Is it possible to hit an artery in the neck with a methamphetamine injection and still have close to normal cognitive function? I have been an IV user for about 20 yrs, and am almost positive it was an artery shot. It was weak stuff, yet pupils dialated hugely. High was intense, but unusually bad. It has been aprox. 36 hrs. Symptoms at present are soar throat, ringing in ears, extreme headache, intermittent hoarseness. I don t want to cause anyone legal trouble by panicking, but I also don t want more serious consequences if treatment is needed. I just thought if something serious was going to happen, it would have by now. I know some about artery injection, & honestly don t understand how I m still standing. I don t know much about nerve injections, though, and wonder if that may be what occurred. It frightened me enough that I will never IV again. That s saying something tremendous coming from me.