no one carries 45 because it's dangerous to be quite honest....most vendors will tell you any
juice over 36mg/ml of nicotine has dangerous toxicity levels and should be cut down.....to put it in perspective at 45 mg any leaks that pop up and you may lick off your fingers will probably send you into nicotine sickness instantly, 75mg nic base is what most people use to mix with, and a couple of drops can KILL YOU...at higher concentrations the FUMES can kill you.....i mean i'm not against nicotine or
vaping by any means, but we have to be careful of our own safety.