Quick Comparison
| Ginkgo Biloba | Shilajit | |
|---|---|---|
| Half-Life | 3-10 hours (varies by constituent) | 6-10 hours (fulvic acid components) |
| Typical Dosage | Standard: 120-240 mg daily of standardized extract (24% flavone glycosides, 6% terpene lactones). EGb 761 is the most studied form. Often taken in 2-3 divided doses. | 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. |
| Administration | Oral (capsules, tablets, liquid extract). Standardized extract recommended over raw leaves. | Oral (purified resin, capsules). Dissolve resin in warm water. Take in the morning. |
| Research Papers | 9 papers | 10 papers |
| Categories |
Mechanism of Action
Ginkgo Biloba
Ginkgo biloba extract (EGb 761) contains flavonoids (quercetin, kaempferol, isorhamnetin) and terpenoids (ginkgolides A, B, C, J and bilobalide). The flavonoids are potent antioxidants that scavenge superoxide, hydroxyl radicals, and peroxynitrite, and protect neurons from oxidative damage; they may also chelate iron. The terpenoids (ginkgolides and bilobalide) improve blood flow by antagonizing platelet-activating factor (PAF) at the PAF receptor, which reduces platelet aggregation, blood viscosity, and improves microcirculation in the brain. Bilobalide protects mitochondria and reduces apoptosis. Ginkgo modulates nitric oxide (NO) availability via endothelial nitric oxide synthase (eNOS) for vasodilation. It inhibits monoamine oxidase A and B (MAO-A, MAO-B), mildly elevating dopamine and serotonin. It may enhance cholinergic transmission and reduce amyloid aggregation.
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
Ginkgo Biloba
Common
Headache, dizziness, gastrointestinal discomfort, allergic skin reactions.
Serious
Increased bleeding risk — do not combine with blood thinners (warfarin, aspirin) or take before surgery.
Rare
Seizures (particularly with raw seeds, not standardized extract), severe allergic reactions.
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).
Full Profiles
Ginkgo Biloba →
One of the oldest living tree species on Earth, used in traditional Chinese medicine for millennia. Ginkgo extract (EGb 761) is one of the most prescribed herbal medicines in Europe for cognitive decline and cerebrovascular insufficiency. It improves cerebral blood flow, has antioxidant properties, and modulates neurotransmitter systems. Most effective in older adults with declining cognitive function.
Shilajit →
A mineral-rich resinous substance that oozes from rocks in the Himalayas, formed over centuries from decomposed plant matter. Shilajit contains fulvic acid, dibenzo-alpha-pyrones (DBPs), and over 85 trace minerals. In Ayurveda, it is considered one of the most potent rejuvenation substances. Modern research confirms it enhances mitochondrial CoQ10 function, increases testosterone, and has nootropic effects through electron transport chain support.