Ace the Chemical Dependency Counselor Exam 2025 – Empower Change and Rock Your Career!

Question: 1 / 400

Which of the following substances can act as a depressant?

Caffeine

Nicotine

Alcohol

Alcohol is classified as a central nervous system depressant. This means that it slows down brain activity, leading to effects such as relaxation, lowered inhibition, and sedation. The action of alcohol on the neurotransmitter gamma-aminobutyric acid (GABA) enhances its inhibitory effects on neural activity, contributing to its depressant qualities.

In contrast, caffeine is a well-known stimulant that increases alertness and energy levels, while nicotine, also a stimulant, acts on the central nervous system to enhance mood and increase arousal. MDMA, commonly known as ecstasy, has stimulant properties and also causes feelings of increased empathy and emotional closeness, which are not consistent with depressant effects. Thus, among the choices provided, alcohol is the substance that clearly functions as a depressant.

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MDMA

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