Weebcels, I need to find one anime

[demonanus]

The main character consumes something that poisons him but grants him great strength. It's some kind of goo or some parasite or something? Do you know such anime? I saw it like 10 years ago and can't remember now what it was.

 

[Deleted member 265]

The main character consumes something that poisons him but grants him great strength. It's some kind of goo or some parasite or something? Do you know such anime? I saw it like 10 years ago and can't remember now what it was.

parasyte the maxim? one piece?