I believe that Dr Sircus now only recommends one product and that is from
http://www.ancientminerals.eu/index1.html It is available in the US but I
don't know where.

If you haven't already you should read his book http://magnesiumforlife.com/ or
at least read the extensive information available on the web site. Just
don't take heed of the product recommendation in the book because it has
since been changed by the good doctor.

Cheers,
Ian in Spain