Quick Comparison

CordycepsShilajit
Half-LifeBioactive compounds accumulate with daily use6-10 hours (fulvic acid components)
Typical DosageStandard: 1000-3000 mg daily of Cordyceps militaris fruiting body extract. CS-4 mycelium: 1000-3000 mg daily. Cordycepin content varies by product. Take in the morning — may be mildly stimulating. Effects build over 1-2 weeks.Standard: 250-500 mg purified resin daily. PrimaVie is the most studied branded extract. Take in the morning with warm water or milk. Resin form preferred over powder for purity. Effects build over 2-4 weeks. Always buy from reputable sources — contamination with heavy metals is common in cheap products.
AdministrationOral (capsules, powder, extract). Cordyceps militaris fruiting body preferred over CS-4 mycelium for cordycepin content.Oral (purified resin, capsules). Dissolve resin in warm water. Take in the morning.
Research Papers9 papers10 papers
Categories

Mechanism of Action

Cordyceps

Cordycepin (3'-deoxyadenosine), the primary bioactive compound, increases ATP production by enhancing mitochondrial electron transport chain efficiency — it may act as an alternative substrate or modulator of Complex I and Complex III. Cordycepin activates AMPK (AMP-activated protein kinase) via increased AMP/ATP ratio or direct activation of the alpha subunit, promoting glucose uptake through GLUT4 translocation and fatty acid oxidation via CPT-1 and ACC inhibition. Cordyceps increases erythropoietin (EPO) production, likely through HIF-1alpha stabilization in hypoxic-sensitive tissues, improving oxygen-carrying capacity. Cordycepin has adenosine-like activity, modulating purinergic P1 (A1, A2A, A2B, A3) and P2 receptors. Anti-inflammatory effects occur through inhibition of NF-kB (reducing IKK degradation of IkB and nuclear translocation) and reduction of pro-inflammatory cytokines (IL-1beta, IL-6, TNF-alpha). Adenosine deaminase-resistant cordycepin may also affect RNA polyadenylation.

Shilajit

Fulvic acid is the primary bioactive, acting as an electron shuttle that donates and accepts electrons — enhancing mitochondrial electron transport chain efficiency by facilitating electron transfer at Complex I and II, similar to CoQ10 but through a different (non-enzymatic) mechanism. DBPs (dibenzo-alpha-pyrones) protect CoQ10 from oxidation by scavenging radicals, extending its functional life in the reduced ubiquinol form. The combination increases ATP production in mitochondria. Fulvic acid also chelates minerals (iron, zinc, magnesium) via carboxyl and phenolic groups, forming soluble complexes that transport across cell membranes via divalent metal transporter 1 (DMT1) and other channels, improving bioavailability. It has direct antioxidant effects (scavenging ROS) and anti-inflammatory effects through inhibition of complement C3 activation and NF-kB.

Risks & Safety

Cordyceps

Common

Mild gastrointestinal discomfort, dry mouth.

Serious

May lower blood sugar — caution with diabetes medications. May increase bleeding risk.

Rare

Allergic reaction in mushroom-sensitive individuals.

Shilajit

Common

Mild GI discomfort, metallic taste.

Serious

Heavy metal contamination in unprocessed/cheap products (lead, arsenic, mercury). May increase iron absorption — caution with hemochromatosis. May lower blood pressure.

Rare

Allergic reaction, gout flare (increases uric acid in some people).

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