For most healthy adults, purified and tested shilajit causes few side effects beyond occasional mild digestive upset. The real risk isn't the shilajit itself, it's contamination. Raw or untested shilajit can carry heavy metals like lead and arsenic, which is the side effect that actually matters.
Most "shilajit side effects" articles list a few things like upset stomach and call it a day. That misses the point.
The upset stomach isn't the story. What's hiding in a cheap, untested jar is. And because of how shilajit works, a contaminated product can do more damage than your average tainted supplement. Here's the full picture, including the part most brands would rather skip.
Quick Takeaways
- At sensible doses, clean shilajit is well tolerated, and mild digestive upset is the most common complaint
- The dominant real risk is heavy-metal contamination (lead, arsenic, mercury, cadmium, and thallium) in untested products
- Shilajit's fulvic acid carries minerals into your cells efficiently, including toxic metals if they're present
- Several groups should avoid it, especially anyone with an iron-overload condition and pregnant or breastfeeding women
- A Certificate of Analysis (COA) is the single best protection, and no COA is a major red flag
Is shilajit safe?
Clean, purified, third-party-tested shilajit is safe for most healthy adults at recommended doses. There's a real risk worth being upfront about, but it's a specific, avoidable kind: the safety question is really a quality question. Tested shilajit is fine. Untested shilajit is a gamble.
And it's worth not glossing over why.
When ConsumerLab, an independent testing lab, reviewed shilajit supplements in 2024, it found wide swings in quality, with some products exceeding contamination limits for lead.
Then, in 2025, a peer-reviewed study in BMC Chemistry tested six commercial shilajit supplements and detected thallium, a toxic heavy metal, in five of them, in some cases at higher levels than the raw shilajit they started from.
That sounds alarming, and it's better to know it up front than be blindsided by a headline. But look at what those findings actually point to: the problem was never shilajit itself; it was specific products from makers who didn't properly purify or test.
Shilajit forms inside rock, so it can carry whatever was in that rock, lead, arsenic, thallium. Purification and testing exist precisely to catch that before it ever reaches you.
So you don't need to avoid shilajit. You just need to be a slightly picky shopper. Before you buy, look for:
A certificate of analysis (COA) that you can actually see. Not the words "lab tested" on a label, the real document, showing screening for heavy metals like lead, arsenic, and thallium.
Third-party testing, run by an independent lab rather than the brand grading its own homework.
"Purified" on the label. Raw, unprocessed resin is the riskiest form.
A clear dose, so you know exactly what you're taking.
A brand that publishes its results without you having to chase them down.
Get those right, and the studies above simply don't apply to you, because the entire risk lives in the products that skip these steps.
That's exactly the standard our Shilajit Gummies are built to: purified, third-party lab tested, with a measured 300mg serving and none of the guesswork. So yes, shilajit can absolutely be safe.
Whether yours is safe comes down almost entirely to who made it and whether they test it.
What are the side effects of shilajit?
At normal doses, side effects are usually mild: digestive upset, occasional nausea, or a headache. More serious effects are rare with a clean product and tend to involve iron levels or an allergic reaction to fulvic or humic substances.
The everyday side effects to expect, if any:
Mild stomach upset or nausea, especially on a sensitive stomach
Occasional dizziness or headache, often dose-related
A possible allergic reaction in people sensitive to fulvic or humic substances
Because shilajit contains iron and its fulvic acid improves how well your body absorbs minerals, it can also nudge iron levels up.
That's a plus for some people and a real problem for others (see who should avoid it below). If anything feels off, stop and check with your doctor.
Does shilajit contain heavy metals?
It can. Shilajit forms in mineral-rich rock and naturally absorbs metals from its environment, sometimes including lead, arsenic, mercury, cadmium, and thallium. Purification removes them. "Raw" shilajit may not be decontaminated at all.
