Pharmacy Technician Certification Exam (PTCE)/Topics/Drug Interactions

Drug Interactions practice test: free Pharmacy Technician Certification Exam (PTCE) questions

Drill 21 Drug Interactions questions with instant explanations and official citations.

Practice domain

Topic overview & passing targets

Drug Interactions Domain Overview

The Drug Interactions module is a core testing domain on the Pharmacy Technician Certification Exam (PTCE). QuizCram provides 21 practice questions for this domain with verified handbook rationales.

  • Target Passing Benchmark: 75% (90 items (80 scored + 10 unscored) · 110-minute limit · 1,400 scaled score)
  • Domain Questions: 21 items
  • Source Material: Official Handbooks
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Sample Practice Questions for Drug Interactions

  1. Question 1Ref: PTCE Content Outline — Medications: Drug Interactions

    A patient is taking warfarin (Coumadin) and is started on amiodarone (Cordarone). What is the primary concern?

    Show Answer & Explanation

    Correct Answer
    B. Increased risk of bleeding due to elevated INR

    Correct — Amiodarone is a potent inhibitor of CYP2C9 and CYP3A4, which metabolize warfarin. This interaction can significantly increase warfarin levels and INR, leading to an elevated risk of bleeding. The pharmacist should alert the prescriber, and INR monitoring should be intensified. Hypoglycemia is not directly relevant to this interaction, warfarin efficacy would increase (not decrease), and renal toxicity is not the primary concern here.

Frequently Asked Questions About Drug Interactions

QuizCram covers 21 practice questions in the Drug Interactions domain, mapped directly to the official examination blueprint.

The benchmark score is 75% (90 items (80 scored + 10 unscored) · 110-minute limit · 1,400 scaled score).

Yes. All questions on QuizCram are written against official handbooks and blueprint specifications with legal citations.