I can't find the document online now, but I recall the NZ approval was for K12 only - they didn't have M18 at the time. Don't know if that affects supplements though.
I get M18 from phpure.com (dentaven). I just bought 4 packets of 30 for 140 NZ incl postage, so not the cheapest maybe. But it is just M18 (plus xylitol) whereas others seem to all contain lots of other stuff too. Odd product though, as you have to twist open a vege cap and empty it into your gums (or that's how I do it, anyway). Easy enough though. If anyone gets the Aussie product, let us know what it's like.
Also, an update on making health claims on NZ/Aus foods. Here's a National Party announcement suggesting a final decision (approval?) in June, so probably available in a year maybe, failing more complications?
http://www.national.org.nz/Article.aspx?ArticleID=37695
Here's hoping 2012 brings a lot more clarity on the future for Blis. And the world!!