Berserk

Berserk (ベルセルク), officially designated as H3-α4, was a drug developed by Emily Grant.

Description
Berserk was originally created in an attempt to cure by repairing the damaged neurons in the subject's brain. The end result, however, was a drug that induced cellular death and regeneration at an accelerated rate. It healed all external injuries and granted the subject's body a significantly enhanced physique, but at the cost of losing one's entire rational. Once the effects wore off, the subject's body would instantly atrophy and ultimate kill them while turning their body into a shrivelled husk. If someone was injected with a small dose, then the effects would las for a week to ten days; however, in the case that someone was injected until it was just before the limit of the cells' self-destructing from being unable to endure the drastic stimulation, they would die in less than an hour. There was no way to reverse the drug's effects.

Trivia

 * The name "Berserk" is taken from "". In, berserkers were described as warriors who fought in a trance-like fury.