SIDE EFFECTS: Skin irritation, burning, redness, dryness, pain, swelling, tenderness, or changes in skin color may occur at the site of application. Eye irritation (e.g., stinging, watering), trouble sleeping, irritability, temporary hair loss, or abnormal taste in the mouth may also occur. If any of these effects persist or worsen, contact your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if any of these rare but very serious side effects occur: stomach/abdominal pain, bloody diarrhea, vomiting, signs of infection (e.g., fever, chills, persistent sore throat), easy bruising/bleeding, mouth sores. A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

PRECAUTIONS: Before using fluorouracil, tell your doctor or pharmacist if you are allergic to it; or to flucytosine; or to capecitabine; or if you have any other allergies. This product may contain inactive ingredients (such as peanut oil found in some brands), which can cause allergic reactions or other problems. Talk to your pharmacist for more details. This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: a certain enzyme deficiency (dihydropyrimidine dehydrogenase - DPD). Before using this medication, tell your doctor or pharmacist your medical history, especially of: red/irritated/infected/open sores on skin. This medication may make you more sensitive to the sun. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors. After using fluorouracil cream, wait 2 hours before applying sunscreen or moisturizer to the treated area. Do not use other skin products including creams, lotions, medications, or cosmetics unless instructed by your doctor to do so. Tell your doctor right away if you get sunburned or have skin blisters/redness. This medication must not be used during pregnancy. It may harm an unborn baby. If you become pregnant or think you may be pregnant, inform your doctor right away. Consult your doctor for more details and to discuss reliable forms of birth control. It is not known if this medication passes into breast milk. Due to the potential risk to a nursing infant, breast-feeding is not recommended while using this drug. Consult your doctor before breast-feeding.

DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first. Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

OVERDOSE: This medicine may be harmful if swallowed. If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.