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Shilajit

What Is Shilajit?

Shilajit is a dark resin that seeps from high-altitude rock. What it is made of, how it is purified, what trials measured, and what remains unproven.

Written byNico Jaroszewski
Published
A dark resin drawn onto a small spoon beside an open glass jar.
AI-assisted preview image. Replace with approved original photography before publication.

Shilajit is a dark, resinous material that seeps from cracks in rock at altitude, mainly across the Himalaya, the Altai and the Caucasus. It is not a mineral and it is not a plant. It is what is left of plant matter after several centuries of slow decomposition under pressure, pushed back out of the rock when the summer sun warms the face.

The name comes from Sanskrit: shila, rock, and jatu, resin. Resin of the rock. In Russian and German sources the same substance is called mumijo, which is worth knowing if you compare labels across markets.

What it is made of

The bulk of raw shilajit is humic substances, of which fulvic acid is the fraction most often discussed. Alongside those sit trace minerals picked up from the surrounding rock. The exact profile varies by site, altitude and season, which is why two honest jars can differ.

What has actually been studied

Two trials are worth naming. Pandit and colleagues (2016) gave 250 mg of purified shilajit twice daily for 90 days to men aged 45 to 55, and reported higher total and free testosterone and DHEAS against placebo. Keller and colleagues (2019) gave 500 mg daily for eight weeks and reported better maintenance of maximal strength after a fatiguing protocol.

Both are small. Neither licenses a claim that shilajit treats anything, and we will not make one. What can be said is narrower: these are the outcomes that were measured, in these populations, over these timeframes.

Purification is not optional

Raw shilajit collected from rock can carry lead, arsenic, mercury and cadmium. Traditional shodhana purification and modern lab testing exist for that reason. This is the part of the subject that matters most, and it has its own article.

Where to go next

Start with fulvic acid if you want the chemistry, dosage if you have a jar in front of you, and ashwagandha and shilajit if you are deciding what to pair it with.

Questions

What is shilajit?

A dark, tar-like substance that seeps from rock faces in high mountain ranges. It is largely decomposed plant matter, rich in fulvic and humic acids and trace minerals.

Is shilajit the same as mumijo?

Yes. Mumijo is the Russian and German name for the same substance. Shilajit is the Sanskrit-derived name used across Ayurveda and most English-language sources.

What does shilajit taste like?

Bitter, smoky and mineral. Most people take it dissolved in warm water or milk rather than straight, and the taste is usually the first thing new users mention.

Who should avoid shilajit?

Anyone with haemochromatosis or another iron-overload condition, since the resin is iron-rich. Also avoid during pregnancy and breastfeeding, and speak to a clinician first if you take prescribed medication.

Sources

  1. Clinical evaluation of purified shilajit on testosterone levels in healthy volunteersAndrologiaStudyAccessed 3 September 2026
  2. The effects of shilajit supplementation on fatigue-induced decreases in muscular strengthJournal of the International Society of Sports NutritionStudyAccessed 3 September 2026

Who wrote this

Nico Jaroszewski

Shilajatu is written and run by one person, from Winterthur in Switzerland. Every article is edited by a human before it is published, and where something is not known yet the page says so.

How we work

Keep reading

The questions everyone asks

What is shilajit, actually?

A dark resin that seeps out of rock at altitude in the Himalaya, made of plant matter pressed and broken down over a very long time. What comes off the rock is not the product. Shodhana, the purification step, is what separates the resin from everything it was sitting in, and that is the step worth asking a seller about.

Why does fulvic acid matter?

Fulvic acid is a carrier molecule. It binds trace minerals and is studied as a way of getting them across a cell membrane, which is why the interesting question about a mineral is not how much is in the jar but how much of it arrives. That is the mechanism the research is built on. It is a line of study, not a settled fact, and nobody should sell it to you as one.

How much do I take, and when would I notice anything?

A rice-grain portion, dissolved in warm water or under the tongue, once a day. A 30g jar lasts two to three months at that dose. Shilajit is not a stimulant and nothing here works like one, so the honest unit of time is a month rather than an afternoon. If you want the caffeine experience this will disappoint you.

Resin or capsules?

Resin is the whole-spectrum mineral load and it tastes like it does. Capsules are 500mg split evenly between a standardised active and purified resin, in a vegan HPMC shell with no rice flour, no magnesium stearate and no bulking agent. Six blends, each built on the same resin. One caution: the Sea Moss and Bladderwrack blend is naturally high in iodine, so if you have Hashimoto’s or any diagnosed thyroid condition, take that one to your doctor rather than to the checkout.

Where does it come from, and how do I know it is clean?

Collected at altitude in Nepal and purified in a GMP-certified facility. Rock carries whatever the rock carried, which in the Himalaya can mean lead, arsenic and mercury, so every batch is tested for heavy metals by a third-party laboratory and a certificate of analysis is held for the batch you receive. A jar that cannot show you what came out the other side is asking you to take that on faith.

Do you ship outside Europe?

The launch markets are the EU, the UK and Switzerland. Australia, New Zealand, Canada and Ireland get shipping rates without a localised site. Rates and delivery times go up once fulfilment confirms them.

Purified, lab tested, sold as it is

Resin of the Himalayas

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