Why lead can be present
Shilajit binds elements from its host rock, and lead is common in many rock types. Levels depend on the deposit, so testing each batch is the only way to know; see heavy metals in shilajit.
Why lead matters
Lead affects the nervous system, blood and kidneys, and it builds up in bones over time. Children are especially vulnerable because lead can affect brain development, and lead can cross the placenta in pregnancy. Public health bodies describe no known safe level of lead exposure, so the aim is to keep exposure as low as reasonably possible. That is why shilajit isn’t recommended for children or in pregnancy; see children and pregnancy.
The UK limit
| Metal | Maximum (mg/kg) |
|---|---|
| Lead | 3.0 |
| Cadmium | 1.0 |
| Mercury | 0.1 |
Source: GB contaminants regulation.[1]
What research has found
A US study of Ayurvedic products bought online found about one in five contained detectable lead, mercury or arsenic.[2] Some traditional preparations deliberately include metal-based ingredients, but contamination can also come from raw materials and processing. For shilajit, the main route is the rock it forms in.
Reading a lead result
A report shows lead at 0.8 mg/kg. That is 0.8 micrograms per gram. At 0.3 g a day, intake from the product is 0.8 × 0.3 = 0.24 micrograms of lead a day. The mg/kg result is well within the 3.0 mg/kg limit.[1] Check the uncertainty, the detection limit and the batch number.
Keeping lead exposure low
- Batch-tested productsWith a lead result in mg/kg.
- Prefer results well below the limitNot just under it.
- Stay within the label servingExposure rises with dose.
- One shilajit product at a timeExposure adds up.
- Avoid unlabelled or untraceable productsEspecially from unofficial online sellers; see marketplace buying.
When to seek advice
Lead poisoning from supplements is uncommon but possible with heavily contaminated products. Symptoms can be vague, such as tiredness, abdominal pain, headaches or irritability. If you are concerned, stop the product, keep the jar and batch number, and speak to a GP, who can arrange a blood test.
How lead is measured
Lead is usually measured by ICP-MS, which can detect it at very low concentrations. A good report gives a numerical result with units and a detection limit well below the 3.0 mg/kg legal maximum.[1] Results should relate to the product as sold, not a dried sample; see heavy-metal testing.
Lead from other sources
Most people take in small amounts of lead from food, water and the environment. Older homes with lead pipes or old paint can add to exposure. A supplement is one more source, which is why minimising it matters even when it is within legal limits.
Questions to ask a brand
- What is the lead result for my batch?In mg/kg as sold.
- What was the detection limit and uncertainty?So you can read the result properly.
- Was the finished product tested?Not just the raw material; see purification and testing.
- Is the laboratory accredited?For metals testing; see accreditation.
Lead and pregnancy
Lead stored in bones over many years can be released during pregnancy and breastfeeding, and lead can pass to the developing baby. That is one reason we recommend avoiding shilajit in pregnancy and while breastfeeding, and why women planning a pregnancy may want to stop beforehand. Discuss supplements with your midwife or GP; see pregnancy and breastfeeding.
Keeping children safe at home
Because children are especially vulnerable to lead, keep shilajit and other supplements well out of their reach. Gummies are a particular risk because they look like sweets. If a child swallows shilajit, keep the packaging and contact NHS 111 for advice; see children and teenagers.
Better testing over time
As testing improves and more brands publish batch reports, buyers can increasingly choose products with lead results well below the legal limit.
Putting it into practice
Before buying, ask for the batch report, find the lead result in mg/kg, confirm it is well below 3.0 mg/kg, and check that the batch number matches your jar. That simple routine takes a few minutes and covers the most important lead question.
The bottom line
Lead is a key safety check for shilajit because it is common in rock and harmful even at low levels. GB law caps it at 3.0 mg/kg in supplements. Choose products whose batch reports show lead well below that limit, never give shilajit to children, and avoid it in pregnancy.
Frequently asked questions
Does shilajit contain lead?
It can, because lead occurs in many rocks. Levels vary by batch.
What is the UK limit for lead in supplements?
3.0 mg/kg as sold.[1]
Is any amount of lead safe?
Public health bodies describe no known safe level of lead exposure, so keeping exposure low is the aim.
Why shouldn’t children take shilajit?
It hasn’t been studied in children, and children are especially vulnerable to lead.
Can lead in shilajit affect pregnancy?
Lead can cross the placenta. Shilajit isn’t recommended in pregnancy.
How can I check lead levels?
Ask for the batch report and look for a lead result in mg/kg.
Does purification remove lead?
Not reliably. Dissolved metals can remain, so check the finished batch.
What are signs of lead poisoning?
Vague symptoms such as tiredness, abdominal pain and headaches. See a GP if you are concerned.
Sources & further reading
Primary research, regulators and standards bodies are cited first. A source being listed here does not mean it supports every claim made by sellers; it supports the specific statement it is attached to.
- European Commission (UK version on legislation.gov.uk). Commission Regulation (EC) No 629/2008 amending Regulation (EC) No 1881/2006 setting maximum levels for certain contaminants in foodstuffs. legislation.gov.uk, 2008. View source (opens in a new tab) [UK legislation (retained)]
- Saper RB, Phillips RS, Sehgal A, et al.. Lead, mercury, and arsenic in US- and Indian-manufactured Ayurvedic medicines sold via the Internet. JAMA 300(8):915–923, 2008. View source (opens in a new tab) [Cross-sectional product survey]