Shilajit (Shilajatu) in Ayurveda: Traditional View, Research and Safety

Shilajit is the most unusual substance in this section, because it is not a plant. It is a dark, tar-like resin that seeps out of rock in high mountains, and in Ayurveda it is called shilajatu. It has become popular in recent years, sold as a resin, a powder, capsules and gummies, often with large claims attached.

This page describes what shilajit is and how the tradition sees it, and it puts safety first, because the main concern is not the substance as a tradition describes it but what a product may contain. Heavy-metal contamination has been found in testing of some products, and that makes where a product comes from a serious question.

What it is

Shilajit is a blackish-brown, sticky material that oozes from rock layers in mountain ranges such as the Himalayas, the Altai, the Caucasus and the Karakoram. The usual explanation is that it forms over very long periods from decayed plant matter pressed into the rock and mixed with minerals. It is collected in summer, when the sun softens it, and then dissolved in water, filtered and dried into a resin or a powder.

• Sanskrit: shilajatu, shilajit (the name is usually explained as conqueror of mountains or rock-dweller)
• Hindi: shilajit
• English: shilajit, mineral pitch, mumijo in some regions
• Source: not a plant part. It is an exudate from rock, with organic matter and minerals

Its main organic components are humic substances, including fulvic acid, which are the compounds most websites mention. Because shilajit forms in and from rock, its mineral content depends on the rock it came from, and that has a direct bearing on safety.

The traditional view

Classical texts such as the Charaka Samhita and the Sushruta Samhita discuss shilajatu, and later materia medica such as the Bhavaprakasha describe it in detail. Descriptions vary by text and by teacher, so what follows is a common outline and not a single agreed profile.

• Taste (rasa): pungent (katu) and bitter (tikta) in many lists, with a salty note in some
• Qualities (guna): sharp, penetrating and dry
• Energy (virya): accounts differ, and some describe it as neither strongly heating nor cooling
• Effect on the doshas: commonly said to be balancing for kapha and for the fat tissue, with the tradition describing it as capable of suiting each dosha depending on what it is taken with.

A central teaching is that raw material from the mountain is not used as found. The tradition describes a purification (shodhana) before shilajatu is used, and it describes it as part of the group of rejuvenating substances called rasayana. It is also associated in the tradition with the tissues of the body such as meda dhatu and with vigour and ageing. We report these as what the tradition holds, as statements about history and culture and not as medical findings, and nothing here says shilajit treats any condition.

Purification is a skilled process, and it is exactly the step that a bottle on a shelf or a web advertisement may or may not reflect. We will not describe how it is done or how shilajit is taken, because a description on a general website could be mistaken for instructions. The right route for anyone interested in the Ayurvedic use is a registered practitioner, and our method page explains how we approach traditional claims.

In the kitchen

Shilajit has no kitchen role. It is not a food, a spice or a flavouring, and it is not stirred into cooking.

Where you meet it is in the supplement market, as a resin sold in a jar, as capsules and tablets, as powders and as gummies, and sometimes as an ingredient in compound formulations. The label may mention fulvic acid, a percentage or a lab test, and those details are marketing as much as information. For everyday Ayurvedic cooking, the herbs with a real kitchen role on this site are a better starting point, including turmeric and ginger, and the wider guide to spices in the Ayurvedic kitchen.

What research says

We did not find a page on shilajit from NCCIH, MedlinePlus or LiverTox, so we cannot report trial results or a safety rating from those sources, and we do not say shilajit is proven to do anything. Claims you may see online, for energy, hormones, fertility or ageing, come from small studies, laboratory work or marketing, and we could not verify them from a source we checked.

NCCIH’s overview of Ayurvedic medicine says that few well-designed clinical trials and systematic reviews suggest Ayurvedic approaches are effective, and that most trials are small or poorly designed. For shilajit in particular, we would treat any strong claim with doubt.

Safety and interactions

The main safety question is heavy metals, so it comes first.

• Heavy-metal contamination. Shilajit comes from rock and soil, which can hold lead, arsenic, mercury and cadmium, and raw or poorly processed material can carry them into the product. Testing of shilajit has found this concern is real. Published analyses of samples from different regions, and testing by independent and consumer laboratories, have reported a wide range of results, with some products below commonly used limits and others found to contain worrying levels of metals such as lead and arsenic. We quote no figures because the results differ by product and batch, and that is the point: you cannot judge safety from the label or the price.
• The wider Ayurvedic picture. NCCIH says the FDA warns that the presence of metals in some Ayurvedic products makes them potentially harmful. A 2015 survey it cites found that about one in four tested supplements had high lead and almost half had high mercury, and that 40 per cent of users had elevated blood lead. These figures are for Ayurvedic preparations in general, not for shilajit alone.
• What to look for. If someone in your family is considering shilajit despite this, the sensible steps are to ask a doctor first, to look for a recent third-party laboratory report that names the batch and shows lead, arsenic, mercury and cadmium results, and to avoid raw, unpurified material and products from unknown sellers.
• Children. We found no source supporting shilajit for children, and lead is especially harmful to the young. Please do not give it to a child.
• Pregnancy and breastfeeding. Heavy metals are a particular concern in pregnancy. We found no source that confirms shilajit is safe, so please avoid it unless your doctor says otherwise.
• Medicines. NCCIH’s interaction digest treats most herb and drug interactions as theoretical, and highlights warfarin, digoxin and cancer chemotherapy as needing particular care. It does not name shilajit. Please ask your pharmacist before adding any concentrated product, especially if you take medicine for diabetes, blood pressure, thyroid or blood clotting.
• Symptoms. Unusual tiredness, abdominal pain, nausea, headaches, numbness or tingling, or any sign of liver trouble such as dark urine or yellow skin or eyes, are reasons to stop the product and see a doctor, and to tell them what you have taken.
• Liver and kidney concerns. Anyone with a liver or kidney condition should consult their doctor first.

This page is education, not medical advice. Please read our medical disclaimer, see a doctor for any health concern, and consult a registered Ayurvedic practitioner (BAMS in India) before considering any Ayurvedic treatment.

Frequently asked questions

Sources: NCCIH: Ayurvedic Medicine in Depth, NCCIH: Herb-Drug Interactions. No dedicated NCCIH, MedlinePlus or LiverTox page on shilajit was found; statements on testing of shilajit products reflect published analyses and consumer-laboratory reports and are not from those three sources.