Shilajit Side Effects: Is It Safe and Who Should Avoid It?

Type „shilajit side effects“ into Google and look at what it suggests next: for male, for female, on kidney, gummies, liver. People are not asking whether shilajit is dangerous in general. They are asking whether it will hurt them. And the answers on offer are either a sales page with a safety paragraph bolted onto the end, or a clinic page that shrugs and says „not enough research“.

Here is the short version, and the rest of this page is the evidence for it. Purified, tested shilajit at label servings has been well tolerated in every human trial we could find, and the longest of them ran 48 weeks. The documented problems come from three places: what was in the product, who was taking it, and how much they took. Two of those three are yours to control.

We make this material and we publish the lab report for every batch, so our stake is in getting this right rather than in reassuring you.

Shilajit side effects at a glance

What are the common, mild side effects of shilajit?

Stomach first. The most common complaint is digestive: loose stools, an upset stomach, sometimes nausea, usually in the first week. The closest thing to a trial of what is in our jars gave 25 men 500 mg of resin a day for 28 days. Seven of them reported something mild: two had acne, one a rash, one itching, one upper stomach pain, one indigestion, one a cough. Every one cleared up on its own, nobody dropped out, and the investigators judged most of them unlikely to be related to the resin (Yadav 2026). That is the complete list.

The other human trials were quieter still. Sixty-three men took 250 or 500 mg of a standardised extract a day for eight weeks and reported no adverse events at all (Keller 2019). Women taking 125 or 250 mg twice a day for 14 weeks reported nothing the researchers could tie to the supplement (Das 2019). An older Indian study gave healthy volunteers 2 grams a day for 45 days, more than six times our serving, and found no change in blood pressure, pulse, weight or blood counts (Sharma 2003).

Now the honest limits of all that. These trials are small and short, and some were funded by the companies that make the extract. Nobody runs post-marketing surveillance on supplements, so nobody is counting side effects in the real world. A Cleveland Clinic physician made exactly that point: all anyone has to go on is a handful of trials, and those suggest it is relatively safe when taken as directed. We agree, with the weight on as directed.

Headache and light-headedness turn up in user reports and in none of the trials. Taste turns up everywhere: it is a mineral resin and it tastes like one. Some people who take it late in the day find it keeps them up, which is a timing problem rather than a safety one. Morning fixes it, and the when to take shilajit guide goes through the options.

One more thing, because Google shows it under this search. A Reddit thread describes headaches, frequent urination, body aches and tiredness after starting shilajit, and explains them as „detox symptoms“. There is no evidence that shilajit detoxes anything, and there is no evidence that feeling worse is a sign of it working. If it makes you feel worse, stop. Symptoms are information, not a phase to push through.

What are the rare, serious side effects, and what actually happened?

Two published case reports carry most of the weight behind the „serious side effects“ headlines. It is worth knowing exactly what they say.

The allergy case. In 2019, doctors in Italy described a 43-year-old dance teacher who developed hives after a meal of rice, tuna and shilajit, then collapsed with breathing difficulty and low blood pressure about an hour after physical activity. The diagnosis was exercise-induced anaphylaxis, possibly on top of an underlying mast cell condition. Skin-prick and patch tests for shilajit were negative, and she declined an oral challenge, so it was never confirmed as the trigger. The authors concluded that Ayurvedic products can act as a cofactor in people already at risk (Losa 2019). That is one case, unconfirmed, in the whole literature. Anaphylaxis to any food or supplement is possible, and the response is the same every time: spreading hives, swelling or trouble breathing means emergency help.

The pregnancy case. In 2018, a Greek team reported a 37-year-old pregnant woman with persistent high blood pressure and low potassium. She had been taking mumijo, the Central Asian name for shilajit, for six months. The picture matched pseudohyperaldosteronism, the „licorice-like“ syndrome, and it resolved with potassium and stopping the supplement. The authors describe it as the first such report (Stavropoulos 2018). One case, in pregnancy, at an unknown dose of an unknown product. It is one of two reasons pregnancy sits in the „no“ list below. The other is that there is no safety data in pregnancy at all.

Blood pressure and heart rate. The US military’s supplement safety programme lists increased blood pressure, dizziness, disorientation and severe allergic reactions among suspected effects, meaning reports exist and causation is unproven (Operation Supplement Safety). Other pages warn of the opposite, a drop in blood pressure, and that claim traces back to animal work. The one human study that measured blood pressure, for 45 days at 2 grams a day, found no change. So it is unproven in both directions, and a real reason to talk to a pharmacist if you take blood pressure medication.

Heavy metals: the side effect that comes from the product, not the substance

Raw shilajit is a rock exudate. It comes off the mountain mixed with stone, soil and plant matter, and it carries metals with it. A 2024 review counted around 65 elements in the material, including lead, arsenic, cadmium and mercury. In most published measurements the levels sat under the WHO and FDA limits for herbal products, but a few studies found batches that exceeded them (Hussain and Saeed 2024). A 2025 study measured thallium, a metal most labs never test for, and found up to 0.5 micrograms per gram in commercial supplements, in some cases more than in the raw material they were supposedly purified from (Kamgar 2025).

Read that last line again. „Purified“ is a word on a label. It is not a guarantee, and a supplement can be dirtier than the rock it came from.

This is why „shilajit side effects“ and „shilajit quality“ are the same question. Nothing in the trials above points to the substance itself harming a healthy adult at a sensible serving. Everything points to what else is in the jar. It is the one risk you control completely, by buying from a report rather than a badge.

How to read a report. Every proper heavy-metal report lists arsenic, cadmium, lead and mercury in milligrams per kilogram, which is the same thing as parts per million. „ND“ means not detected, below the smallest amount the instrument can measure. A number means the metal was found at that level in the sample. To turn it into what you actually swallow, multiply by the serving weight. Our December 2025 resin report shows 0.70 mg/kg of lead, so one 300 mg serving carries 0.21 micrograms. For scale, the FDA’s interim reference level for lead, the benchmark it uses to judge exposure from food, is 2.2 micrograms a day for children and 8.8 for women of childbearing age (FDA). A serving is about a tenth of the stricter figure. The same batch taken at the category’s gram a day would carry 0.70 micrograms, which is why the serving size is part of the safety story.

Our reports are on the lab tests page: seven of them, from laboratories on three continents, every one downloadable as the lab issued it, with a walkthrough of what each line means. What purification involves at our end, and the home tests that only rule out fakes, are in how to check real shilajit. If a brand cannot show you a report, you are trusting a word.

Shilajit side effects for men

Most searches for this come from men, and most of the worry is about hormones. Here is what was measured. In a randomised, placebo-controlled trial, men aged 45 to 55 took 250 mg of purified shilajit twice a day for 90 days. Total testosterone, free testosterone and DHEA-S rose compared with placebo, and the pituitary hormones LH and FSH held steady (Pandit 2016). That is one trial, in one age group, on one extract. It did not measure acne, hair, mood or anything else men worry about, and it does not mean shilajit „boosts testosterone“ in you.

Acne and hair loss. The theory is simple: if androgens shift, skin and hair can follow. The data is thinner than the theory. The only skin finding in a resin trial was acne in two of 25 men, which the investigators judged unlikely to be related. Hair loss appears in no trial we read. If your skin changes, stop for two weeks and see whether it settles.

Iron. Shilajit is a dietary source of iron among other minerals. Men do not lose iron monthly, and a man with haemochromatosis or any iron-overload diagnosis should not take it. That is the one hard stop on the men’s side.

Uric acid and gout. Several brand pages warn about it. We could not find a human trial that measured uric acid, so treat it as unknown. If you have gout, ask before adding anything mineral-rich.

„Is shilajit better than Viagra?“ is one of the questions Google shows under this search. No. It is a food supplement, not a medicine, and this page makes no claim about erections. Anyone who does is selling you something.

Shilajit side effects for women

The line that ranks at the top of Google for this search says shilajit may raise testosterone, and that in women this could mean acne, irregular periods and hair loss. That line comes from the men’s trial above. No women’s trial has reported any of it.

What the women’s trials did report: at 125 or 250 mg twice a day for 14 weeks, no adverse effect the researchers could tie to the supplement, and no change in skin hydration or elasticity (Das 2019). The longest human trial we found anywhere, 48 weeks in 60 postmenopausal women with low bone density, published bone outcomes rather than a side-effect table, so it tells you that women stayed on 250 to 500 mg a day for a year, and no more than that (Pingali 2022).

Pregnancy and breastfeeding. There is no safety data, and there is the one pregnancy case above. So the answer is no, unless your midwife or doctor says otherwise, and you should be wary of any supplement company that gives you a more reassuring answer than that. They can see your full picture and we cannot.

Iron, again. Shilajit is a dietary source of iron. It is not an iron supplement, and it is not a substitute for one if you have been told you need one. The rest of the women’s picture, including serving and timing, is on our shilajit for women page.

Is shilajit bad for your kidneys or liver?

