Herb

Shilajit

Also known as Mumijo, Mineral pitch

Mineral-rich resin exuded from rock in high-altitude ranges including the Himalayas, containing fulvic acid and trace minerals; studied for testosterone support, fatigue, and as a nutrient-absorption enhancer.

2linked conditions

6linked studies

On this pageEvidence Availability Outcomes & conditions →

Evidence

What the research actually shows

We link to relevant studies and leave interpretation to you and your healthcare professional.

Evidence analytics

Where the evidence is concentrated

Number of audited published findings for Shilajit by condition. Drill into a pair page for the full breakdown.

Putative uses

Where people report using it and what trials suggest

Insufficient evidenceTestosterone in infertile men (single small trials)
Insufficient evidenceFatigue/altitude (Indian trials, small)

Where the evidence is negative

Common claims the trials do not support

No trials in healthy men showing testosterone benefit.
Testosterone claims extrapolate from infertile-subset studies.
Product authenticity is a documented problem — many samples contaminated.

Mineral resin sold on testosterone and energy claims; human data are few, small, and region-specific — with a heavy-metals contamination risk in unverified products.

Safety notes: Only use third-party-tested (heavy metals: lead, arsenic, mercury) sources. Avoid in pregnancy, gout (purine content), haochromatosis.

Evidence grades reflect study quality and consistency, not marketing claims.

6studies referenced

6journals

2010–2026publication range

01Safety and Efficacy of TruBlk™ Shilajit Resin Supplementation on Physical Performance and Blood Biomarkers in Healthy Adults: A 28-Day Open-Label Pilot StudyYadav D, et al. · Cureus · 2026PMID 41613504 ↗02A systematic review on sustainable utilization of plastic waste in asphalt: assessing environmental and health impact, performance, and economic viabilityMohammadi R, et al. · Environmental science and pollution research international · 2024PMID 39487917 ↗03The effects of Shilajit supplementation on fatigue-induced decreases in muscular strength and serum hydroxyproline levelsKeller JL, et al. · Journal of the International Society of Sports Nutrition · 2019PMID 30728074 ↗04Reproductive development of yellow perch (Perca flavescens) exposed to oil sands-affected watersHeuvel MR, et al. · Environmental toxicology and chemistry · 2012PMID 22189895 ↗05Fathead minnow (Pimephales promelas) reproduction is impaired in aged oil sands process-affected watersKavanagh RJ, et al. · Aquatic toxicology (Amsterdam, Netherlands) · 2011PMID 20980067 ↗06Clinical evaluation of spermatogenic activity of processed Shilajit in oligospermia

Search PubMed ↗Find clinical trials ↗

What trials found, in numbers

Summaries of published trial results for this compound, grouped by condition. Numbers are reported exactly as the researchers published them — we never calculate or convert.

How to read this table

Benefit: What the trial saw happen: whether the measured outcome moved in the helpful direction in that one study (the tag on each row: “Benefit seen”, “No clear benefit” or “Unclear”). It is a study result — not advice, and not a promise it will work for you.
Evidence: How strong the research behind that result is. A meta-analysis pools many studies (strongest); a systematic review collates them; an RCT tests against a control (placebo); observational studies only watch — they can suggest, not prove.
Effect size: How large the measured change was, exactly as the researchers published it. “No number reported” means the abstract gave no effect size — we never invent one.

In short: benefit is what was observed; evidence is how much you should trust the observation. A “Benefit seen” tag on a weak study counts for far less than the same tag on a meta-analysis.

Fatigue (2 outcomes)

Outcome measured	What trials found	Effect size	People studied	Duration	Type of evidence	Study
fatigue-induced percent decline in MVIC strength (upper 50th percentile group)	High dose Shilajit reduced strength decline to 8.9% vs placebo at 16.0% in 21 men over 8 weeks. (p = 0.022)Benefit seen	8.9 ± 2.3%	21	8 weeks	RCT · 2019	PMID 30728074
serum hydroxyproline levels (upper 50th percentile group)	High dose Shilajit lowered hydroxyproline to 1.5 vs placebo at 2.4 in 21 men over 8 weeks. (p = 0.024)Benefit seen	1.5 ± 0.3 μg·mL- 1	21	8 weeks	RCT · 2019

Outcomes & conditions

Why people look into Shilajit — and what they report

Associated conditions and community-reported outcomes, wrapped together on one page. Aggregates appear only once enough reports arrive.

Outcomes & conditions →

Important: This page reflects observational, aggregate-only community reporting and independent published research. It is not medical advice, and it does not claim any compound treats, cures, or is effective for any condition. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or treatment.

Availability

Where to get Shilajit (UK)

How this compound is sold in the UK, and where our readers typically find it.

Retailer search links — we may earn commission on purchases at no cost to you. Commission never affects our evidence ratings.

Search Shilajit on Amazon UK →Search Shilajit on Holland & Barrett →Search Shilajit on iHerb →

Outcome measured	What trials found	Effect size	People studied	Duration	Type of evidence	Study
Normal sperm count	Shilajit increased normal sperm count by +18.9% compared to baseline; there was no control group. (P < 0.001)Benefit seen	+18.9% change	35	90 days	Study · 2010	PMID 20078516
Semen malondialdehyde	Shilajit reduced semen malondialdehyde by -18.7% compared to baseline.Benefit seen	-18.7% change	35	90 days	Study · 2010	PMID 20078516
Serum testosterone	Shilajit increased serum testosterone by +23.5% compared to baseline. (P < 0.001)Benefit seen	+23.5% change	35	90 days	Study · 2010	PMID 20078516
Sperm motility	Shilajit improved sperm motility by 12.4-17.4% compared to baseline; there was no control group. (P < 0.001)Benefit seen	12.4-17.4% improvement	35	90 days	Study · 2010	PMID 20078516
Total sperm count	Shilajit increased total sperm count by +61.4% compared to baseline in men completing treatment; there was no control group. (P < 0.001)Benefit seen	+61.4% change	35	90 days	Study · 2010	PMID 20078516