from anabolic steroids and SARMs. In rodent models, this metabolic shift has been linked to increased running endurance and reduced fat accumulation. The exact downstream pathways in humans remain incompletely characterized.
Early clinical research explored GW501516 for lipid disorders, obesity, and diabetes. Some short-term human studies reported changes in HDL cholesterol, LDL cholesterol, and triglycerides. The development program was discontinued after rodent studies showed dose-dependent tumor formation in multiple tissues, including liver, bladder, stomach, and skin. These findings raised concerns about long-term cancer risk in humans. Because human exposure data are limited, the clinical significance of the rodent tumors remains uncertain.
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.
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.
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.
Cardarine is a common name for GW501516, a synthetic compound studied for its effects on lipid and glucose metabolism. It functions as an agonist at peroxisome proliferator-activated receptor delta, or PPARδ, a nuclear receptor that influences gene expression. The molecule is not a steroid, nor is it a selective androgen receptor modulator. It is also known in research and sports literature as GW-501516 and endurobol. Early laboratory work examined its metabolic activity in cell cultures and animal models.
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.
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.
==== General paleoanthropology ==== Cerrito, Burkart & van Schaik (2026) review the techniques used to extract information on life history from hominin fossils. Towle (2026) reviews longstanding issues in the systematics of hominins, including non-monophyly of at least the genus Australopithecus and mosaic trait distribution among hominin taxa, and proposes to subsume the genera Paranthropus and Australopithecus within the genus Homo. Begun (2026) reviews the fossil record of African apes and humans, and argues that the lack of hominin fossils from Africa from the interval between 13.5 and 6–7 million years ago might not simply be the result of incompleteness of the fossil record, and is potentially consistent with the origin of hominins in Eurasia and their dispersal into Africa after 7 million years ago. Gardner et al. (2026) study changes of body size throughout the evolutionary history of hominins, and interpret their finding as consistent with marked body mass increase in members of the genus Homo other than Homo habilis and Homo rudolfensis. A study on the morphological diversity of the femur and the humerus in extant hominids is published by Aramendi (2026), who interprets her findings as indicative of variable utility of different long bones for taxonomic indentification of hominin fossils, and as indicating that some of the variability observed in isolated or fragmentary hominin fossils might not be caused by presence of more than one taxon in the studied fossil material.
== Structure == Human M-protein is 165.0 kDa and 1465 amino acids in length. MYOM2 is localized to the human chromosome 8p23.3. M-protein belong to the superfamily of cytoskeletal proteins having immunoglobulin/fibronectin repeats; M-protein contains two immunoglobulin C2-type repeats in the N-terminal region, five fibronectin type III repeats in the central region, and an additional four immunoglobulin C2-type repeats in the C-terminal region. M-protein is expressed only in striated muscle, including fast skeletal muscle and cardiac muscle.
For services to Aviation. Elsie Macpherson. For services to Mentally Ill People. Maureen S. Macmillan, Chairman, City of Edinburgh Children's Panel Advisory Committee. For services to Young People. Stuart Macredie, lately Headteacher, St Albans Junior and Infant School, Wickersley, Rotherham. For services to Education. The Reverend Robert James Magee. For services to Community Relations. Alan Roderick Males. For services to Architecture. Patricia Anne Mansfield. For services to the community in Leicester. Constance May Marcroft. For services to Deaf People in Sheffield. Leslie George Mardell, Administrative Officer, London Fire and Civil Defence Authority. For services to the Fire Service. Samuel Steele Marsden. For services to Agriculture. Derek Marshall, Chief Executive, South Humber Business Advice Centre Ltd. For services to Business. Keith John Martin. For political and public service Rosemary Elizabeth Massey, Office Manager, Lord Chancellor's Department. Stanley Thomas Massey. For services to the community in Havant, Hampshire. Carole Kathleen Masters, Higher Executive Officer, Department of Social Security. William James McAlpine. For services to Scouting. Joan McCallion, Typist, Ministry of Defence. Rachel McClean. For services to Training. Isa McComb. For services to Housing. William Rae McCrindle, Chairman, McCrindle Group. For services to the Engineering Industry. David McCubbin, Compliance Manager, Board of Inland Revenue. Norman Charles John McElroy. For services to the Police. William McGowan, Farmer. For services to the Cattle Industry in Fife.
Spironolactone is not generally used in men for the treatment of androgen-dependent dermatological conditions because of its feminizing side effects, but it is effective for such indications in men similarly. As an example, spironolactone has been reported to reduce symptoms of acne in males. An additional example is the usefulness of spironolactone as an antiandrogen in transgender women and nonbinary individuals. Topical spironolactone is effective in the treatment of acne, as well. As a result, topical pharmaceutical formulations containing 2 or 5% spironolactone cream became available in Italy for the treatment of acne and hirsutism in the early 1990s. The products were discontinued in 2006 when the creams were added to the list of doping substances with a decree of the Ministry of Health that year.
