Ayurvedic Products: Heavy Metals and Product Quality

Urgent first

If someone has swallowed an Ayurvedic or other remedy and is very unwell, or a young child or baby has been given a mercury- or lead-containing product, seek emergency care. In the US call 911, or Poison Help at 1-800-222-1222. See poisoning: what to do first and poison help by country. Bring the product and its packaging.

The concern in one paragraph

The US National Center for Complementary and Integrative Health (NCCIH) says some Ayurvedic preparations may contain lead, mercury or arsenic in amounts that can be toxic. [1] This is not a claim about the whole tradition: most Ayurvedic practice involves diet, lifestyle and plant-based remedies. The concern is about specific products, especially herbo-mineral ones, and about contamination and poor manufacturing control.

Evidence labels used here: evidence of harm (documented contamination and poisonings), established (that the metals are toxic), traditional use only (traditional purification claims).

Why metals are in some products

Rasa shastra is the branch of Ayurvedic pharmacy that prepares formulations with minerals and metals, particularly mercury. [2] In the tradition the metals are put through a purification step before use. [3] Whether purification makes a given product safe has to be tested product by product. Modern studies measured metals in finished products and found that purification did not guarantee safe levels, as the studies below show. Separately, a product can be contaminated by raw materials or manufacturing without containing any intentional metal.

What testing found

NCCIH reports a 2015 survey of Ayurvedic users in which 40 percent had elevated blood lead, [13] and that about one in four supplements tested had high lead and almost half high mercury. [14] Percentages come from samples of products that were bought or investigated, so they do not say how common metals are across every product on sale today. We did not find a recent market-wide survey.

Case reports, including children

Published reports describe a 4-year-old boy with severe lead poisoning after prolonged use of an Ayurvedic herbal medicine given for asthma [15] and a 5-month-old girl with mercury toxicity after being given an Ayurvedic remedy for constipation, who needed intensive care. [16] Children are particularly susceptible to lead because they absorb more of it through the gut. [17]

Practical guidance

• Be most cautious with products containing or described as bhasma, rasa, sindura, parad or "mineral" or "metal" preparations, with imported products, and with products bought online or with no ingredient list.
• A "GMP" or "natural" label does not prove a product is free of metals. [10]
• Ask the supplier for a batch test result for lead, mercury and arsenic from an independent laboratory.
• Do not give these products to babies or children, or use them in pregnancy, without a clinician's advice. See medicine interactions, pregnancy and children.
• Tell your doctor you use the product. In the child case above, the signs were anemia, high blood pressure, abdominal pain and mild nervous-system impairment. [18] A blood test can check metal levels. This is a decision for your clinician, not a home test.
• Do not self-treat suspected poisoning, and do not start any "detox" or chelation product on your own.

Regulation

In the US, dietary supplements are not approved by the FDA before sale. [19] A 2024 review states that Ayurvedic medications frequently lack standardized manufacturing processes and quality control. [20] Rules differ by country, and we could not read the FDA, Health Canada or TGA pages on Ayurvedic products this session, so we make no country-specific regulatory claim here.

Related pages

• Product quality and contamination
• Ayurvedic herbal preparations
• Unsafe products and warnings