Which type of drugs are prohibited for flight personnel unless approved by a Flight Surgeon?

The correct answer is that over-the-counter drugs are prohibited for flight personnel unless approved by a Flight Surgeon. Over-the-counter medications can contain various active ingredients that might impair cognitive functions, motor skills, or overall physical performance, all of which are critical for aviation safety. The potential sedative effects, interactions with other medications, or even unforeseen side effects can significantly impact a flight crew member's ability to perform their duties effectively.

While there are guidelines regarding prescription drugs and controlled substances, which are often more directly regulated and monitored, over-the-counter medications can be more commonly used without full awareness of their potential effects. Therefore, it is crucial for flight personnel to seek approval for these drugs from a Flight Surgeon to ensure they do not compromise flight safety.

Herbal supplements, while less common in regulatory discussions, are often not well-studied, and their effects are not always well understood, making it essential to approach them with caution as well.