According to the Natural Health Products Quality Reference Guide V3.1, published by Health Canada, heavy metal testing is mandatory for all natural health products. Health Canada's limits establish maximum doses for heavy metals, ensuring the safety of natural health products.
Heavy metal levels are systematically tested in the laboratory, both at the raw material and finished product stages. The finished product is only approved for sale if it meets the standards.
For example, for topical products, such as Eczema Formula or Breathe Well Balm, the limits are as follows:
| Element | Limits in parts per million (ppm) |
| Arsenic | 3 ppm |
| Cadmium | 3 ppm |
| Lead | 10 ppm |
| Total Mercury | 1 ppm |
| Antimony | 5 ppm |
The unit of measurement 'parts per million' or ppm corresponds to dosages in mg/kg. For arsenic, for example, this means that there cannot be more than 3 mg of arsenic in 1 kg of finished product.
For products for oral use, such as MCT Oil or Multivitamins, limits are calculated based on daily exposure:
| Element | Daily limit per adult |
| Arsenic | 10 μg/day |
| Cadmium | 6 μg/day |
| Lead | 10 μg/day |
| Total Mercury | 20 μg/day |
| Methyl mercury | 2 μg/day |
In conclusion, all Natural Health Products at Maison Jacynthe have been tested for heavy metals, and a rate below the standards is guaranteed.
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