- Ovarian cancer
- Colon and rectal cancer
- Gastrointestinal cancers
- Head and neck cancer
- Liver cancer
- Use reliable contraception – avoid a pregnancy
- Don't breastfeed while taking this drug, because it may leach into breast milk
- Drink lots of fluids, especially water, to flush your kidneys and bladder
- Avoid alcohol and caffeine
- Don’t take aspirin
- Don’t get vaccinations
- Allergic reaction to Fluorouracil
- May harm fetus, if you become pregnant during treatment
- Possible future infertility
- Low blood counts, greater danger of infections
- Neutropenia (low white blood cell count, greater risk of infection)
- Chemotherapy-induced anemia (low red count)
- Thrombocytopenia (low platelet count)
- Hair loss, or thin, brittle hair
- Nausea
- Vomiting
- Diarrhea
- Fatigue
- Mucositis (irritated mucous membrane in your mouth)
- Loss of appetitite
- Amenhorrea (monthly menstrual cycle stops)
- Changes in nails (brittle or yellowed)
- Hand and foot syndrome
- Fever of 100.5°F or higher
- Chest pain (possible heart problems)
- Pain at your injection site
- Hold ice chips in your mouth during your infusion to help prevent mouth sores (some patients also rest their hands or fingers in ice during an infusion)
- Brush your teeth gently with a soft toothbrush and avoid scraping your gums
- Take your anti-nausea medications on time
- Stay out of direct sunlight
- Rest as much as you can
- Eat a healthy diet including foods that help control diarrhea
Sources:
U.S. Food and Drug Administration FDA Oncology Tools Product Label Details in Conventional Order for fluorouracil, 5-FU.
National Cancer Institute. Drug Information – Fluorouracil. Last Updated: 08/10/2007.

