What is fluorouracil topical?
Fluorouracil interferes with the growth of skin cells. Fluorouracil works by causing the death of cells which are growing fastest, such as abnormal skin cells.
Fluorouracil topical is used to treat scaly overgrowths of skin (actinic or solar keratoses). Fluorouracil topical may also be used in the treatment of superficial basal cell carcinoma.
Fluorouracil topical may also be used for purposes other than those listed in this medication guide.
What is the most important information I should know about fluorouracil topical?
Do not use fluorouracil topical on skin that is irritated, peeling, or infected or on open wounds. Wait until these conditions have fully healed before using fluorouracil topical.
Fluorouracil topical is in the FDA pregnancy category X. This means that it is known to harm an unborn baby. Miscarriage and birth defects have been reported when fluorouracil topical was applied to mucous membrane areas by pregnant women. Do not use fluorouracil topical if you are pregnant or planning a pregnancy. Discuss with your doctor appropriate forms of birth control before starting treatment with fluorouracil topical.
Fluorouracil topical is available in a number of strengths and forms (creams and solutions). It is very important that you use the correct form and strength. Contact your doctor or pharmacist if you have questions regarding which product to use.
Avoid exposure to sunlight or artificial UV rays (e.g., sun lamps) during and immediately following treatment with fluorouracil topical. Use a sunscreen with a minimum sun protection factor (SPF) 15 and wear protective clothing when sun exposure is unavoidable. Individuals with fair skin may require a sunscreen with a higher SPF rating.
What should I discuss with my healthcare provider before using fluorouracil topical?
Before using fluorouracil topical, tell your doctor if you:
have ever had an allergic reaction to another form of fluorouracil topical (Carac, Efudex, Fluoroplex) or injectable fluorouracil (Adrucil, 5-FU); or
have dihydropyrimidine dehydrogenase (DPD) enzyme deficiency.
You may not be able to use fluorouracil topical, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.
Fluorouracil topical is in the FDA pregnancy category X. This means that it is known to harm an unborn baby. Miscarriage and birth defects have been reported when fluorouracil topical was applied to mucous membrane areas by pregnant women. Do not use fluorouracil topical if you are pregnant or planning a pregnancy. Discuss with your doctor appropriate forms of birth control before starting treatment with fluorouracil topical.
It is not known whether fluorouracil topical passes into breast milk. Do not use fluorouracil topical without first talking to your doctor if you are breast-feeding a baby.
The safety and effectiveness of fluorouracil topical in patients younger than 18 years of age have not been established.