overdoser

noun

1. One who overdoses.

   “He has a satisfaction in such achievements, of which the undiscriminating overdoser knows nothing.”

   “Being yellow in color, beta-carotene may accumulate under the skin to such an extent that the overdoser actually turns yellow.”

   “...an overdoser, binge drinker, slasher, or sexually impulsive person, is found to act impulsively following some sort of change in a relationship.”