Where to get DMSO in Canada ?

I need to buy Dimethyl Sulfoxide Gel (DMSO), this amazing muscle-pain relief that everyone's talking about, but I cannot find it anywhere for sale in Canada, - and ordering it from the US will likely be confiscated by Custom officials - so I heard.
bodybuiling.com store does not have it either.
:(

Are there feed stores in Canada (for livestock)? I haven't looked in years but that's were we used to get it all the time...