A practical reference on Cardarine: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
Reviewed 2026-02-05. Anything still debated is marked as such rather than presented as settled.
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.
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.
| 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. |
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Hydrolysis and oxidation are the two primary degradation processes that occur in an oil during cooking. Oxidative stability is how resistant an oil is to reacting with oxygen, breaking down and potentially producing harmful compounds while exposed to continuous heat. Oxidative stability is the best predictor of how an oil behaves during cooking. The Rancimat method is one of the most common methods for testing oxidative stability in oils. This determination entails speeding up the oxidation process in the oil (under heat and forced air), which enables its stability to be evaluated by monitoring volatile substances associated with rancidity. It is measured as "induction time" and recorded as total hours before the oil breaks down. Canola oil requires 7.5 hours, for example, whereas extra virgin olive oil (EVOO) and virgin coconut oil will last over a day at 110 °C (230 °F) of continuous heat. The differing stabilities correlate with lower levels of polyunsaturated fatty acids, which are more prone to oxidation. EVOO is high in monounsaturated fatty acids and antioxidants, conferring stability. Some plant cultivars have been bred to produce "high-oleic" oils with more monounsaturated oleic acid and less polyunsaturated linoleic acid for enhanced stability. The oxidative stability does not directly correspond to the smoke point and thus the latter cannot be used as a reference for safe and healthy cooking.
=== Conjugation via thiol group === Another process of creating immunoliposomes is by using a thiol group and creating a thioether bond. The sulfhydryl group is a key player can is found in cysteine bridges on proteins and reagents like Traut's reagents, SATA, and Sulfo-LC-SPDP. The reduction or hydrolysis of these groups generates thiol groups that create antibody conjugation to lipids. There are multiple methods of this process, and one uses the crosslinking agent SATA as shown in Figure 3. The ester end of SATA reacts with amino groups in proteins to form an amide link and a molecule with a protected sulfhydryl group. In order to continue the reaction, this group must be freed which is done by adding hydroxylamine. The following step is to add a chemical that can be an anchor between the lipid and the thiol group. Some examples of molecules that are capable of being this anchor are maleimide, iodoacetyl groups or 2-pyridyldithiol groups. Ultimately, these steps create an antibody-enzyme conjugate that has been formulated using a thiol group.
== T == TI – Thermal ionization TIC - Total ion chromatogram TICC – Total ion current chromatogram, synonymous with TIC TLF – Time-lag focusing TMT – Tandem mass tags TOF-MS – Time-of-flight mass spectrometer
Eco-Pak Industries, a Kent, Washington–based company specializing in biodegradable and recyclable packing material founded by entrepreneur and actor, John Ratzenberger, best known as Cliff Claven of Cheers. Ratzenberger held partial ownership for a period after the sale. Geami, a packaging company in Raleigh, North Carolina, specializing in recyclable, paper-based materials. e3neo, a French-based company specializing in automated packing and packaging machinery and inventory and logistics management software. Creapaper GmbH, a German supplier of grasspaper and grasspaper products, acquired in October, 2021. Recycold Cool Solutions BV, a Dutch-based manufacturer of sustainable cool packs made from plant-based materials, purchased in 2021.
Sources: en.wikipedia.org
The first human corpse to be frozen with the hope of future resurrection was James Bedford's, a few hours after his cancer-caused death in 1967. Bedford's is the only cryonics corpse frozen before 1974 still frozen today.
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=== DPP-4 distribution and function === DPP-4 is attached to the plasma membrane of the endothelium of almost every organ in the body. Tissues which strongly express DPP-4 include the exocrine pancreas, sweat glands, salivary and mammary glands, thymus, lymph nodes, biliary tract, kidney, liver, placenta, uterus, prostate, skin, and the capillary bed of the gut mucosa (where most GLP-1 is inactivated locally). It is also present, in soluble form, in body fluids, such as blood plasma and cerebrospinal fluid. (It also happens that DPP-4 is the CD26 T-cell activating antigen.) DPP-4 selectively cleaves two amino acids from peptides, such as GLP-1 and GIP, which have proline or alanine in the second position (Figure 2). At the active site where DPP-4 has its effect, there is a characteristic arrangement of three amino acids, Asp-His-Ser. Since alanine and proline are crucial for the biological activity of GPL-1 and GIP, they are inactivated by cleaving away these amino acids. Thus, preventing the degradation of the incretin hormones GLP-1 and GIP by inhibition of DPP-4 has potential as a therapeutic strategy in the treatment of type 2 diabetes.