Secretary Wallace explained that these missiles were sent to Ukraine "to mitigate a situation where we (the UK) can't provide combat fighters." The US ambassador to South Africa Reuben Brigety accused the country of supplying weapons to Russia despite its professed neutrality in the war in Ukraine, claiming that the Russian ship Lady R was loaded with ammunition and arms at Naval Base Simon's Town in Cape Town on 6–8 December 2022. The office of President Cyril Ramaphosa expressed disappointment over the claims and said no evidence had been provided to support them. An independent inquiry later confirmed Ramaphos's claims, while the South African Foreign Ministry said Brigety "apologized unreservedly" for his remarks. A Russian court convicted 60-year old Saint Petersburg pensioner Irina Tsybaneva for desecrating the graves of President Vladimir Putin's parents at Serafimovskoe Cemetery. Tsybaneva, who was given a two-year suspended sentence, left a note at the Putin family plot referring to him as a "maniac", a "murderer" and a "monster" after claiming to have been "overwhelmed by fear" after watching news of the invasion of Ukraine. A military court sentenced history teacher Nikita Tushkanov of Komi Republic to five and a half years in prison for justifying "terrorism" and "discrediting" the Russian army after calling the Crimean Bridge explosion a "birthday present" for Putin in a social media post in October 2022.
Sources: en.wikipedia.org
==== Juvenile behavior ==== Juvenile blue tangs exhibit different behavior than both conspecific and congeneric adults. Juveniles are prevalent in the reef crest zone, spur zone, and on the fringe of the reef flat zone, but are rare inside of the reef flat zone. Juveniles remain solitary on their home ranges, and home range territory size increases with body size. These territories overlap with those of Stegastes damselfish. Juvenile blue tangs are aggressive in territory defense. They try to avoid Stegastes, and are rarely chased by these damselfish.
=== Pharmacodynamics === Elagolix acts as a potent and selective competitive antagonist of the gonadotropin-releasing hormone receptor (GnRHR), the biological target of the hypothalamic peptide hormone gonadotropin-releasing hormone (GnRH). As such, it is a GnRH antagonist. The affinity (KD) of elagolix for the GnRHR is 54 pM. By blocking the GnRHR in the pituitary gland, elagolix suppresses the GnRH-induced secretion of the gonadotropins luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the anterior pituitary, and thereby decreases the production of sex hormones by the gonads. In women, elagolix dose-dependently suppresses the production of ovarian hormones including estradiol, progesterone, and testosterone, and thereby decreases the circulating levels of these hormones. In men, GnRH modulators suppress the testicular production of testosterone and estradiol, decreasing the circulating levels of these hormones similarly. Unlike previous GnRH agonists and antagonists, referred to collectively as GnRH analogues, elagolix is a non-peptide and small-molecule compound that can be taken orally. Estrogens like estradiol stimulate the growth of the endometrium, and thereby aggravate symptoms of endometriosis. By suppressing estrogen production and levels, elagolix decreases the growth of the endometrium and decreases endometriosis symptoms such as pelvic pain. Elagolix is a short-acting GnRH antagonist, with a terminal half-life of typically about 4 to 6 hours.
A) Airway - Assess and protect airway and potentially the cervical spine B) Breathing - Maintain adequate ventilation and oxygenation C) Circulation - Assess for and control bleeding to maintain organ perfusion including focused assessment with sonography for trauma (FAST) D) Disability - Perform basic neurological exam including Glasgow Coma Scale (GCS) E) Exposure - Expose entire body and search for any missed injuries, entry points, and exit points while maintaining body temperature Depending on the extent of injury, management can range from urgent surgical intervention to observation. As such, any history from the scene such as gun type, shots fired, shot direction and distance, blood loss on scene, and pre-hospital vitals signs can be very helpful in directing management. Unstable people with signs of bleeding that cannot be controlled during the initial evaluation require immediate surgical exploration in the operating room. Otherwise, management protocols are generally dictated by anatomic entry point and anticipated trajectory.
Founded in 1949 by Sally Everett, the chain began its expansion under Sally's son Donald Everett Sr. in 1966, and started franchising restaurants in 1979. As of November 2020, there are 85 Runza restaurants operating: 80 in Nebraska, two in Iowa, two in Colorado, and one in Kansas. The restaurant chain is still owned by the Everett family, and Sally's grandson Donald Everett Jr. serves as President. In addition to the namesake sandwich, the chain serves chili and cinnamon rolls (another Midwest dish), as well as other fast food staples like hamburgers, french fries and onion rings. The chain attempted to expand beyond the region in 1989. Executives tried to open a restaurant in the Latvian republic of the Soviet Union, going as far as shipping two hundred frozen Runza sandwiches to the Soviet Ministry of Agriculture as a part of its negotiations. The deal fell apart after Latvia was invaded by the Soviet government in an attempt to keep it in the Union. Stores did open in the Las Vegas Strip at the Fashion Show Mall's food court and a mall food court in Moline, Illinois but both failed to gain traction and closed within a few years.
=== Allergic contact dermatitis === Although allergic contact dermatitis is termed an "allergic" reaction (which usually refers to type I hypersensitivity), its pathophysiology involves a reaction that more correctly corresponds to a type IV hypersensitivity reaction. In type IV hypersensitivity, there is activation of certain types of T cells (CD8+) that destroy target cells on contact, as well as activated macrophages that produce hydrolytic enzymes.
Sources: en.wikipedia.org
Yes, WADA prohibits cardarine as a PPARδ agonist. It appears on the prohibited list and can be detected in urine or blood. Athletes using it risk sanctions.
Detection usually uses liquid chromatography-tandem mass spectrometry after sample cleanup. Laboratories look for the parent compound or metabolites. The method requires validated reference standards and controls.
Legality varies by country. In many places it is an unapproved drug and cannot be legally sold for human consumption. Purchasing from online vendors carries legal and quality risks.
LC-MS/MS is common, often after sample cleanup. The assay targets GW501516 or its metabolites.