Drug Interactions With Acetaminophen

Some of the medications that may cause acetaminophen drug interactions include warfarin, carbamazepine, cholestyramine, and barbiturates. These interactions may affect the way your body handles acetaminophen, which can make both drugs less effective and more toxic. If you take other products that contain acetaminophen, you should not take more than 4000 mg total of the drug per day.

 

Acetaminophen Interactions: An Overview

Acetaminophen (Tylenol®) can potentially interact with other medications. Some of the medicines that may lead to drug interactions with acetaminophen include:
 
  • Alcohol
  • Barbiturates, such as:
 
    • Amobarbital (Amytal®)
    • Butalbital (Fioricet®, Fiorinal®)
    • Pentobarbital (Nembutal®)
    • Phenobarbital (Luminal®)
    • Secobarbital (Seconal®)
 
 
 
(Drug Interactions With Acetaminophen Continued: Page 2)
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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;