Addiction depends on so many different things. It is the repetitive, compulsive use of a substance that occurs despite negative consequences to the user. A person can be considered addicted when they've lost control of use when they must continue to pursue whatever pattern of use they have set. For some this might come from injecting heroin, drinking alcohol, snorting cocaine, or drinking enough cough syrup. There isn't one drug that stands alone for its potential to cause addiction. Addiction depends on so many different factors in one's life family history, personality, environment and life experience. Any drug has the potential for addiction.