A combination of three drugs in Fioricet work to offer tension headache relief. Fioricet contains Acetaminophen which works as an analgesia by stopping the body from making prostaglandins in the central nervous system. In addition, analgesia occurs by a peripheral motion of blocking pain impulse growth. Butalbital causes sensory cortex depression by limiting the conduction in the reticular formation at the rate of the thalamus. Read the rest of this entry »