What the evidence actually says

Shilajit is a real substance with an ancient reputation, but the science behind the viral claims is thin and the safety data is thinner. Almost every promise traces back to fulvic acid studied in test tubes, the human trials are small and old, and raw shilajit routinely carries heavy metals.

1Barely studied in people · Cleveland Clinic says the few human trials are small and have methodologic problems
2Test-tube evidence · most claims trace to fulvic acid effects seen in test tubes, not human bodies
3Not FDA reviewed · supplements are unregulated, so what is in the jar is not guaranteed
4Heavy metal risk · raw shilajit often carries arsenic, lead, mercury, cadmium and thallium
5Not for everyone · skip it in pregnancy, on blood thinners, or with heart, liver or kidney issues

Shilajit is having a moment. A dark, tar-like resin scooped from a jar, sold as gummies, capsules and powders, promising more testosterone, more energy, sharper memory and a longer life. The trend is loud. The evidence underneath it is quiet.

Shilajit is genuinely old. It has been used in Ayurvedic medicine for thousands of years, and its Sanskrit name translates to conqueror of mountains. But Cleveland Clinic is clear that the modern research is sparse and the little that exists is not very credible. That gap between the marketing and the science is worth seeing before you spend a cent.

What it is

A Resin That Seeps From Mountain Rock

Shilajit is a black, sticky substance left behind as plants slowly decompose over centuries inside the crevices of high mountain rock, first harvested in the Himalayas. It is rich in fulvic acid and minerals, and it reaches you as liquids, powders, gummies and pills, often blended with other herbs.

Brown shilajit-style powder in a metal scoop on a wooden surface — Shilajit reaches you as resin, powder, capsules and gummies, and its potency and purity vary from batch to batch.

Where the claims start

The Hype Rests on Fulvic Acid in Test Tubes

Nearly every benefit traces back to fulvic acid, an antioxidant compound shilajit is rich in. Fulvic acid shows a number of promising effects in test tubes. But as Cleveland Clinic puts it, test tubes are not human bodies, and there is no telling whether those effects would do anything inside you.

The honest middle

What the Human Studies Actually Show

The human evidence is thin. Small, decade-old studies hinted that shilajit might raise testosterone or sperm count, and other small studies pointed to less fatigue or better muscle recovery. Cleveland Clinic's reviewer is blunt that these trials are small, flawed, and do not justify using shilajit in a clinical setting.

There are only a few studies that assess shilajit's impact on different medical conditions. And almost all of those studies are small and have methodologic problems.

In other words, the long list of benefits is built on a short and shaky stack of evidence.

Robert Saper, MD, Cleveland Clinic

Dark brown powder being poured into a white vessel — There is no reliable way to know a given batch's strength, or what else it may contain.

The part the label skips

Raw Shilajit Routinely Carries Heavy Metals

This is the real risk. A 2024 research review found that raw shilajit often contains arsenic, lead, mercury, cadmium, chromium, thallium and even fungus. Because supplements are not FDA regulated, a 2025 study found some products carried even more thallium than the raw material.

How to use it

If You Try It, Demand a Certificate of Analysis

If you still want to try shilajit, Cleveland Clinic's advice is specific: buy only a brand your provider recommends, one tested by an independent lab and carrying a certificate of analysis. Skip it entirely in pregnancy, on blood thinners, or with heart, liver, kidney or autoimmune conditions.

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📋 Your Coach's Recommendations

Treat Viral Claims as Marketing, Not Evidence

The list of shilajit benefits is long because the marketing is long, not because the science is. Cleveland Clinic states the evidence does not show shilajit prevents, treats or cures any condition. Hold your expectations there.

If You Try It, Only Buy Third-Party Tested

Raw shilajit routinely carries heavy metals, and some products test worse than the raw material. Buy only a brand with an independent lab seal and a certificate of analysis, and treat anything without one as an unknown.

Clear It With Your Provider, and Skip It If

Shilajit can raise testosterone, shift blood pressure and interact with medication. Skip it in pregnancy, on a blood thinner, or with heart, liver, kidney, autoimmune or iron-overload conditions, and check with your provider first.

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Frequently Asked Questions

What is shilajit?

Shilajit is a black, sticky resin that forms over centuries in mountain rock, first harvested in the Himalayas. It is rich in fulvic acid and sold as powders, gummies, capsules and liquids.

Does shilajit actually work?

Cleveland Clinic says the human evidence is sparse and the studies are small and flawed. Shilajit has not been shown to prevent, treat or cure any medical condition.

Does shilajit raise testosterone?

A few small, older studies suggested it might raise testosterone and sperm count, but the samples were tiny and the research is more than a decade old, so the effect is far from settled.

Is shilajit safe?

Trials suggest it is relatively safe when taken as directed, but raw shilajit often carries heavy metals, and supplements are unregulated, so purity cannot be guaranteed without third-party testing.

Who should avoid shilajit?

Cleveland Clinic advises skipping it in pregnancy, and if you have heart, blood pressure, liver, kidney, autoimmune or iron-overload conditions, or take a blood thinner. It is not for children.

Is this medical advice?

No. This article is educational and is not a substitute for your own clinician. Check with your provider before trying shilajit or any supplement, especially if you take medication.

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By the Ageless Coach Editorial Team · Published August 2, 2026 · Last updated August 2, 2026

Shilajit Went Viral. Here's What It Actually Does.

Shilajit is a real substance with an ancient reputation, but the science behind the viral claims is thin and the safety data is thinner. Almost every promise traces back to fulvic acid studied in test tubes, the human trials are small and old, and raw shilajit routinely carries heavy metals.

A Resin That Seeps From Mountain Rock

The Hype Rests on Fulvic Acid in Test Tubes

What the Human Studies Actually Show

Raw Shilajit Routinely Carries Heavy Metals

If You Try It, Demand a Certificate of Analysis

Take the honest shilajit cheat sheet with you

Keep this plan

Where should we send it?

It is on the way

Frequently Asked Questions

Your Coach's Plan

Shilajit Went Viral. Here's What It Actually Does.

Shilajit is a real substance with an ancient reputation, but the science behind the viral claims is thin and the safety data is thinner. Almost every promise traces back to fulvic acid studied in test tubes, the human trials are small and old, and raw shilajit routinely carries heavy metals.

A Resin That Seeps From Mountain Rock

The Hype Rests on Fulvic Acid in Test Tubes

What the Human Studies Actually Show

Raw Shilajit Routinely Carries Heavy Metals

If You Try It, Demand a Certificate of Analysis

Take the honest shilajit cheat sheet with you

How Healthy Is Your Current Lifestyle?

Keep this plan

Where should we send it?

It is on the way

Frequently Asked Questions

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