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

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  1. At least 4 hours
  2. At least 48 hours
  3. No wait if it's over the counter

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References

  1. FAA Guide for Aviation Medical Examiners, MedGuide www.faa.gov/ame_guide/medguide Checked 2026-10-09.
  2. FAA Over-the-Counter Medications Reference Guide www.faa.gov/pilots/medical_certification/media/OTCMedicationsforPilots.pdf Checked 2026-10-09.

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