A drug can act as a stimulant, a sedative or can kill you depending on the amount taken ?
Alcohol.
alcohol
alcohol according to psychology 1A
Alcohol
Alcohol Marijuana is the most abused illicit drug in the United states army
Alcohol is the most commonly-abused and most dangerous substance in Western society. Other drugs are pretty bad, too. Get over the "alcohol and drugs" thing; alcohol IS a drug.
Sugar
Alcohol is the oldest drug known to man, and also the most widely-used drug. So, I would imagine it is the most widely-abused drug, as well.
indicators show that hydrocodone is the most commonly abused narcotic analgesic
alcohol
Vicoden
Prescription drugs are the most abused by this generation.