[@TruthHurts22]I do have a question if the effects of the drug are permanent,  why does he carry vials with him?

cat brought up the idea that maybe he does if he needs to create even more than he can at the moment, and further damages himself in doing so with each time. however there does need to be a limit on how many he can create because he does have to focus on them. so with  being physically weaker with each one, the longer he keeps his creations alive the more strain it puts on his mind (also tying in with the mental instability side effect of the drug.) and if he creates too many he can lose control of them. 

also with his handicap, I do she him relying on his creating to do the fighting for him.