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As per this research, the primary treatment method is supplementation with vitamin B12

Vitamin C may help increase glutathione levels by attacking free radicals first, thereby sparing glutathione

I also have mine in my arm, but like you, asked someone on here as wasn't sure which body part it was gonna be aimed for

Rossberger J, Fall M, Gustafsson CK, Peeker R

These include the treatment of chronic pain, fibromyalgia, and migraine headaches

The issue you mention is a very real side effect - however, I address it in a completely different way by substituting the .9% Bacteriostatic Saline diluent solution with a proprietary blend of a wound wash Irrigant solution comprised of NanoMetallic Silver Oxide
