Skip to Content

Acetaminophen / Butalbital / Caffeine / Codeine Dosage

Applies to the following strength(s): 325 mg-50 mg-40 mg-30 mg ; 300 mg-50 mg-40 mg-30 mg

The information at is not a substitute for medical advice. Always consult your doctor or pharmacist.

Usual Adult Dose for:

Additional dosage information:

Usual Adult Dose for Headache

1 or 2 capsules orally every 4 hours, not to exceed 6 capsules per day.

Renal Dose Adjustments

Caution and monitoring are recommended in patients with renal insufficiency.

Liver Dose Adjustments

Caution and monitoring are recommended in patients with hepatic insufficiency.


Contraindicated in patients with porphyria.

Concomitant use of other CNS depressants or alcohol should be avoided.

To avoid habituation, patients should be advised not to take this drug in higher doses, more frequently, or for longer than prescribed.

Safety and effectiveness have not been established in pediatric patients.


Data not available

Other Comments

The FDA has asked manufacturers to limit the maximum amount of acetaminophen in prescription products to 325 mg per dosage unit. There are no data that indicate that taking more than 325 mg of acetaminophen per dosage unit provides more pain relief. The goal of the FDA is to reduce the risk of severe liver injury from acetaminophen overdose, which can lead to liver failure, liver transplant, and even death. The total number of units that may be prescribed and the time intervals for dosing will not change. Drug companies will have until January 14, 2014 to comply with FDA requirements.