Shilajit: Real Dangers, Side Effects and Contraindications

The real, documented risk of shilajit rarely comes from the substance itself at a traditional dose: it comes from unpurified or counterfeit resins, which can contain heavy metals, mycotoxins or other contaminants resulting from insufficient processing of the raw rock. This factor, far more than the toxicity of purified shilajit itself, should guide a user's caution.

Here is what is actually reported, for an informed course rather than one avoided out of excessive caution or, conversely, taken lightly with an unpurified product.

What are the common side effects of shilajit?

• Mild digestive discomfort: nausea or loose stools are sometimes reported, especially early in a course or at a high dose.
• Headaches: occasionally cited, often transient.
• Excess iron: shilajit is rich in minerals, including iron; extended use at a high dose may be a concern for people already overloaded, particularly with hemochromatosis.

These effects remain generally moderate with a quality purified resin. How it traditionally works and the selection criteria are detailed in our reference article shilajit: real benefits, common scams and how to choose.

The real risk: counterfeits and unpurified resins

Risk	Origin	How to limit it
Heavy metals (lead, arsenic)	Poorly purified raw resin, uncontrolled extraction	Demand an independent certificate of analysis
Mycotoxins and organic contaminants	Inadequate storage and processing conditions	Favor a traceable brand, avoid abnormally low prices
Outright fakes (tar, additives)	High-demand market, scarce resource	Check the texture (dissolves in warm water with no grit), the precise geographic origin

This market reality is the main reason to never buy shilajit at the lowest price found online, without a certificate of analysis or a clear indication of origin.

Pregnancy, breastfeeding and at-risk groups

Shilajit is not recommended during pregnancy and breastfeeding, for lack of sufficient safety data. People with gout (shilajit contains trace amounts of uric acid depending on the deposit) or iron overload should seek medical advice before any course. People on treatment for diabetes or high blood pressure should also mention their use to their doctor, since interactions are theoretically possible.

How do you limit risks if you start a course?

• Demand an independent certificate of analysis, with no exceptions, before any purchase;
• Start at a moderate dose and observe tolerance over one to two weeks;
• Never combine without advice with a treatment for diabetes, blood pressure, or a known iron overload;
• Limit the duration of the course, following the traditional logic of background Ayurvedic courses, rather than unjustified continuous use over several months.

Shilajit or another approach for vitality?

For a vitality and stress-resilience goal with a better-documented safety profile, ashwagandha remains a simpler option to work into your routine. Our comparison shilajit or ashwagandha details the differences. In all cases, our safety guide remains the reference before any course, and a well-chosen supplement removes a good part of the risks linked to product quality.