I have taken L-ar and R lypoic for mild neuropathy for years.seems to help
I know lots of fitness guys take both, but usually it’s in another drink of combined chemicals.
Arginine is often in pre workout drinks. I believe it helps with vasodilation. (getting pumps)
I quit taking pre workout drinks as I’m not sure they’re healthy. This one I used to take made my skin itch, scalp tingle, and heart beat quite high.