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Background And Regulatory History — 2026 Update

By Editorial Desk · published 2025-07-24 · last reviewed 2025-08-11 · News

The short version of Research chemical fits in a sentence. The long version — which is the one that helps — is below.

Reviewed 2025-08-11. Anything still debated is marked as such rather than presented as settled.

Background and Regulatory History

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.

Mechanism and Safety Research

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.

Cardarine at a glance

PropertyValueNotes
Common nameCardarineCommon internet and media name.
Research codeGW501516Also written GW-1516.
Drug classPPARδ agonistNot a selective androgen receptor modulator.
Development statusDiscontinuedClinical development halted after rodent cancer findings.
Regulatory statusProhibited in sportListed by WADA; not approved as medicine.

Mechanism and Laboratory Detection

Published human data are sparse and mostly come from early-phase trials. Those studies examined short-term changes in lipids, glucose, and exercise capacity, but they were not large enough to establish efficacy or long-term safety. Some animal experiments reported increased running endurance, yet such findings do not prove a performance benefit in people. Anti-doping laboratories detect GW501516 and its metabolites in urine or blood using liquid chromatography-tandem mass spectrometry. Detection windows depend on dose, sample type, and individual metabolism. The method is sensitive enough to identify trace residues in tested samples.

Laboratory handling focuses on identity, purity, and stability. Reference standards are typically stored cold and dry, protected from light, because solutions can degrade over time. Analytical checks may use high-performance liquid chromatography with ultraviolet detection or mass spectrometry. Impurities and related substances can be separated chromatographically and compared with a known standard. Because cardarine is not an approved drug, compendial monographs are absent, and laboratories often rely on in-house methods. Reported purity varies among unregulated products and should not be assumed from a label.

GW501516 binds and activates PPARδ, a nuclear receptor that influences transcription of genes involved in fatty acid oxidation and energy use. Activation shifts some metabolic pathways in preclinical models, which is why the compound has been studied for lipid disorders and exercise-related endpoints. The exact downstream effects in humans are incompletely mapped. PPARδ is expressed in many tissues, including skeletal muscle, liver, and adipose tissue, so broad activation may have varied consequences. Researchers continue to examine how selective or partial activation might alter the balance between benefits and risks.

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Identity and Regulatory Status

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.

Regulation and Analytical Detection

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.

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.

Identity and Pharmacological Mechanism

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.

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.

Background from the literature

=== FCPA bribery lawsuits === From 2005 to 2010, Bio-Rad subsidiaries made bribes to foreign government officials, and made other payments intentionally ignoring the high likelihood of bribery. The bribes were estimated to have made $35.1 million profit for Bio-Rad, primarily from sales in Russia, Vietnam, and Thailand:

According to this position, the electromagnetic properties of the mother's heart and its interaction with her own and the fetal nervous system ensure the balanced development of the embryo's nervous system and guarantee the development of the correct architecture of the nervous system with the necessary cognitive functions corresponding to the ecological context and the qualities that make human beings unique. Based on these results, the article suggested the hypothesis of the origin of neurostimulation during gestation. Although the exact mechanisms of neurostimulation remain unknown, the empirical effectiveness has resulted in the surge of its clinical application. Existing and emerging neuromodulation treatments also include application in medication-resistant epilepsy, chronic head pain conditions, and functional therapy ranging from bladder and bowel or respiratory control to improvement of sensory deficits, such as hearing (cochlear implants and auditory brainstem implants) and vision (retinal implants). Technical improvements include a trend toward minimally invasive (or noninvasive) systems, as well as smaller, more sophisticated devices that may have automated feedback control, and conditional compatibility with magnetic resonance imaging. Neuromodulation therapy has been investigated for other chronic conditions, such as Alzheimer's disease, depression, chronic pain, and as an adjunctive treatment in recovery from stroke.

Senator Bernie Sanders official US Senate website Campaign website Appearances on C-SPAN Biography at the Biographical Directory of the United States Congress Financial information (federal office) at the Federal Election Commission Legislation sponsored at the Library of Congress Profile at Vote Smart

== Reddit activity == In 2019 Cantelmo began posting on Reddit under the account u/ChrisCGC. He spent large amounts of money on Reddit awards (silver, gold, and platinum), often targeting posts and comments in youth-oriented subreddits such as r/teenagers. Through his main account he spent more than $70,000 on awards. Family members estimated the total outlay, including gifts to individuals, at roughly twice that figure or higher. Gifts reportedly included plane tickets, laptops, podcasting equipment, and in at least one case college tuition assistance. The award-giving attracted attention and led users to the subreddit r/Cantelmoism, created on April 16, 2019. Other related subreddits included r/ChrisCGC and r/ChildrenOfChris. Participants sometimes called themselves Cantelmoists and referred to Cantelmo in messianic terms, often with irony. Cantelmo stated that the awards were intended to draw attention to DMT and to keep conversations going. Cantelmo posted a series of claims about DMT.

The Morpholino drug eteplirsen, targeting exon 51 of the dystrophin mRNA, was approved as a human therapeutic by the FDA in 2016 and antisense oligonucleotides for Morpholinos targeting other exons are also subsequently approved. Morpholinos have been used in preclinical studies to inhibit replication of a broad range of viruses, including influenza, West Nile virus, SARS, hepatitis C, dengue fever, Ebola and Calicivirus, all of which are single stranded RNA viruses. They are in advanced development for prevention and treatment of Ebola and Marburg viruses. In March 2013, the Company announced positive results from a non-human primate study of AVI-7288, the drug candidate for treatment of Marburg virus infection. The results showed that intramuscular administration of AVI-7288 resulted in survival rates up to 100 percent in monkeys exposed to this fatal virus. These results are similar to those in previous studies when the drug was given by intravenous injection. In December 2019, golodirsen (Vyondys 53) received US FDA approval for the treatment of cases that can benefit from skipping exon 53 of the dystrophin transcript. The other approved PMO developed by Sarepta is casimersen (AMONDYS45) which is indicated for the treatment of DMD in patients amendable by exon 45 skipping. In addition to development of Morpholinos as therapeutics, AVI has conducted six human trials for colorectal and pancreatic cancers using their cancer vaccine AVICINE. In 2019, Sarepta signed a licensing agreement with Roche for the development, and commercialization outside of USA, for SRP-9001.

Sources: en.wikipedia.org

Further detail

== Personal life == Born in September 1964, Phillips was raised in Golden, Colorado, where he lived with his father Bill (often referred to as BP), mother Suzanne, sister Shelly and brother Shawn. His father, William Phillips Sr., worked for the Coors Brewing Company while taking law classes at night. He reached the level of corporate analyst at Coors, then quit to open his own law practice. BP later worked for Phillips at EAS, along with other family members. Phillips started bodybuilding in 1982, then moved to Southern California to train at Gold's Gym Venice Beach (known as the Mecca of bodybuilding) in 1983, remaining until 1986, a period during which Phillips admits to steroid use, at different times cycling on Deca Durabolin, Andriol, Sustanon, and other drugs that helped him grow from 185 lbs. to 215 lbs. After not succeeding as a bodybuilder, the 21-year-old Phillips moved back to Colorado where he took classes at the University of Colorado at Denver, specifically the study of exercise physiology and sports nutrition. He then began his publishing career. On June 25, 2021, Phillips was admitted to St. Anthony Hospital in Lakewood and attached to a ventilator after a COVID-19 infection, where he spent 47 days intubated recovering from being in a medically induced coma. He lost 70 pounds. When Phillips was admitted to the hospital he already had pneumonia. ″I did not get vaccinated because I made a mistake,″ Phillips said after recuperating in August 2021. ″I thought since I had COVID in January 2020, I was immune to it."

