Taking three Migranil tablets daily for four years is highly dangerous and is likely causing "medication overuse headaches." Migranil contains ergotamine, which can cause severe vascular complications if overused. She must consult a doctor or neurologist immediately to safely taper off this medication. For alternative management: 1. Treat the Sinusitis: Consult an ENT specialist. Nasal steroid sprays and saline rinses can reduce sinus pressure. 2. Preventative Therapy: A doctor can prescribe safe daily preventatives like Amitriptyline, Propranolol, or Flunarizine to reduce headache frequency. 3. Acute Relief: Switch to safer rescue medications (like triptans or paracetamol) used strictly under medical supervision to avoid rebound headaches.