Which is a side effect of diphenhydramine?

Prepare for the TMCC EMT-B Medications Exam with detailed flashcards and multiple choice questions. Gain confidence with hints and explanations. Ace your test!

Multiple Choice

Which is a side effect of diphenhydramine?

Explanation:
Diphenhydramine is a sedating antihistamine. Its ability to cross into the brain causes central nervous system depression, which manifests as drowsiness and sedation. This CNS effect is the hallmark side effect you’d expect after giving it. Hypertension and hyperkalemia aren’t typical effects of diphenhydramine, and while anticholinergic properties can sometimes cause tachycardia, the most reliable and common adverse effect is drowsiness.

Diphenhydramine is a sedating antihistamine. Its ability to cross into the brain causes central nervous system depression, which manifests as drowsiness and sedation. This CNS effect is the hallmark side effect you’d expect after giving it. Hypertension and hyperkalemia aren’t typical effects of diphenhydramine, and while anticholinergic properties can sometimes cause tachycardia, the most reliable and common adverse effect is drowsiness.

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