F Nervous and Migraine Headache Combination remedy If you think you have a migraine or nervous headache, consult a registered practitioner. If you are already receiving medical treatment, tell your doctor you are also taking this product. Active constituents (in homoeopathic potencies): Equal proportions Kali Phos (Potassium Phosphate BPC 1949) 6X, Mag Phos (Magnesium Phosphate BPC 1949) 6X, Nat Mur (Sodium Chloride PH Eur) 6X, Silica (Silicon Dioxide) 6X. Contains sucrose. Adults 4 tablets. Children 2 tablets. To be dissolved on the tongue. Take three doses a day. Increase to every half hour if needed.