Stack Genius ingredient guide
Shilajit
Shilajit is a sticky, tar-like exudate that seeps from cracks in rocks in the Himalayas and other high mountain ranges, formed over centuries from decomposed plant material and containing fulvic and humic acids along with trace minerals.
Overview
Shilajit is one of the more unusual ingredients in the supplement world. It is not a plant, animal, or mineral in the ordinary sense but a slow-forming resin that exudes from rocks in the Himalayan, Altai, Caucasus, and other high-altitude mountain ranges. Traditional Ayurvedic medicine has used shilajit for centuries in tonic and rejuvenating formulas. Its distinctive tarry consistency and pungent smell come from decomposed plant material combined with mineral compounds over long timescales.
The primary studied constituents are fulvic acid and humic acid, along with a spectrum of trace minerals. In modern supplements shilajit appears in energy blends, endurance formulas, men's health and testosterone-support products, adaptogen stacks, and Ayurvedic multi-ingredient blends. It is sold as resin (traditional form), powder, and capsules.
Because shilajit is a natural exudate from mineral-rich rock, sourcing quality matters enormously. Cheap unpurified material can contain heavy metals, mycotoxins, and free radicals from the raw resin. Reputable products go through a purification process (called shodhana in Ayurvedic tradition) and undergo third-party testing before entering the supplement chain.
Key takeaways
- Shilajit is a naturally formed mineral resin from high-altitude rocks, not a plant extract.
- Fulvic acid content is the main modern quality marker.
- Purification and heavy metal testing are essential because raw material can contain contaminants.
Practical guidance
What to know before adding Shilajit
Evidence snapshot
Small clinical trials have examined purified shilajit in energy, endurance, hormonal, and cognitive contexts, with a stronger evidence base building recently for men's health markers. Traditional Ayurvedic documentation is extensive. NCCIH advises evaluating traditional botanicals with an evidence-first lens, and shilajit is a case where sourcing quality affects outcomes as much as the ingredient itself.
What to look for on the label
Look for a stated fulvic acid percentage (often 15% to 60% for high-quality purified shilajit) and, ideally, humic acid content. Confirm the source region (Himalayan or Altai are most common in premium products) and whether the material has been purified. Third-party heavy metal testing should be publicly available, not just claimed.
What makes a better product
Higher-quality shilajit products publish batch-specific Certificates of Analysis showing fulvic acid content and heavy metal screening, use traditional purification methods (shodhana) with modern quality control, and specify the geographic source. Resin form is the traditional gold standard; powders should not be extended with fillers or maltodextrin. Reputable brands avoid overheated processing that damages fulvic acid content.
Watch-outs
Unpurified or poorly sourced shilajit can contain lead, arsenic, mercury, and other contaminants; this is not a category to buy on price. Shilajit may lower blood pressure and blood sugar and can interact with iron supplementation (it contains iron). It is contraindicated in gout, hemochromatosis, and pregnancy. Discontinue before scheduled surgery.
Dosing & Timing
Traditional resin doses are pea-sized amounts (approximately 300 mg to 500 mg) once or twice daily dissolved in warm water or milk. Standardized capsules commonly deliver 250 mg to 500 mg per serving. Morning or split dosing is typical. Consistent daily use is more relevant than acute timing.
Safety and interaction context
The main safety question is source quality. Hemochromatosis, gout, pregnancy, blood pressure medication, blood sugar medication, iron supplementation, autoimmune conditions, and hormone-sensitive concerns all call for medical review before use. Raw or unpurified shilajit is not appropriate.
Sources
- NCCIH Herbs at a GlanceTraditional botanical evaluation framework
- MedlinePlus Dietary SupplementsConsumer safety reference
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