Fioricet is a prescription medication primarily used for the treatment of tension headaches. It combines three active ingredients: acetaminophen, butalbital, and caffeine. Each component of Fioricet contributes to its efficacy in managing headaches through different mechanisms of action. This comprehensive description covers its composition, mechanism of action, medical uses, dosage forms, pharmacokinetics, adverse effects, contraindications, precautions, special populations, regulatory status, and clinical considerations.