Injectable superoxide diase?

Kilroy

Is anybody here injecting superoxide diase?
It's used in Europe for ligament injuries,
which I have, and also as a life-extension
antioxidant. In the US it is sold only for use
on horses and dogs, as a product called
Palosein or Orgotein.

Back in the 1990s it was supposed to be
the new anti-aging wonder drug, but the
FDA wouldn't approve it.
You can still buy pills with it, but AFAIK
they don't work.

Anyway, I've been unable to find anyplace,
domestic or foreign, that supplies it without
a prescription, and since it isn't FDA-approved
no prescription is possible. Anyone else
have better luck?