Need help for my story?

Ok, first off, one of the characters is addicted to a drug. Since it is set in the future, I made up my own. It is taken in syringe form, and for a set amount of time makes one strong, flexable, numb to physical pain, and without fear. Withdrawal causes hallucinations and extreme fatigue. How people get their high from it is being able to do things like parkour, freerunning, and the general fearlessness that comes with it. This is all well and good, however, I dont have a name for it! Any suggestions would much appreciated. Thank you!