Max,
the original Maxoderm (HFR or whatever it was called) formula was topical arginine. The very very first batch worked great for pumps, but they were short lived. Maybe 1-2 hours. It had some overkill yohimbe content too, enough that it made me jittery. The downside was that carrier burned like crazy. Made me so red that it looked like sunburn.
The following batches were less irritating to the skin. But they were less potent all the way around.
I had a TON of both batches that were given to me in a stash from a guy who worked at a supp warehouse. But I think I gave them all away in trades, just to let others try them :think: