Plain English Meaning

A common over-the-counter painkiller. It is legal and widely used, but pilots still need to consider whether it (or the condition being treated) might affect their fitness to fly.

Full Definition

A non-steroidal anti-inflammatory drug (NSAID) sold over the counter under names such as Advil and Motrin, used to reduce pain, inflammation, and fever. Although available without a prescription, ibuprofen can cause side effects — including drowsiness, dizziness, gastrointestinal upset, and visual disturbances — that may impair a pilot's ability to fly safely.

Context Anchor

Seen in aeromedical and personal fitness-to-fly discussions, especially when deciding whether a medication or the reason for taking it could affect safe flight.

Derivation

The name is built from parts of its chemical structure: iso-butyl-propionic-phenolic acid. Knowing this isn't operationally useful — what matters is that it belongs to the NSAID family of pain and inflammation relievers.