。
You'd better stay away from drugs of any kind.
Literal
Drugs [topic-は] whatever-kind [even-でも] keep-distance do-in-advance [advice-方がいい].
敬遠する ('to keep at a distance, to steer clear of') is a useful word — originally a baseball term for an intentional walk, now used broadly for avoidance. ~ておいた方がいい combines ておく (do in advance) with ~た方がいい (had better) for a strong recommendation with foresight.