Kidneys. The question is usually „does shilajit damage the kidneys“, and the answer from the human data is that no trial has seen a signal. In the 28-day resin trial, creatinine and blood urea were measured at the start and the end and stayed stable (Yadav 2026). The 45-day study at 2 grams a day found no change in blood chemistry. In rats fed shilajit for 91 days, organs were normal at every dose except the highest, where the liver and intestine showed changes the authors called negligible (Velmurugan 2012). That top dose was 5 grams per kilogram of body weight, which for an adult would be more than a jar a day.

Two honest gaps. Kidney stones: nobody has studied it, in either direction. Chronic kidney disease: a damaged kidney handles mineral load differently, and shilajit is mineral load. That is a genuine reason to ask a nephrologist before starting, not a reason for a healthy person to worry.

„Does shilajit remove toxins?“ appears in the same search. No. There is no human evidence for a detox effect, and we do not make that claim.

Liver. The liver-injury reports you may have read about belong to ashwagandha, not shilajit; the shilajit and ashwagandha guide covers them. In the resin trial, the liver enzymes ALT and AST and bilirubin stayed stable over 28 days. No human trial has reported liver harm. The evidence base is small, so „no signal in a small evidence base“ is the exact size of the claim.

Who should not take shilajit?

• Anyone pregnant or breastfeeding.
• Anyone with haemochromatosis or any iron-overload diagnosis.
• Anyone on blood pressure, blood sugar or thyroid medication, until a pharmacist has looked at the full list. There are no interaction studies, which is exactly why the answer is a pharmacist and not a blog.
• Anyone with kidney or liver disease, until their specialist says otherwise.
• Anyone with gout, with caution, because there is no data.
• Children and teenagers. No data.
• Anyone who has reacted to it before.

That is the same list as on our FAQ page, and it will not get shorter. It is a conversation for them, not for a website.

Can you take too much shilajit?

The searches say a lot: „is 600 mg too much“, „is 1,000 mg too much“, „is 3,000 mg too much“. Here is the range the trials used. Most gave 250 to 500 mg a day of a standardised extract. One gave healthy volunteers 2 grams a day for 45 days. A US hospital system’s guidance quotes up to 2,000 mg a day as generally tolerated (Banner Health), and the military programme’s line is that up to 500 mg of extract appears safe for short-term use.

Our serving is 300 mg of resin once a day, a rice grain to a pea. Much of the category tells you to take a gram. Nobody has shown that a gram does more than 300 mg. What more does is raise the odds of the mild stuff: the loose stools, the headache, the night you cannot sleep. Those are the signs you are past your dose. Drop back.

So is 600 mg too much? It is twice our serving and inside what short trials have used. Is 3,000 mg? It is beyond anything studied, and there is no reason on earth to take it. The how to use shilajit page covers measuring a serving without a scale, and how long shilajit takes to work covers why taking more does not shorten the wait.

Side effects by format: resin, gummies, drops, honey sticks and capsules

The shilajit does not change with the format. The other ingredients and the accuracy of the dose do, and that is where format-specific side effects live.

Gummies. „Are shilajit gummies safe“ is really two questions. Is the other 90 percent of the gummy safe, meaning the sweetener, the gelling agent and the flavour, and is there real shilajit in it? A gummy built on a cheap extract is mostly sugar and gelatine. Ours carry 200 mg of the same sun-dried resin we sell in jars, sweetened with honey rather than refined sugar, gluten-free and gelatine-free, and not vegan because of the honey. One a day. They taste earthy for the same reason the resin does: there is resin in them.

Honey sticks. Mostly honey, which means a sugar load with every stick, and the amount of shilajit in each one is often not stated at all. The side effect is the sugar and the mystery dose.

Drops. What matters is the carrier. Some drops are alcohol-based; ours are 80 percent resin and 20 percent herbal spring water, four drops in water once a day, so the serving is measured for you.

Capsules. Usually the most reliable dose and the easiest on the palate. Read what the milligrams refer to: 1,000 mg of powdered extract and 1,000 mg of resin are different things.

Resin. The most honest format and the easiest to overdo, because the dose is whatever you scoop. That is why the serving is a rice grain to a pea, and why the jar comes with a spoon.

How do you reduce the chance of side effects?

• Buy from a batch report, not a badge. A seal on a label is a design choice.
• Start at the serving, not above it, and stay there for two weeks before you judge anything.
• Take it in the morning, with water or food.
• Add one new supplement at a time, so you know what did what.
• If you feel worse in week one, stop. It is a food, not a course of treatment you have to finish.
• Stop and call a doctor if you get swelling, spreading hives, trouble breathing, chest pain, or a headache that does not lift.
• In the US, you can report a side effect from any supplement to the FDA. Their how to report a problem page explains how, and it helps the next person.