What is Fioricet? Fioricet is a prescription medication that combines three key ingredients: acetaminophen, butalbital, and caffeine. Acetaminophen is a pain reliever and fever reducer, butalbital is a barbiturate that relaxes muscle contractions, and caffeine acts to enhance the effects of acetaminophen. Buy Fioricet 40 mg Online With Overnight Shipping How to use it? Dosage Guidelines:...