What is a contraindication in medication use? For example,

• A. A mild side effect
• B. A drug interaction that is not harmful
• C. A prescription that is on hold
• D. A condition or factor that makes using a drug unsafe; e.g., penicillin allergy

Answer: (D)

A contraindication is a condition or factor that makes using a drug unsafe for a patient. For example, if someone has a penicillin allergy, giving penicillin could cause a severe or life-threatening reaction, so it should be avoided.

A mild side effect isn’t a contraindication; it’s an adverse effect that may be tolerated or managed. A drug interaction that isn’t harmful isn’t a contraindication either, though it may require monitoring or dose adjustments if it could become problematic. A prescription that is on hold is an administrative status, not a safety issue with the drug itself.

In practice, always review the patient’s history for allergies, illnesses, and potential interactions to identify true contraindications before giving a medication.