Treatment for food poisoning typically depends on the source of the illness and the severity of your symptoms. For most people, the illness resolves without treatment within a few days, though some types of food poisoning may last longer. Fluids and electrolytes — minerals such as sodium, potassium and calcium that maintain the balance of fluids in your body — lost to persistent diarrhea need to be replaced. Antibiotics if you have certain kinds of bacterial food poisoning and your symptoms are severe. Adults with diarrhea that isn t bloody and who have no fever may get relief from taking the medication loperamide (Imodium A-D) or bismuth subsalicylate (Pepto-Bismol). Avoid certain foods and substances until you re feeling better. These include dairy products, caffeine, alcohol, nicotine, and fatty or highly seasoned foods.