Dihydrocodeine works from the brain to change how One's body feels and responds to pain. Acetaminophen can also decrease a fever. Caffeine improves pain relief, specifically for certain types of headaches.Vi?c s? d?ng ??ng th?i opioid v?i thu?c an th?n nh? benzodiazepin ho?c các lo?i thu?c t??ng t? t?ng nguy c? an th?n, ?c ch? hô h?p, hôn mê v