where to buy ephedrine HCL

[sydney22]

I saw http://www.bodybuilding.com/store/mp/vaso.html was recommended as an ephedrine supplement, but it contains 24 mg and I'd like to start out smaller. Can I break the tablets in half, or would it be safer to buy this http://www.wlcweb.com/yourgymbag/store/comersus_viewItem.asp?idProduct=128 since it only has 8 mg a piece? Does anyone know if this is a reliable brand?

Thanks.