Heroin, however, is generally inhaled or injected, although it may also be smoked. Heroin can be mixed with tobacco or marijuana and smoked in a pipe or cigarette. By injecting the drug, rather than smoking or inhaling it, the same effects are achieved with less heroin. Heroin abusers often use other drugs as well. The behavioral impact of habitual heroin use is generally devastating.
Most habitual users are incapable of concentration, learning, or clear thought.
Rarely are they able to hold a job. They are apathetic, indifferent to consequences, and unable to sustain personal relationships. For many, the inability to honestly earn enough to meet their drug needs leads to crime. Yes, they can. Treatment takes various forms, and detoxification may be needed, by some, to manage the effects of withdrawal.