Do not use this medicine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.

You should not use acetaminophen, butalbital, and caffeine if you are allergic to it, if you have porphyria, or if you have recently used alcohol, sedatives, tranquilizers, or other opioids.

Tell your doctor if you have ever had:

• liver disease, cirrhosis, a history of alcoholism or drug addiction, or if you drink more than 3 alcoholic beverages per day;
• kidney disease;
• stomach ulcer or bleeding;
• a history of skin rash caused by any medication; or
• a history of mental illness or suicidal thoughts.

It is not known whether this medicine will harm an unborn baby. If you use butalbital while you are pregnant, your baby could become dependent on the drug. This can cause life-threatening withdrawal symptoms in the baby after it is born. Babies born dependent on habit-forming medicine may need medical treatment for several weeks. Tell your doctor if you are pregnant or plan to become pregnant.

This medicine can pass into breast milk and may harm a nursing baby. Tell your doctor if you are breastfeeding a baby.

Not approved for use by anyone younger than 12 years old.