hey situ. yes i use it, 2,000mcg a wk which is 1cc2xswk. plus i use b-complex injects, its only 2.70usd a 100ml vial but fucking burns. the b12 and plex calms yours nerves. and i have parkisons so it will help my nervous system. pm if u need help. wink.b12 is 30$ for 100ml vial both last a yr. so for 40$ u got enough for yr.