Which of the following drugs is a powerful CNS stimulant?

A) methamphetamine
B) heroin
C) marijuana
D) alcohol
E) All of the answer choices are powerful CNS stimulants.

Methamphetamine is a powerful CNS stimulant, known commonly as meth or crystal meth. The drug increases the levels of dopamine and norepinephrine in the brain, resulting in feelings of euphoria, increased energy, and decreased appetite. It is highly addictive and can lead to a range of negative health consequences, including heart problems, psychosis, and brain damage. Heroin, marijuana, and alcohol are all depressants of the CNS and have the opposite effect on the brain compared to stimulants.