A person who uses drugs relatively infrequently, primarily with friends, and in social contexts that define drug use as pleasurable is known as a recreational drug user.

I believe the answer is: Recreational Drug User

Most addict could usually start as Recreational Drug User because the body still hasn't developed enough craving for the substance to be in.
But if taken with precaution, Recreational Drug User is proven to enhance the quality of life for the takers.