What Is Butalbital and How Does It Work?

Butalbital as a single agent is discontinued. It is used in combination with acetaminophen or acetylsalicylic acid (aspirin) to treat pain and vascular headaches.


With acetaminophen: Fioricet

With acetylsalicylic acid (aspirin): Fiorinal

Dosages of Butalbital

Dosage Considerations – Should be Given as Follows:

Children under 12 years: Safety and efficacy not established

What Are Side Effects Associated with Using Butalbital?

Side effects associated with use of Butalbital, include the following:

Less common side effects of butalbital include:

This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.

What Other Drugs Interact with Butalbital?

If your medical doctor is using this medicine to treat your pain, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor, health care provider or pharmacist first.

Severe Interactions of butalbital include:

  • sodium oxybate

Butalbital has serious interactions with at least 51 different drugs.

Butalbital has moderate interactions with at least 301 different drugs.

Butalbital has mild interactions with at least 127 different drugs.

Butalbital has mild interactions with at least 39 different drugs.

This information does not contain all possible interactions or adverse effects. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share this information with your doctor and pharmacist. Check with your health care professional or doctor for additional medical advice, or if you have health questions, concerns or for more information about this medicine.

What Are Warnings and Precautions for Butalbital?


  • This medication contains butalbital. Do not take Fioricet or Fiorinal if you are allergic to butalbital or any ingredients contained in this drug.
  • Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center immediately


  • None

Effects of Drug Abuse

  • No information provided

Short-Term Effects

  • See "What Are Side Effects Associated with Using Butalbital?"

Long-Term Effects

  • See "What Are Side Effects Associated with Using Butalbital?"


  • No information available

Pregnancy and Lactation

  • Use butalbital with caution during pregnancy if benefits outweigh risks
  • Animal studies show risk and human studies are not available or neither animal nor human studies were done
  • Butalbital is excreted in breast milk; consult your doctor before breastfeeding
Medscape. Butalbital.

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