Fluorouracil skin preparations are used to treat skin growths caused by sun damage.
Wash your hands thoroughly after applying the preparation.
Treated areas are likely to become swollen, red and sore. This will pass as the skin heals.
About fluorouracil cream/solution
|Type of medicine||A topical treatment for sun-damaged skin|
|Used for||Treating solar keratosis and simple skin cancers|
|Also called||Efudix®; Actikerall® (fluorouracil with salicylic acid)|
|Available as||Efudix® is available as a cream; Actikerall® is available as a topical solution|
A solar keratosis is a small, thickened, scaly growth which develops on the skin. It is the most common skin condition resulting from sun-damaged skin. Solar keratoses are also known as actinic keratoses. Solar keratoses usually develop on areas of skin which have received a lot of sun exposure. They are usually harmless, but there is a small risk that they may eventually turn into skin cancer. In themselves, solar keratoses are not cancerous.
Topical treatments (meaning you apply them to the skin) are useful if you have a lot of small solar keratoses. Fluorouracil is one of the treatments often used. It kills the abnormal skin cells and fresh normal skin grows back. The brand name for fluorouracil cream is Efudix®. Salicylic acid is another treatment that is sometimes used. It softens hard areas of skin. A solution containing fluorouracil with salicylic acid (brand name Actikerall®) is particularly helpful if the skin growths are thickened.
Fluorouracil cream is also used as a treatment for a type of skin cancer called basal cell carcinoma. This kind of skin cancer typically develops on sun-exposed areas of skin, and is usually caused by sun damage.
Before using fluorouracil
To make sure this is the right treatment for you, before you start using fluorouracil it is important that your doctor knows:
- If you are pregnant, trying for a baby or breast-feeding.
- If you are under 18 years of age.
- If you have any problems with the way your kidneys work.
- If you have ever had an allergic reaction to a skin preparation.
- If you are taking any medicines, particularly if you are taking medicines to treat chickenpox or shingles.
How to apply fluorouracil
- Before you start this treatment, read the manufacturer's printed information leaflet from inside your pack. The manufacturer's leaflet will give you more information about fluorouracil and a full list of the side-effects which you may experience from using it.
- Use the preparation exactly as your doctor tells you to.
- If you are using Efudix® cream, it is usual to apply a thin layer of the cream to the affected area, once or twice daily. You may be asked to use a dressing to cover the area after you've applied the cream, if this is practicable. Remember to wash your hands thoroughly after using the cream. This is so that you don't inadvertently get it on healthy areas of your skin. The cream is usually applied for 3-4 weeks, but your skin will continue to heal for a month or two after the treatment has finished.
- If you are using Actikerall® solution, dab a little of the solution on to the affected areas using the brush provided, once daily. It will form a film over the areas as it dries. You will need to remove this film on the following day, before you apply more of the solution. Remember to wash your hands thoroughly after each time you use the solution. You may be asked to use the solution for up to three months, but your skin will continue to heal for a month or so even after you've finished the course of treatment.
- Only use fluorouracil on your skin - you must avoid it coming into contact with your eyes and mouth. If this does happen, wash the area with plenty of warm water straightaway.
- As you use fluorouracil, the area of skin you are treating will become red, itchy, swollen and sore. The top layer of skin may bleed, blister and peel before it begins to heal. This reaction can be quite severe, but it is only temporary. Your doctor can prescribe a corticosteroid cream to help ease the discomfort.
Getting the most from your treatment
- Try to keep your regular appointments with your doctor. This is so your doctor can check on your progress.
- Some people find it helps to apply a moisturising cream to the skin around the damaged areas to help soften the skin.
- Sunlight can increase the inflammation caused by fluorouracil. To prevent this, try to stay out of direct sunlight as much as possible while you are using the preparation. On bright or sunny days, use a sun cream with a high sun protection factor (SPF). This will help to prevent further sun damage and will also help keep your skin moisturised.
- When you have had a lot of sun exposure, your risk of developing a skin cancer (melanoma) on some other part of your skin is increased. Check your skin regularly and tell a doctor if you notice any changes, such as new moles, small dark patches developing, or a change in an existing mole.
- There is some general advice which will help prevent any further sun damage to your skin. Avoid being out in the sun between 11 am and 3 pm. Always use a broad-spectrum sunscreen with an SPF of 30 or higher, and which protects against both UVB and UVA light. Apply plenty of the sunscreen, and re-apply it regularly, particularly after swimming and if you are sweating a lot.
Can topical fluorouracil cause problems?
Local irritation including itching, redness, a burning sensation, peeling, swelling and inflammation can all occur. These effects are normal and show that the fluorouracil is working. If the discomfort becomes severe or troublesome, discuss it with your doctor, as a corticosteroid cream can be prescribed to help ease the reaction.
If you experience any other symptoms which you think may be due to fluorouracil, speak with your doctor or pharmacist for advice.
How to store fluorouracil
- Keep all medicines out of the reach and sight of children.
- Store in a cool, dry place, away from direct heat and light.
- Check the expiry date information on the package. Once the cream has been opened, it will only keep for three months and should not be used after this time.
- The solution is flammable. Make sure the bottle is stored tightly closed.
Important information about all medicines
Make sure that the person prescribing this medicine knows about any other medicines that you are taking or using. This includes medicines you buy and herbal and homeopathic medicines.
This preparation is for use on the skin only. If someone swallows some of it, go to the accident and emergency department of your local hospital. Take the container with you, even if it is empty.
If you buy any medicines check with a pharmacist that they are safe to take with your other medicines.
If you are having an operation or any dental treatment, tell the person carrying out the treatment which medicines you are taking or using.
This medicine is for you. Never give it to other people even if their condition appears to be the same as yours.
Do not keep out-of-date or unwanted medicines. Take them to your local pharmacy which will dispose of them for you.
If you have any questions about this medicine ask your pharmacist.
Further reading and references
Manufacturer's PIL, Efudix Cream®; Meda Pharmaceuticals, The electronic Medicines Compendium. Dated December 2015.
Manufacturer's PIL, Actikerall® 5 mg/g + 100 mg/g Cutaneous Solution; Almirall Limited, The electronic Medicines Compendium. Dated January 2017.
British National Formulary 73rd Edition (Mar 2017); British Medical Association and Royal Pharmaceutical Society of Great Britain, London.
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