Cardarine (GW-501516) XT Labs USA 

Product Overview

• Manufacturer: XT Labs USA

• Active Substance: Cardarine (GW-501516)

• Pack Size: 60 Tablets × 10 mg

• Form: Oral Tablets

What Is Cardarine (GW-501516)?

Cardarine (GW-501516) is a Peroxisome Proliferator-Activated Receptor Delta (PPARδ) agonist, originally developed in the 1990s by Ligand Pharmaceuticals in collaboration with GlaxoSmithKline (GSK).

It was initially researched for the treatment of metabolic and cardiovascular disorders, such as obesity, diabetes, and dyslipidemia.
However, it later gained significant interest among athletes and fitness enthusiasts for its endurance-boosting and fat-metabolizing properties.

How Cardarine Works

Cardarine operates by activating the PPAR-delta receptor, a protein found in cells that helps regulate energy metabolism.
Once activated, this receptor stimulates genes involved in fatty acid oxidation, which allows the body to use fat as its primary fuel source instead of carbohydrates.

Mechanism of Action

1. Activates PPARδ receptors — boosts energy metabolism in muscle tissue.

2. Enhances fatty acid utilization — improves endurance and reduces body fat.

3. Improves lipid profile — increases HDL (“good” cholesterol) and may reduce LDL (“bad” cholesterol).

4. Promotes stamina and recovery — supports longer, more intense workouts.

The result is a physiological state that supports enhanced aerobic performance, lean physique development, and efficient energy production.

Key Features and Attributes

Benefits of Cardarine (GW-501516)

1. Enhanced Endurance and Stamina

Cardarine significantly improves aerobic capacity, allowing users to perform longer workouts with greater efficiency.
This makes it popular among endurance athletes, runners, and bodybuilders during high-intensity phases.

2. Fat Metabolism and Weight Management

By shifting the body’s energy source from glucose to fatty acids, Cardarine supports faster fat utilization, which can aid in cutting and body recomposition phases.

3. Improved Cholesterol Profile

Studies suggest that Cardarine can increase HDL (good cholesterol) and lower triglycerides, supporting overall cardiovascular wellness.

4. Enhanced Recovery

The compound’s influence on cellular energy pathways may help reduce muscle fatigue and accelerate recovery between workouts.

5. Muscle Retention During Caloric Deficits

Cardarine helps preserve lean muscle tissue during fat loss cycles, minimizing the risk of muscle breakdown often seen during strict dieting.

Role in Fitness and Bodybuilding

While not classified as an anabolic agent, Cardarine is frequently discussed among fitness circles for its non-hormonal performance-enhancing properties.

Typical Applications:

• Cutting Phase: Promotes fat loss without sacrificing muscle tissue.

• Recomposition: Helps achieve a leaner, more defined physique.

• Endurance Training: Ideal for athletes seeking prolonged stamina and faster recovery.

Note: Cardarine is often used as part of a stack with SARMs like Ostarine (MK-2866) or Ligandrol (LGD-4033) for synergistic benefits — always under professional guidance.

Dosage and Administration

Disclaimer: The following details are for informational purposes only. Always consult a healthcare professional before starting any compound or supplement.

Standard Dosage

• Beginners: 10 mg per day

• Intermediate Users: 15–20 mg per day

• Cycle Duration: 4–8 weeks

• Administration: Oral (once daily)

• Timing: Typically taken in the morning or before training sessions

Because Cardarine is non-hormonal, it does not require Post Cycle Therapy (PCT).
However, responsible cycling and adequate rest periods are recommended to prevent potential tolerance buildup.

Potential Side Effects

Cardarine is not free of risks. Though many users tolerate it well, research is ongoing regarding long-term safety.

Possible Side Effects

• Headache or fatigue (mild, temporary)

• Nausea or stomach discomfort

• Potential liver strain with prolonged or high-dose use

• Unknown long-term effects (limited human data)

Early animal studies raised concerns about tumor growth at extreme dosages; however, these findings were linked to doses far exceeding typical human research levels.

To stay safe:

• Avoid high doses or extended cycles.

• Conduct regular bloodwork to monitor liver enzymes and lipid profile.

• Always purchase from verified sources with independent purity testing.

Who Should Avoid Using Cardarine

Cardarine is not suitable for:

• Pregnant or breastfeeding women

• Individuals with liver, heart, or kidney conditions

• Those with a history of cancer or autoimmune disease

• Underage individuals (under 21 years)

• Anyone using prescription medications affecting metabolism or cholesterol

Consult your healthcare provider before combining Cardarine with other compounds or supplements.

Storage Guidelines

• Store at room temperature (15–25°C)

• Keep away from direct sunlight and humidity

• Close tightly after each use

• Keep out of reach of children and pets

Summary

Cardarine (GW-501516) by XT Labs USA is a PPARδ agonist known for supporting fat metabolism, stamina, and endurance.
Originally developed for cardiovascular research, it later became known for its ability to boost energy efficiency, reduce fat, and preserve lean muscle.

While it offers several promising performance-related benefits, Cardarine remains under research, and its long-term safety in humans has not been fully established.
Always seek medical guidance before beginning or combining it with other SARMs or supplements.

Important Reminder

Please note that XT Labs USA is a UGL (Underground Lab) brand. These are not pharmagrade products, but each batch is tested for purity and potency.

If used alongside SARMs or other compounds, ensure to follow proper Post Cycle Therapy (PCT) or off-cycle recovery protocols when applicable.