Shilajit can soak up a wide range of heavy metals over its centuries of formation in rock. And here's the twist that makes it worse than your average supplement: fulvic acid, the thing that makes shilajit useful, is an efficient carrier molecule.
If the product is contaminated, that same fulvic acid shuttles toxic metals straight into your cells.
Two practical takeaways:
"Raw" or "unprocessed" is not a selling point. It often just means not decontaminated. Regulators set strict limits on how much lead and arsenic belong in what you swallow, and raw resin scooped off a mountain has met none of them.
No Certificate of Analysis (COA) is the strongest red flag there is. A COA shows third-party lab results for heavy metals. If a brand won't show you one, walk away.
We dig into where shilajit comes from and why it picks up metals in what is shilajit.
Who should not take shilajit?
Anyone with an iron-overload condition, pregnant or breastfeeding women, people with kidney or liver disease, gout, hormone-sensitive cancers, or under 18 should avoid shilajit or only take it with a doctor's clearance.
Because shilajit raises iron absorption, the iron-related cautions are the firmest. People with hemochromatosis or iron overload shouldn't take it, and the same goes for conditions like sickle cell or thalassemia.
The fuller list of groups who should get medical clearance first:
Pregnant or breastfeeding women
Anyone with hemochromatosis or an iron-overload condition
People with gout or elevated uric acid
Anyone with active kidney or liver disease
People with a known fulvic or humic acid allergy
Children and teens under 18
Anyone with a hormone-sensitive cancer or on androgen therapy (without physician coordination)
If you're on medication or managing a health condition, the two-minute conversation with your doctor is worth it.
How do you take shilajit safely?
Buy only third-party-tested shilajit with a COA, stick to the recommended dose, and take it in the morning. The full dosage and timing breakdown has its own guide.
The safe-use checklist is short: tested product, sensible dose, daily consistency. The exact amounts and timing of how to take shilajit, so we won't repeat them here.
Our Shilajit Gummies are purified and third-party lab tested for heavy metals, and they come with a 100% money-back guarantee.
The bottom line
Shilajit's side effects, for a healthy adult taking a clean product, are usually mild and digestive. The risk worth taking seriously is contamination: raw or untested shilajit can carry heavy metals, and shilajit's own chemistry helps those metals get absorbed.
Protect yourself with one habit.
Only buy third-party-tested shilajit with a published COA, and skip it entirely if you're pregnant, have an iron-overload condition, or are managing kidney or liver issues without a doctor's okay.
Your daily foundation supplement
Shilajit Gummies
A measured 300mg dose of purified, lab-tested shilajit plus lion's mane, without the tar-like taste of raw resin. Caffeine-free, so it pairs with your morning coffee.
Shop Shilajit Gummies Backed by our 100% money-back guarantee.Frequently Asked Questions
Is shilajit bad for your kidneys or liver?
For healthy adults taking clean, tested shilajit at normal doses, current research doesn't show harm. The concern is contaminated product and pre-existing kidney or liver disease, in which case you should avoid it without medical clearance.
Can shilajit cause iron overload?
It can raise iron levels because it improves iron absorption. That's a benefit for some, but a real risk for anyone with hemochromatosis or an iron-overload condition, who should avoid it.
How do I know if my shilajit has heavy metals?
Check for a Certificate of Analysis (COA) showing third-party heavy-metal testing, and make sure it covers thallium, not just the usual four. No COA is the biggest warning sign, and "raw" or "unprocessed" labeling is a concern, not a feature.
Are shilajit gummies safer than resin?
Reputable gummies use purified, tested shilajit and give a measured dose, which removes two of the main risks: contamination and guesswork. Quality still comes down to the brand's testing.
Can you take shilajit every day?
Most healthy adults can, since it's a daily foundation supplement. Use a tested product, stick to the dose, and stop if you notice side effects.
Clean, measured, no guesswork. Try our caffeine-free Shilajit Gummies, backed by a 100% money-back guarantee.
Shilajit GummiesThese statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
