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 Tablets — Current selected SmPCemc · Summary of Product Characteristics
- Mefenamic Acid 50 mg/5 ml Suspension — Current selected SmPCemc · Summary of Product Characteristics