i have heard of it, it depends on what gage needle you use

i was thinking about using a 22G x 1½ needle

bump- i'm thinking of kick starting my next cycle with this- anyone have any experience??

I dont know but id amagine a 22 should be large enough to resolve any problems, I think guys have the problems with 25 guauge pins. I do know nutra vet suspension goes through slin pins. .. shits so smooth

Any suspension should be able to go through a 22g needle, but for smaller ones there are some tricks to injecting suspension that you can try. Using a 22g needle for ED injections is going to get tedious to say the least.