What is side effects of Generic Fioricet ?

Nausea, vomiting, abdominal pain, shaking (tremor), shortness of breath, increased urination, lightheadedness, dizziness, drowsiness, or trouble sleeping may occur.

Frequency Not Defined


  • Dizziness, drowsiness, feeling of intoxication, lightheadedness, sedation
  • Abdominal pain, nausea, vomiting
  • Shortness of breath


  • Angioedema, laryngeal edema
  • Pruritic maculopapular rash, urticaria
  • Agranulocytosis, leukopenia, neutropenia, pancytopenia, thrombocytopenia, thrombocytopenic purpura
  • Hepatotoxicity
  • Anaphylactoid reaction


  • Tachycardia, palpitations (dose dependent)
  • Insomnia, irritability, nervousness, restlessness, tinnitus, tremor
  • Diarrhea, nausea, vomiting
  • Diuresis

If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

To reduce your risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.

Stop using Fioricet and call your doctor at once if you have:

    • confusion, seizure (convulsions);
    • shortness of breath;
    • a light-headed feeling, like you might pass out; or
    • nausea, upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).