This combination medication is used to treat tension headaches. Acetaminophen helps to decrease the pain from the headache. Caffeine helps increase the effects of acetaminophen. Butalbital is a sedative that helps to decrease anxiety and cause sleepiness and relaxation. https://www.gabapentinshop.com/product-details/White-Butalbital-APAP-Caffeine-(Generic-Fioricet-)--50-325-40-mg--90-Tabs