Answer
It can provoke bronchospasm or worsen asthma in susceptible people. It is contraindicated if aspirin or another NSAID previously caused asthma, breathing difficulty, swelling, hives or rhinitis.
Sources for this answer
- Mefenamic Acid 500 mg Tabletsemc · SmPC Current selected SmPC · Version 3
- Mefenamic Acid 50 mg/5 ml Suspensionemc · SmPC Current selected SmPC · Version 3