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Aspirin / Butalbital / Caffeine / Codeine Dosage

Medically reviewed by Last updated on Aug 3, 2023.

Applies to the following strengths: 325 mg-50 mg-40 mg-30 mg

Usual Adult Dose for Headache

1 or 2 capsules orally every 4 hours as needed not to exceed 6 capsules per day


  • Because of the risks of addiction, abuse, and misuse, prescribing should be reserved to patients for whom alternative options have not been tolerated or are not expected to be tolerated; and for patients for whom alternative options have not provided adequate analgesia or are not expected to provide adequate analgesia.
  • The safety and efficacy of treating multiple recurrent headaches with this product is not known.

Uses: For the relief of the symptom complex of tension (or muscle contraction) headache when nonopioid analgesic and alternative treatments are inadequate.

Renal Dose Adjustments

Mild to moderate renal failure: Use with caution; start with lower doses and longer dosing intervals; titrate slowly
Severe renal failure (CrCl less than 10 mL/min): Avoid use

Liver Dose Adjustments

Use with caution; start with lower doses and longer dosing intervals; titrate slowly

Dose Adjustments

Elderly: Dose selection should be cautious, usually starting at the low end of the dose range.

The drug should not be abruptly discontinued in the physically dependent person:

  • Taper gradually by 25% to 50% every 2 to 4 days while monitoring carefully for signs and symptoms of withdrawal
  • If signs or symptoms of withdrawal develop, raise the dose to the previous level and taper more slowly


The US FDA requires a Risk Evaluation and Mitigation Strategy (REMS) for all opioids intended for outpatient use. The new FDA Opioid Analgesic REMS is a designed to assist in communicating the serious risks of opioid pain medications to patients and health care professionals. It includes a medication guide and elements to assure safe use. For additional information:


  • Addiction, Abuse, and Misuse: Use of this drug exposes patients and other users to the risks of opioid addiction and misuse, which can lead to overdose and death. Assess each patient's risk prior to prescribing and monitor all patients regularly for the development of these behaviors or conditions.
  • Opioid Analgesic REMS: To ensure that the benefits of opioid analgesics outweigh the risks of addiction, abuse, and misuse, a REMS is required for these products. Under the requirements of the REMS, drug companies with approved opioid analgesic products must make REMS-compliant education programs available to healthcare providers. Healthcare providers are strongly encouraged to complete a REMS-compliant education program; counsel patients and/or their caregivers, with every prescription on safe use, serious risks, storage, and disposal of these products; emphasize to patients and their caregivers the importance of reading the Medication Guide every time it is provided by their pharmacist, and consider other tools to improve patient, household, and community safety.
  • Life-Threatening Respiratory Depression: Serious life-threatening or fatal respiratory depression may occur. Monitor for respiratory depression, especially during initiation or following a dose increase.
  • Accidental Ingestion of/exposure to even one dose, especially by children, can result in a fatal overdose.
  • Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. Reserve concomitant prescribing for patients for whom alternative treatment options are inadequate; limit dosages and durations to the minimum required; and follow patients for signs and symptoms of respiratory depression and sedation.
Ultra-Rapid Metabolism of Codeine and Other Risk Factors for Life-Threatening Respiratory Depression in Children: Life-threatening respiratory depression and death have occurred in children who received codeine. Most of the reported cases occurred following tonsillectomy and/or adenoidectomy, and many of the children had evidence of being an ultra-rapid metabolizer of codeine due to a CYP450 2D6 polymorphism. This drug is contraindicated in children younger than 12 years of age and in children younger than 18 years of age following tonsillectomy and/or adenoidectomy. Avoid the use of this drug in adolescents 12 to 18 years of age who have other risk factors that may increase their sensitivity to the respiratory depressant effects of codeine.
  • Neonatal Opioid Withdrawal Syndrome can result from prolonged maternal opioid use during pregnancy; it may be life-threatening if not recognized and treated; it should be managed according to protocols developed by neonatology experts. If opioid use is needed for a prolonged period in a pregnant woman, advise patient of the risk of neonatal opioid withdrawal syndrome and ensure appropriate treatment be available.
  • Interactions with Drugs Affecting CYP450 Isoenzymes: The effects of concomitant use or discontinuation of CYP450 3A4 inducers/inhibitors or CYP450 2D6 inhibitors are complex; concomitant use requires careful consideration of the effects on the parent drug, codeine, and the active metabolite, morphine.

Safety and efficacy have not been established in patients younger than 18 years.

Consult WARNINGS section for additional precautions.

US Controlled Substance: Schedule III


Data not available

Other Comments

Administration advice:

  • Take orally as needed
  • Do not exceed 6 capsules per day

Storage requirements: Protect from light and moisture

  • This combination product is not indicated in children because of the risk of life-threatening respiratory depression; it is contraindicated for use in children less than 12 years and children less than 18 years following tonsillectomy and/or adenoidectomy; it should not be used in children 12 to 18 years of age with risk factors for respiratory depression.
  • Due to risk of Reye's syndrome with aspirin use, this product should not be given to children, especially during a viral illness.

  • Monitor for potential abuse
  • Monitor for respiratory depression and signs of morphine overdose
  • Monitor liver function tests in patients with severe hepatic disease
  • Monitor renal function tests in patients with severe renal disease

Patient advice:
  • Patients should be instructed to read the US FDA-approved Medication Guide each time this drug is dispensed; they should understand the safe use, serious risks, and proper storage and disposal of this drug.
  • Patients should be advised that this drug has the potential to cause physical and psychological dependence, and tolerance; patients should be instructed to take this drug as prescribed, in the amounts prescribed, and no more frequently than prescribed.
  • Patients should understand the risks of life-threatening respiratory depression and when this risk is greatest, patients should be aware that a genetic mutation may result in greater toxicity in some patients.
  • Patients should understand that this drug contains aspirin and should not be taken by patients with an allergy or sensitivity to aspirin.
  • Patients should be advised to avoid alcohol and performance of potentially hazardous tasks (such as driving a car) while taking this drug.
  • Women of childbearing potential should be advised to speak to their healthcare provider if they become pregnant, intend to become pregnant, or are breastfeeding.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.