Thanks for the comments.
As for the arsenic concentration...
The December 2004 issue of the Journal of the American Medical Association (JAMA) reported a study of commercially available Ayurvedic medicinal products sold in the Boston area, which found that 14 of these products contained potentially harmful levels of lead, mercury and/or arsenic. Although none of these products has been authorized for sale in Canada, to date, three of these products are suspected to be available in various parts of Canada.
One product, SAFI, manufactured by Hamdard (Wakf) Laboratories in New Delhi/Ghaziabad, India was tested by Health Canada and found to contain arsenic levels in excess of 40 times the maximum allowable concentration for drugs.
Source: http://www.hc-sc.gc.ca/ahc-asc/media/ad ... 09-eng.php
Alas, it doesn't give quantities.
According to... http://ibnlive.in.com/news/metal-conten ... 22-17.html
... concentration in the blood of Arsenic should be less than 23 mg/l
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