I was surprised to see it available on Amazon (US). Of course that doesn’t mean the quality is good but it was still surprising to me.@ddjd I made my own with magnesium carbonate and succinic acid I bought off eBay. I wish I could find a source of it premade. The first time I tried it, it put me into this beautiful spiritual mental zone for a couple days. It’s a great supplement I don’t know why it isn’t for sale anywhere.