GW-501516 (Cardarine) (10mg/capsule) 60 Capsules

Description

What Is GW-501516 (Cardarine)?

GW-501516, widely known as cardarine, is a synthetic peroxisome proliferator-activated receptor delta (PPARδ) agonist originally developed through a collaboration between GlaxoSmithKline and Ligand Pharmaceuticals in the 1990s. Cardarine is not a SARM despite frequent miscategorization; it is a selective nuclear hormone receptor agonist that activates PPARδ to reprogram cellular metabolism toward fatty acid oxidation and enhanced endurance capacity.

GW-501516 demonstrated remarkable metabolic effects in preclinical models, including increased fatty acid catabolism, improved insulin sensitivity, elevated HDL cholesterol, and dramatic endurance enhancement in exercise studies. The compound’s oral bioavailability, favorable pharmacokinetic profile with a half-life of approximately 16 to 24 hours, and non-hormonal mechanism of action have sustained its popularity in metabolic research. Cardarine acts at the transcriptional level, upregulating genes involved in lipid metabolism, mitochondrial biogenesis, and oxidative muscle fiber recruitment.

Key Features and Specifications

Mechanism of Action: How GW-501516 Works

GW-501516 activates PPARδ, a ligand-activated nuclear receptor that functions as a transcription factor regulating genes involved in fatty acid transport, beta-oxidation, and energy homeostasis. Upon binding to PPARδ, cardarine forms a heterodimer with retinoid X receptor (RXR) and binds to peroxisome proliferator response elements (PPREs) in the promoter regions of target genes, upregulating expression of CPT1, ACADM, PDK4, and UCP3 among others.

This transcriptional reprogramming shifts cellular energy utilization from glucose toward fatty acid oxidation, effectively training cells to preferentially burn fat for fuel. In skeletal muscle, GW-501516 promotes the conversion of fast-twitch glycolytic fibers toward slow-twitch oxidative fibers, a transformation that substantially increases endurance capacity. Preclinical studies in mice demonstrated a 68 percent increase in running endurance and a 75 percent increase in running time to exhaustion.

The metabolic effects of cardarine extend beyond skeletal muscle. In hepatocytes, PPARδ activation reduces lipogenesis and increases fatty acid oxidation, contributing to improved lipid profiles. GW-501516 has been shown to elevate HDL cholesterol by 16 to 79 percent while reducing LDL cholesterol, triglycerides, and fasting insulin levels in both preclinical and early clinical studies.

Reported Research Applications and Benefits

Endurance and exercise physiology research represents the most studied application for GW-501516. The compound’s ability to enhance oxidative capacity without requiring physical training stimulus has attracted substantial interest from researchers investigating metabolic reprogramming, exercise mimetics, and fatigue resistance mechanisms. Studies document increased mitochondrial density, elevated citrate synthase activity, and enhanced oxygen consumption rates in treated muscle tissue.

Lipid metabolism research has demonstrated that cardarine significantly improves blood lipid profiles, making it a valuable tool for studying dyslipidemia, metabolic syndrome, and cardiovascular risk modulation. Fat oxidation studies confirm that GW-501516 increases whole-body fat utilization both at rest and during exercise, with measurable reductions in adipose tissue mass in preclinical models.

Insulin sensitivity research has shown that PPARδ activation by cardarine improves glucose tolerance and reduces insulin resistance in diet-induced obesity models. These metabolic effects occur independently of body weight changes, suggesting direct transcriptional modulation of insulin signaling pathways.

GW-501516 Dosage Information for Research

Because GW-501516 does not interact with the androgen receptor or any hormonal axis, it does not cause testosterone suppression and does not require post-cycle therapy. This non-hormonal mechanism makes cardarine one of the most straightforward compounds to incorporate into both standalone and combination research protocols.

GW-501516 vs Ostarine: Key Differences

Storage and Handling Instructions

Store GW-501516 capsules at controlled room temperature between 20°C and 25°C (68°F to 77°F) in the original sealed container. Protect from direct sunlight, excessive heat, and moisture. Capsules should remain sealed until use. Under proper storage conditions, GW-501516 capsules maintain full potency for at least 24 months from the date of manufacture.

Why Choose PrymaLab GW-501516 Cardarine Capsules

Every batch of PrymaLab GW-501516 undergoes rigorous third-party testing by independent, accredited laboratories using HPLC for purity determination and mass spectrometry for structural identity confirmation. Each shipment includes a batch-specific Certificate of Analysis documenting ≥99% purity, heavy metal screening, residual solvent analysis, and microbial testing results.

PrymaLab delivers precise 10 mg dosing through pharmaceutical-grade encapsulation, ensuring the reproducibility essential for controlled research. GMP-compliant manufacturing, full lot traceability, and free priority shipping on domestic orders provide researchers with a reliable, high-quality supply chain.

Frequently Asked Questions About GW-501516

How long does cardarine take to work in research settings?

Metabolic effects of GW-501516 begin at the transcriptional level within hours of administration, with measurable changes in fatty acid oxidation gene expression detectable within 24 to 48 hours. Functional endurance improvements and lipid profile changes typically become apparent within one to two weeks of daily dosing in preclinical models.

Is GW-501516 a SARM?

No. GW-501516 (cardarine) is a PPARδ agonist, not a selective androgen receptor modulator. It does not bind to androgen receptors and does not influence testosterone, estrogen, or any hormonal axis. The frequent miscategorization of cardarine as a SARM stems from its commercial co-marketing alongside actual SARMs, but its mechanism is entirely distinct.

Does GW-501516 require post-cycle therapy?

No. Because GW-501516 operates through PPARδ activation rather than androgen receptor modulation, it does not suppress testosterone or any endogenous hormone. Post-cycle therapy is not required after cardarine administration regardless of dose or cycle length. This characteristic makes it an ideal stacking candidate with hormonal compounds.

Can GW-501516 be combined with SARMs in research?

GW-501516 is frequently combined with SARMs such as RAD-140 and ostarine in published combination research protocols. Its non-hormonal mechanism complements the anabolic effects of SARMs without compounding hormonal suppression. The ostarine and cardarine stack is one of the most widely studied SARM-PPARδ agonist combinations.

What is the half-life of GW-501516?

The plasma half-life of GW-501516 is approximately 16 to 24 hours based on pharmacokinetic data, supporting once-daily oral dosing in research protocols. Steady-state concentrations are typically achieved within three to five days of consistent daily administration.

Quality Assurance and Testing

PrymaLab enforces strict quality standards for all GW-501516 products. Each batch is tested by independent third-party laboratories using HPLC purity analysis, mass spectrometry identity confirmation, heavy metal screening, residual solvent testing, and microbial assessment. Batch-specific Certificates of Analysis accompany every order, providing full transparency into product quality. Our pharmaceutical research-grade standards ensure that every capsule meets the specifications required for reproducible scientific investigation.

Research Disclaimer

GW-501516 (cardarine) is sold strictly for laboratory research and scientific investigation purposes only. This product is not intended for human consumption, veterinary use, or therapeutic application. GW-501516 has not been approved by the FDA or any regulatory agency for medical use. Purchasers must be qualified researchers affiliated with accredited institutions or licensed research organizations. By purchasing this product, you confirm that it will be used exclusively in accordance with all applicable local, state, and federal regulations governing research materials.