Narcotics, depressants, and certain antihistamines are known to cause which symptom?

Narcotics, depressants, and certain antihistamines are known to cause which symptom?

• A. Euphoria
• B. Drowsiness
• C. Increased energy
• D. Improved focus

Answer: (B)

These substances act as central nervous system depressants, meaning they slow brain activity and reduce alertness. Narcotics bind to opioid receptors, producing sedation along with analgesia. Depressants in general slow nerve activity, leading to drowsiness and slower responses. Certain antihistamines cross into the brain and block histamine signaling, which also promotes sleepiness. Because of this combined effect, drowsiness is the typical symptom you’d expect from exposure to narcotics, depressants, and these antihistamines. While some narcotics can cause euphoria, that feeling isn’t universal, and increased energy or improved focus would be opposite to the depressant effect.

These substances act as central nervous system depressants, meaning they slow brain activity and reduce alertness. Narcotics bind to opioid receptors, producing sedation along with analgesia. Depressants in general slow nerve activity, leading to drowsiness and slower responses. Certain antihistamines cross into the brain and block histamine signaling, which also promotes sleepiness. Because of this combined effect, drowsiness is the typical symptom you’d expect from exposure to narcotics, depressants, and these antihistamines. While some narcotics can cause euphoria, that feeling isn’t universal, and increased energy or improved focus would be opposite to the depressant effect.