1993/3026) Value Added Tax (General) (Amendment) (No.7) Regulations 1993 (S.I. 1993/3027) Value Added Tax (Cash Accounting) (Amendment) (No. 2) Regulations 1993 (S.I. 1993/3028) Trade Marks and Service Marks (Fees) (Amendment) Rules 1993 (S.I. 1993/3029) Local Government Superannuation (Educational Institutions) Regulations 1993 (S.I. 1993/3030) Transfrontier Shipment of Radioactive Waste Regulations 1993 (S.I. 1993/3031) Gipsy Encampments (Metropolitan District of Salford) Order 1993 (S.I. 1993/3032) A564 Trunk Road Stoke—Derby Route (Doveridge Bypass and Slip Roads) Order 1993 (S.I. 1993/3033) A564 Trunk Road Stoke—Derby Route (Doveridge Bypass) (Detrunking) Order 1993 (S.I. 1993/3034) Local Government Act 1988 (Defined Activities) (Exemption) (Cambridge City Council) Order 1993 (S.I. 1993/3035) Sheep Annual Premium and Suckler Cow Premium Quotas (Amendment) Regulations 1993 (S.I. 1993/3036) Census of Production Order 1993 (S.I. 1993/3037) Licensing of Air Carriers (Second Amendment and Other Provisions) Regulations 1993 (S.I. 1993/3039) Access for Community Air Carriers to Intra-Community Air Routes (Amendment and Other Provisions) Regulations 1993 (S.I. 1993/3040) Air Fares (Second Amendment) Regulations 1993 (S.I. 1993/3041) Airports Slot Allocation (Amendment) Regulations 1993 (S.I. 1993/3042) Local Government Superannuation (Membership) Regulations 1993 (S.I. 1993/3043) Local Government Superannuation (Scotland) Amendment (No.3) Regulations 1993 (S.I. 1993/3044) Land Registration (Leasehold Reform) Rules 1993 (S.I.

A black smoker or deep-sea vent is a type of hydrothermal vent found on the seabed, typically in the bathyal zone (with largest frequency in depths from 2,500 to 3,000 m (8,200 to 9,800 ft)), but also in lesser depths as well as deeper in the abyssal zone. They appear as black, chimney-like structures that emit a cloud of black material. Black smokers typically emit particles with high levels of sulfur-bearing minerals, or sulfides. Black smokers are formed in fields hundreds of meters wide when superheated water from below Earth's crust comes through the ocean floor (water may attain temperatures above 400 °C (752 °F)). This water is rich in dissolved minerals from the crust, most notably sulfides. When it comes in contact with cold ocean water, many minerals precipitate, forming a black, chimney-like structure around each vent. Chimneys thicken due to heat conduction encouraging crystallization. The deposited metal sulfides can become massive sulfide ore deposits in time. Some black smokers along the Azores segment of the Mid-Atlantic Ridge are exceptionally metal-rich; for instance, hydrothermal fluids from the Rainbow Vent Field contain up to 24,000 μM of dissolved iron. Black smokers were first discovered in 1979 on the East Pacific Rise by scientists from Scripps Institution of Oceanography during the RISE Project. They were observed using the deep submergence vehicle ALVIN from the Woods Hole Oceanographic Institution. Now, black smokers are known to exist in the Atlantic and Pacific Oceans, at an average depth of 2,100 m (6,900 ft).

=== Collegiate === North Carolina State University is located in southwest Raleigh where the Wolfpack competes nationally in 24 intercollegiate varsity sports as a member of the Atlantic Coast Conference. The university's football team plays in Carter–Finley Stadium, the second largest football stadium in North Carolina, while the men's basketball team shares the Lenovo Center with the Carolina Hurricanes hockey club. The Wolfpack women's basketball, volleyball, and gymnastics as well as men's wrestling events are held on campus at Reynolds Coliseum. The men's baseball team plays at Doak Field.

Sources: en.wikipedia.org

Frequently asked questions

Is cardarine a selective androgen receptor modulator?

No. Cardarine is a PPARδ agonist, while selective androgen receptor modulators act on androgen receptors. The two classes differ in receptor target and downstream effects.

Why did clinical development stop?

Preclinical rodent studies reported cancers, including liver and bladder tumors, at tested doses. The human relevance of those findings is uncertain, but development was discontinued. No approved human product resulted.

Is cardarine approved for medical use?

No. It remains an investigational compound without approved therapeutic labeling. Sports regulators prohibit its use, and health agencies have warned against consuming it.

What is the main molecular target of cardarine?

It targets PPARδ, a nuclear receptor involved in lipid and energy metabolism. It does not act primarily on androgen receptors. This distinction separates it from SARMs.

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