ProtokolPROTOKOL
SARMEmergingPPAR-delta Agonist

Cardarine (GW-501516)

PPAR-δ agonist (GW-501516 — NOT a SARM)

Also known as GW-501516, GW501516, cardarine, endurobol

Half-life

~16-24 hours

What is Cardarine (GW-501516)?

PPAR-delta agonist (not technically a SARM) known for endurance and fat oxidation effects.

How Cardarine (GW-501516) works

Activates PPAR-delta pathways to increase fatty-acid oxidation and mitochondrial efficiency.

Benefits & uses

  • Endurance / stamina boost
  • Fat oxidation (cutting)
  • Non-hormonal (no suppression)
  • No PCT needed

Common uses: Endurance, fat oxidation, exercise capacity, lipid profile support.

Cardarine (GW-501516) dosage

Protokol doesn't recommend doses for prescription or controlled compounds. Any figures below are reference or observational reports — dosing should be set with a qualified clinician.

Commonly reported
Observational: ~10–20 mg/dayObservational use reports — not a recommendation.

Cardarine (GW-501516) half-life

~16-24 hours

Cardarine (GW-501516) side effects

Animal data shows tumor risk at chronic high exposures; human long-term safety unknown.

  • Potential long-term carcinogenicity concern
  • Headache
  • GI discomfort (uncommon)
  • Non-suppressive (an advantage)
  • 🔴 CANCER concern — animal studies showed tumor development at high doses (why the drug was abandoned in development)

Warnings & monitoring

  • 🔴 Development was HALTED due to cancer in animal studies — this is the defining safety concern, not suppression. Educational reference only
  • FDA-warned / WADA-banned / gray-market
  • Not approved for human use

Preparation & storage

Storage
Room temperature.

Cardarine (GW-501516) interactions

  • with Ostarine

    Caution · moderate

    Ostarine is relatively mild; GW501516 is a PPARδ agonist associated with carcinogenicity in animal studies. Human risk unknown but significant enough to warrant caution.

    Timing: GW501516 (Cardarine) has been discontinued in research due to cancer findings in animal studies

  • with Testosterone

    Caution · moderate

    Cardarine (GW501516) is a PPARδ agonist discontinued from human trials due to carcinogenicity in animals. While used in performance circles, human carcinogenic risk remains unestablished.

    Timing: GW501516 has been associated with cancer in animal studies — risk-benefit assessment required

  • with Testosterone

    Caution · moderate

    While Cardarine is popular for endurance and fat loss alongside testosterone cycles, human carcinogenicity data is lacking following concerning animal studies. Risk tolerance is individual.

    Timing: See GW501516 animal carcinogenicity data before use

  • with LGD-4033

    Compatible

    LGD-4033 drives strength and lean mass; Cardarine offsets the cardiovascular impact and supports conditioning.

    Timing: Co-administer daily for lean bulk or recomp

  • with Ostarine

    Compatible

    A popular mild body recomposition stack. Ostarine preserves muscle during a cut while Cardarine boosts fat oxidation and endurance. Minimal androgenic side effects at these doses.

    Timing: Daily; Cardarine 20 mg, Ostarine 10–25 mg

  • with Ostarine

    Compatible

    Cardarine boosts endurance and fat oxidation while Ostarine preserves lean mass on a deficit — a well-studied recomp stack.

    Timing: Both daily during recomp/cut cycles, 8–12 weeks

  • with RAD-140

    Compatible

    Cardarine (GW-501516) is not a SARM but a PPAR-delta agonist — it has no androgenic activity and complements RAD-140's anabolic effects with enhanced endurance and fat oxidation.

    Timing: Take both daily; Cardarine pre-workout, RAD-140 in the morning

  • with SR9009

    Compatible · low

    SR9009 (Stenabolic) is a Rev-Erb agonist improving metabolic rate and endurance via circadian rhythm modulation; Cardarine activates PPARδ for fat oxidation. Complementary endurance/fat loss stack.

    Timing: Both taken multiple times per day due to short half-lives (4–5h); pre-workout ideal

  • with Telmisartan

    Compatible

    Telmisartan's PPAR-gamma activation complements Cardarine's PPAR-delta agonism and helps control AAS-driven BP elevation.

    Timing: Telmisartan 40mg daily during Cardarine + harsh AAS cycles

Commonly stacked with

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For research and educational purposes only. This page is not medical advice and is not a recommendation to use any compound. Many compounds listed are not approved for human use, and some are prescription-only or controlled in your jurisdiction. Dosing figures are reference or observational reports. Talk to a qualified healthcare provider before starting, stopping, or changing anything. Protokol is for tracking purposes only.