Shilajit is a mineral-rich resin associated with mountainous regions and a history of Ayurvedic use. Its composition includes variable mixtures of organic compounds and minerals. The page reviews research on purified preparations, fulvic acids, hormonal markers and energy-related outcomes, emphasizing that composition and contamination distinguish raw material from tested preparations.
What Is Shilajit?
Shilajit is a dark, viscous mineral pitch or resin that exudes from rocks in mountainous regions, especially the Himalayas, Altai Mountains, Caucasus, and other high-altitude ranges. It is thought to form over many centuries or millennia as plant material, microbial metabolites, and soil-derived minerals undergo decomposition, compression, oxidation, and geochemical transformation within rock strata. Traditional names include mumijo, mumio, salajeet, and asphaltum punjabianum. In Ayurvedic medicine, shilajit is classified as a Rasayana, a category of rejuvenating substances traditionally used to promote vitality, resilience, reproductive health, and healthy aging.
The composition of shilajit is variable and depends on geographic origin, geology, plant inputs, extraction, and processing. Important constituents may include fulvic acids, humic acids, dibenzo-alpha-pyrones, dibenzo-alpha-pyrone chromoproteins, phenolic compounds, organic acids, and numerous mineral elements. Raw shilajit can contain unwanted contaminants, including lead, arsenic, mercury, cadmium, microbes, and mycotoxins. Purification is therefore essential. A legitimate purified preparation should use a documented process that removes contaminants while preserving relevant organic fractions, and it should be accompanied by current independent laboratory testing.
Quick Reference
Member reference tables summarize the compound's research parameters.
A controlled human study reported increases in total and free testosterone
In healthy men aged 45–55, purified shilajit at 250 mg twice daily for 90 days was associated with higher total testosterone, free testosterone, and DHEAS versus placebo. This finding applies to a standardized purified preparation and should not be generalized to raw shilajit products.
Fulvic Acids & Bioactive Profile
Supported Research
Composition is complex and product-dependent
Shilajit contains humic substances, including fulvic acids, alongside dibenzo-α-pyrones, minerals, and other organic constituents. Reported antioxidant and cellular effects are largely mechanistic or preclinical; fulvic-acid percentage alone does not establish efficacy or purity.
Energy, Exercise & Cognitive Claims
Preliminary Data
Human evidence for fatigue, performance, and cognition remains limited
Small studies and preclinical work suggest possible effects on fatigue-related measures, mitochondrial pathways, and cognition, but endpoints, extracts, and populations vary. Shilajit should not be considered a proven treatment for fatigue, low mood, memory loss, or athletic performance.
Safety Depends on Purification
Emerging Evidence
Contaminant control is a central safety requirement
Raw or poorly characterized material may contain heavy metals, excess mineral content, microbial contamination, or adulterants. The listed research text specifies choosing a purified product with a lot-specific certificate of analysis showing lead, arsenic, cadmium, and mercury testing.
Research Protocols
As reported in cited literature and research-community logs (see Research Citations below), not a personal dosing recommendation.
This member section describes parameters reported in the research literature.
Included for harm-reduction awareness only, in the event this compound is encountered outside its labeled research use. Inclusion here does not imply RUO Codes endorses, recommends, or instructs human use.
This member section discusses research safety considerations and uncertainties.
COA identifies the batch, date, laboratory, and test methods.
Verified Marker
Heavy-metal panel reported
Lead, arsenic, cadmium, and mercury results are quantified and within applicable limits.
Verified Marker
Identity and fulvic-acid specification
A stated fulvic-acid range and identity testing help characterize the extract; neither alone proves efficacy.
Acceptable Range
Microbial and contaminant screening absent
No results for microbial burden, mycotoxins, pesticides, or other relevant contaminants.
Quality Concern
Unverified raw resin or proprietary source
Avoid products that provide only marketing claims, a generic COA, or no independent third-party verification.
Quality Concern
Research Citations
Pandit S, Biswas S, Jana U, et al. Clinical evaluation of purified Shilajit on testosterone levels in healthy volunteers. Andrologia. 2016;48(5):570–578. DOI: 10.1111/and.12482
Carrasco-Gallardo C, Guzmán L, Maccioni RB. Shilajit: a natural phytocomplex with potential procognitive activity. International Journal of Alzheimer's Disease. 2012;2012:674142. DOI: 10.1155/2012/674142
Stohs SJ. Safety and efficacy of shilajit (mumie, moomiyo). Phytotherapy Research. 2014;28(4):475–479. DOI: 10.1002/ptr.5010
Saper RB, Kales SN, Paquin J, et al. Heavy metal content of ayurvedic herbal medicine products. JAMA. 2004;292(23):2868–2873. DOI: 10.1001/jama.292.23.2868
Research Focus
mitochondrial function, testosterone support, fulvic acid, energy production, anti-aging, CoQ10 synergy, male fertility