jsarsfield, I am in New Zealand, not sure where you are as you haven't got a location in your profile.
But I looked myself and also got my local dealership to see if they could find any alternatives here, but almost no one had heard of it.
Someone could make a killing here if they imported it.
Most the N.Z motorcycle forums mention it, but not an alternative.
I have bought some bog-standard fuel additive that 'supposedly' does similar, but I'm not holding out much faith in it.