Which statement about methamphetamine is true?

Which statement about methamphetamine is true?

• A. It is primarily used by older adults
• B. It releases dopamine for increased energy, euphoria, and increased productivity
• C. It is never injected or smoked
• D. It is not illegal

Answer: (B)

The main concept here is how methamphetamine changes brain chemistry to produce its effects. Methamphetamine is a potent central nervous system stimulant that increases dopamine in the brain by both promoting release from nerve terminals and blocking the transporters that normally reclaim dopamine. This flood of dopamine in reward and motor pathways leads to heightened energy, feelings of euphoria, and a sense of increased productivity or motivation. Its fast, intense onset—thanks to its ability to cross the blood-brain barrier quickly—also contributes to its strong reinforcing effects and high potential for abuse. It's not accurate to say it’s used mainly by older adults, and while routes like injection or smoking are possible, those routes don’t alter the fundamental pharmacology described. Additionally, methamphetamine is illegal in most places. So the statement that methamphetamine releases dopamine to produce increased energy, euphoria, and a sense of increased productivity best captures its core action.

The main concept here is how methamphetamine changes brain chemistry to produce its effects. Methamphetamine is a potent central nervous system stimulant that increases dopamine in the brain by both promoting release from nerve terminals and blocking the transporters that normally reclaim dopamine. This flood of dopamine in reward and motor pathways leads to heightened energy, feelings of euphoria, and a sense of increased productivity or motivation. Its fast, intense onset—thanks to its ability to cross the blood-brain barrier quickly—also contributes to its strong reinforcing effects and high potential for abuse.

It's not accurate to say it’s used mainly by older adults, and while routes like injection or smoking are possible, those routes don’t alter the fundamental pharmacology described. Additionally, methamphetamine is illegal in most places. So the statement that methamphetamine releases dopamine to produce increased energy, euphoria, and a sense of increased productivity best captures its core action.