A nurse is providing discharge teaching to a client prescribed oral metronidazole. Which statement by the client indicates correct understanding?
1I can drink wine the evening after my final tablet because the interaction ends with the last dose.
2I will avoid alcohol and products containing propylene glycol during therapy and for at least 3 days afterward.✓ Correct answer
3I will stop the medication as soon as symptoms improve and save the remaining tablets for another infection.
4If I miss a dose, I will take two tablets together at the next scheduled time to catch up.
Explanation
Metronidazole labeling instructs clients to avoid alcoholic beverages and products containing propylene glycol during therapy and for at least 3 days after the last dose because abdominal cramps, nausea, vomiting, headache, and flushing can occur. The prescribed course should be completed unless the prescriber changes it. A missed dose should not be doubled without specific instructions.
Clinical reasoning Metronidazole can interact with alcohol or propylene glycol and cause an unpleasant reaction. The avoidance window continues for at least 3 days after therapy ends.
Decision rule Complete the prescribed course and follow the product-specific missed-dose instructions; do not double doses independently.
Metronidazole interaction — Alcohol and propylene glycol should be avoided during metronidazole therapy and for at least 3 days after the final dose.
Antimicrobial adherence — The client should complete the prescribed regimen unless the prescriber changes it and should not double a missed dose without instructions.