Acute migraines lasting over 24 hours should be treated under a doctor's guidance. Avoid taking multiple painkillers on your own, and inform your doctor about any past stomach issues so they can recommend a safe and effective treatment.

A headache lasting 2 weeks is severe and needs a proper checkup. Stop smoking, stay hydrated, get enough sleep, and avoid taking more Grenil Tablet without a doctor's advice. Consult a doctor to find the cause, as persistent headaches may need tests or a different treatment.