Question:medium

Which of the following is not a stimulant?

Updated On: Jan 16, 2026
  • Amphetamines
  • Cocaine
  • Diamorphine
  • Caffeine
Show Solution

The Correct Option is C

Solution and Explanation

To identify the substance that is not a stimulant, the characteristics and effects of each option must be analyzed:

  • Amphetamines: These are potent stimulants impacting the central nervous system, enhancing alertness, focus, and energy.
  • Cocaine: A powerful stimulant that elevates agitation and energy by affecting brain dopamine pathways.
  • Diamorphine: Also known as heroin, this substance is an opioid, not a stimulant. It depresses the central nervous system, inducing relaxation and pain relief.
  • Caffeine: A mild stimulant found in coffee and tea, it boosts alertness and combats fatigue.

Based on this classification, Diamorphine is the substance that is not a stimulant.

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