. "It is not safe to use more than 4 grams (4,000 milligrams) of acetaminophen in one day (24 hours).Drugs and Foods to AvoidAsk your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.Make sure your doctor knows if you are using a blood thinner such as warfarin (Coumadin??).Do not drink alcohol while you are using this medicine.W" . . .