cocaine addiction will sky rocket whence user has begun IV'ing. You develop a stronger psychological dependence due to the intense "train/bell ringing" hiigh. It is short lived but intense like no other and an early user will find it hard to take time off between hits. this in turn leads to multiple stabs in a short period of time leading to miss hits and blood clotting in the syringe as well as a blunt needle; shaky hands; abscesses, and then the reusing of rigs from missed hits (with blunts) all leading to dissappointment and hours of trying to hit a vein due to the fact that cocaine constricts veins. tolerance will build up quickly, and in many cases the cut can be very harmful to liver and kidneys. You will become isolated, as cocaine is recreationally used as a sociable drug, where once you start IV'ing you lose your image of being a "social user." you will most probably encounter various vein related problems: Abscess, Blown veins, Skin popping, and such (vein harm link below.) it is a long lonely and exspensive road. needle fixation may develop if you do not have it already. Track marks down the whole length of your arm. and the comedown may be horrendous if you do not have good pure coke, but even with pure it is not fun coming off a night of IV'ing. Manageability is key. there are not many positive advantages, especially cause there are hardly any positive effects of using any drug.
"one is too much, and a thousand never enough