=== Religion === Bukele's religious beliefs were controversial during his 2019 presidential campaign, with rumors that he was a Christian, a Muslim, or an atheist. The controversy began when pictures from 2011 of Bukele praying at a mosque with his father and brothers spread on social media. Bukele dismissed the controversy as an attempt by the political right to exploit Islamophobia in the predominantly Catholic country. Although Bukele does not identify with any religion, he has stated that he believes in God and Jesus. In a 2015 interview, Bukele said: "I am not a person who believes much in the liturgy of religions. However, I believe in God, in Jesus Christ. I believe in his word, I believe in his word revealed in the Holy Bible. And I know that God does not reject anyone because of their origins". Before that year, some Salvadorans believed that he was a Muslim. Bukele has referred to Bible verses, God, and Saint Óscar Romero — the archbishop of San Salvador who was assassinated in 1980 — in some of his speeches, and has called himself an "instrument of God" ("instrumento de Dios"). He met with Pope Francis in April 2015, saying that the pope told him that Rutilio Grande — a Jesuit priest who was assassinated in 1977 — would soon be beatified.
=== Pharmacokinetics === OHPH shows a pronounced depot effect when administered by subcutaneous injection in animals, similarly to the closely related medication hydroxyprogesterone caproate. The oral activity of OHPH in animals does not appear to have been assessed.
Sources: en.wikipedia.org
AST is similar to alanine transaminase (ALT) in that both enzymes are associated with liver parenchymal cells. The difference is that ALT is found predominantly in the liver, with clinically negligible quantities found in the kidneys, heart, and skeletal muscle, while AST is found in the liver, heart (cardiac muscle), skeletal muscle, kidneys, brain, and red blood cells. As a result, ALT is a more specific indicator of liver inflammation than AST, as AST may be elevated also in diseases affecting other organs, such as myocardial infarction, acute pancreatitis, acute hemolytic anemia, severe burns, acute renal disease, musculoskeletal diseases, and trauma. The elevated AST level in hemorrhagic fever caused by crimean-congo hemorrhagic fever virus is associated with high mortality rate. AST was defined as a biochemical marker for the diagnosis of acute myocardial infarction in 1954. However, the use of AST for such a diagnosis is now redundant and has been superseded by the cardiac troponins. Laboratory tests should always be interpreted using the reference range from the laboratory that performed the test. Example reference ranges are shown below:
RNA is transcribed with only four bases (adenine, cytosine, guanine and uracil), but these bases and attached sugars can be modified in numerous ways as the RNAs mature. Pseudouridine (Ψ), in which the linkage between uracil and ribose is changed from a C–N bond to a C–C bond, and ribothymidine (T) are found in various places (the most notable ones being in the TΨC loop of tRNA). Another notable modified base is hypoxanthine, a deaminated adenine base whose nucleoside is called inosine (I). Inosine plays a key role in the wobble hypothesis of the genetic code. There are more than 100 other naturally occurring modified nucleosides. The greatest structural diversity of modifications can be found in tRNA, while pseudouridine and nucleosides with 2'-O-methylribose often present in rRNA are the most common. The specific roles of many of these modifications in RNA are not fully understood. However, it is notable that, in ribosomal RNA, many of the post-transcriptional modifications occur in highly functional regions, such as the peptidyl transferase center and the subunit interface, implying that they are important for normal function.
== History == Three scientists were involved in the discovery of lutetium: French scientist Georges Urbain, Austrian mineralogist Baron Carl Auer von Welsbach, and American chemist Charles James. They found lutetium as an impurity in ytterbia, which was thought by Swiss chemist Jean Charles Galissard de Marignac to consist entirely of ytterbium. Of the three, Urbain was the first to publish, followed by Welsbach; James was about to publish when he learned of Urbain's work, and thereafter gave up his claim and did not publish. Despite staying out of the priority argument, James worked on a much larger scale and possessed the largest supply of lutetium at the time. Urbain and Welsbach proposed different names. Urbain chose neoytterbium for ytterbium and lutecium for the new element. Welsbach chose aldebaranium and cassiopeium (after Aldebaran and Cassiopeia). Both authors accused the other man of publishing results based on their work. The International Commission on Atomic Weights, which was then responsible for the attribution of new element names, settled the dispute in 1909 by granting priority to Urbain and adopting his choice for a name, one derived from the Latin Lutetia (Paris). This decision was based on the fact that the separation of lutetium from Marignac's ytterbium was first described by Urbain. Welsbach had achieved the separation before Urbain, but Urbain had published 44 days earlier.
GLP-1 analogs resulted in weight loss and had more gastrointestinal side-effects, while in general dipeptidyl peptidase-4 (DPP-4) inhibitors were weight-neutral and are associated with increased risk for infection and headache. Both classes appear to present an alternative to other antidiabetic drugs. However, weight gain and/or hypoglycemia have been observed when dipeptidyl peptidase-4 inhibitors were used with sulfonylureas; effects on long-term health and morbidity rates are still unknown. DPP-4 inhibitors increase blood concentration of the incretin GLP-1 by inhibiting its degradation by DPP-4. Examples are:
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.