Shilajit: Benefits, Dosage, and Evidence-Based Guide

Shilajit is a dark, tar-like resin that oozes from rocks in the Himalayas and other mountain ranges. Formed over centuries from the decomposition of plant material, it is rich in fulvic acid, dibenzo-alpha-pyrones, and over 80 trace minerals. Ayurvedic medicine has used it for millennia as a rejuvenator — and modern research is beginning to validate some of these traditional claims.

Quick Answer

Purified shilajit at 250–500 mg daily has shown benefits for testosterone levels in healthy men, mitochondrial energy production, and cognitive function in preliminary human studies. It is generally safe when sourced from reputable suppliers who test for heavy metals. Avoid raw, unpurified forms.

Key Benefits

Testosterone Support

A 2016 randomized, double-blind, placebo-controlled study in Andrologia gave 250 mg of purified shilajit (PrimaVie) to healthy men aged 45–55 for 90 days. Results showed:

• 20% increase in total testosterone vs. placebo
• Significant increases in free testosterone
• Increased DHEA levels with no changes in gonadotropins (LH/FSH), suggesting a mechanism distinct from HPG axis stimulation

Mitochondrial Energy

Shilajit's fulvic acid and dibenzo-alpha-pyrones support mitochondrial function by:

• Acting as electron carriers in the electron transport chain
• Enhancing CoQ10 activity and protecting it from oxidation
• Supporting ATP production, which may explain its traditional use as an energy tonic

Cognitive Function

A 2012 study in the International Journal of Alzheimer's Disease found that shilajit's fulvic acid inhibits tau protein aggregation, a hallmark of Alzheimer's pathology. While this is preclinical, it supports shilajit's traditional reputation as a cognitive enhancer.

Antioxidant and Anti-inflammatory

Fulvic acid is a potent antioxidant that scavenges free radicals and chelates excess iron. Shilajit has demonstrated anti-inflammatory effects in multiple animal models, reducing NF-kB activation and pro-inflammatory cytokines.

Dosing

• Standard dose: 250–500 mg daily of purified shilajit extract
• Form: Resin or capsule — resin is traditional but capsules are more standardized
• Timing: Take in the morning with food; some users report mild energizing effects
• Duration: Studies have used 90-day protocols; cycling 12 weeks on / 4 weeks off is a reasonable approach
• Combination: Pairs well with CoQ10 due to synergistic effects on mitochondrial function

Quality and Safety

This is critical: raw shilajit can contain heavy metals, mycotoxins, and other contaminants. Only use purified, lab-tested products.

• Look for third-party testing for lead, mercury, arsenic, and cadmium
• PrimaVie is the most clinically studied branded form
• Fulvic acid content should be standardized (typically 50–60%)
• Avoid products that don't disclose their sourcing or testing

Side Effects

Generally well-tolerated at recommended doses. Rare reports include:

• Mild digestive discomfort
• Headache in the first few days
• May increase iron absorption — use caution if you have hemochromatosis

FAQ

Q: Does shilajit actually increase testosterone? Yes, at least one well-designed human RCT showed a 20% increase in total testosterone over 90 days at 250 mg daily. The mechanism may involve direct support of steroidogenic enzymes rather than HPG axis stimulation.

Q: Is shilajit safe long-term? Purified shilajit has been used traditionally for very long periods. The 90-day clinical study showed no adverse effects. However, long-term controlled data beyond 90 days is limited. Periodic liver and kidney monitoring is prudent.

Q: Can women take shilajit? Yes. While the testosterone study was in men, shilajit's energy, antioxidant, and mineral benefits are not gender-specific. Women may benefit from its iron-enhancing and mitochondrial support properties.

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