Hi Karen,

This concerns me too. I was taking Genestra Sodium Alginate, but when I emailed them about possible heavy metal contamination, I didn't get any answers. So I stopped taking it.

I know others here highly recommend NSP Algin, but I am also not impressed with them. Firstly, they don't cater for vegetarians (and have no interest in doing so either as I emailed them about it.). Secondly, they say there is mercury level in the Algin, but by Californian standards it is a safe level (even though there is no known safe limits, and that's exactly the argument amalgam supporters make).

The whole debate with the algin is whether the mercury in it is released into the system or is held tight and excreted. I took alginate for a few months and I'm sure I felt a benefit, so I don't think it was releasing any mercury into my systerm, but I stopped taking it because I am really scared of taking anything with mercury in it and hal Huggins doesn't recommend it.

Hope this doesn't offend Algin supporters - just my humble opinion, for what it's worth!