What special precautions should I follow?  

Before taking acetaminophen, butalbital, and caffeine,

• tell your doctor and pharmacist if you are allergic to acetaminophen, butalbital, caffeine, or any other drugs.
• tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially anticoagulants ('blood thinners') such as warfarin (Coumadin), antidepressants, antihistamines, pain medications, sedatives, sleeping pills, tranquilizers, and vitamins. Many nonprescription pain relievers contain acetaminophen. Too much of this drug can be harmful.
• tell your doctor if you have or have ever had liver disease, porphyria, or depression.
• tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking this medication, call your doctor.
• you should know that this drug may make you drowsy. Do not drive a car or operate machinery until you know how this drug affects you.
• remember that alcohol can add to the drowsiness caused by this drug.

What special dietary instructions should I follow?  

Acetaminophen, butalbital, and caffeine may cause an upset stomach. Take this medicine with food or milk.

What should I do if I forget a dose?  

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.