PowerDrinker 

An individual that has the capability of consuming more than an alcoholic.

When 10 shots is already enough the PowerDrinker has a desire to take it to 40 shots through the night.

PowerDrinker by 13-incher April 19, 2011

PowerDrinker 

a person who drinks a ton of liquor and usually gets out of control

"Too many, uh, 40 year old adolescents, felons, powerdrinkers, and trustees of modern chemistry" Patrick Swayze in Road House

PowerDrinker by RobertoDesmadre November 22, 2016