If a heroin user takes his regular dose of heroin in an unfamiliar setting, the effect on the user may be different than if he took it in his regular setting.

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Quizplus · Accepted Answer

This is true because the setting and environment in which drugs are taken can affect the user's mood, expectations, and physical response to the drug. A change in setting can cause a user to feel more anxious or alert, potentially altering the experience of the drug. Additionally, if the user is accustomed to using heroin in a particular setting, the brain may associate that setting with the drug, leading to greater comfort and relaxation when using heroin in that environment.

If a Heroin User Takes His Regular Dose of Heroin