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Aeromedical factorsQuestion 879 of 934

What is true about oral decongestants for a pilot with a sinus block?

  1. They give full protection against a sinus block at any altitude
  2. They are safe to use before every flight
  3. They work at once and have no side effects
  4. They have side effects that can impair pilot performance
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Correct answer: They have side effects that can impair pilot performance

Decongestant sprays or drops often do not give enough protection. Oral decongestants can impair performance.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 17: Aeromedical Factors — Middle Ear and Sinus Problems, page 427

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Questions last reviewed: 18 October 2026