Napa Extra Tablet is used to treat painful conditions such as headache including migraine, which is characterized by a recurrent headache ranging in severity from moderate to severe, toothache, backache, pain and inflammation in the joints (rheumaticpain), painful monthly cycles (dysmenorrhoea) and fever (febrile conditions). It is also used to relieve the symptoms of colds, fluand sore throat. This medicine works by exerting a painkiller action and reducing the body temperature when you have a fever, the actions which are carried by paracetamol. Caffeine acts by helping enhance the effectiveness of paracetamol. This medicine helps by reducing body pain and fever.