Aeromedical factorsQuestion 742 of 934

After the first dose of a new medication, how long should a pilot wait before flying?

  1. At least 6 hours
  2. At least 12 hours
  3. At least 48 hours
  4. At least 1 week
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Correct answer: At least 48 hours

The wait shows whether the medication causes side effects that make flying unsafe.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 17: Aeromedical Factors — Drugs, page 440

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Questions last reviewed: 18 October 2026