Efudix

Basic Efudix information

• INN (international nonproprietary name): Fluorouracil
• Brand names available in the United Kingdom: Efudix
• ATC code: L01BC02
• Forms and dosages: Cream 5%
• Registration status in the United Kingdom: Prescription-only medicine (POM)
• OTC / Rx classification: Prescription-only medicine (POM)

Everyday use and best practices

Efudix cream is used on the skin, particularly for conditions like actinic keratosis. Apply it exactly as directed by your prescriber.

Morning vs evening dosing

Efudix cream is usually applied once or twice daily, as prescribed. Many people find it easiest to apply it as part of an established routine, for example in the morning and at bedtime. Ultimately, the choice of timing should be based on personal preference and lifestyle, and consistency is the key.

Taking with or without meals

Efudix is applied to the skin, so it can be used without any specific timing related to meals. The key is consistency. Some practical tips:

• Choose a regular time each day for application.
• Set a timer or use phone reminders to help integrate this treatment into your routine.

What’s inside and how it works

Ingredients overview

Efudix contains the active ingredient fluorouracil (5%), a cytotoxic agent used in the topical treatment of specific skin conditions. It targets rapidly dividing cells, making it effective against pre-cancerous lesions like actinic keratosis and superficial basal cell carcinomas. The cream also contains excipients (including arachis oil, so it must not be used in people allergic to peanuts), and systemic absorption through the skin is minimal.

Mechanism basics explained simply

Fluorouracil works by disrupting the DNA synthesis in skin cells. When applied to the affected area, it’s absorbed into the fast-growing cells, which are more sensitive to its effects. This prevents these cells from multiplying, allowing for controlled destruction of pre-cancerous and cancerous tissue. Over time, patients notice redness, scaling and sometimes erosion of the treated area, which is an expected reaction to the treatment.

Main indications

Approved uses

Efudix is licensed in the UK for the treatment of superficial pre-malignant and malignant skin lesions, including actinic (solar) keratosis, Bowen's disease and superficial basal cell carcinoma. These conditions are linked to excessive sun exposure. As a prescription-only medicine, its use is monitored by a healthcare professional.

Off-label uses in UK clinics

Dermatologists sometimes use Efudix off-label for other skin conditions, such as warts. Such use should only take place under specialist supervision, as Efudix is a potent medicine.

Interaction warnings

Food interactions

There are no known food or drink interactions with topical Efudix.

Drug conflicts

Tell your healthcare provider about all the medicines you use. Using other topical treatments on the same area may heighten the skin reaction, and fluorouracil can interact with some oral medicines if absorbed in large amounts, for example warfarin. Please report any suspected side effects through the Yellow Card scheme.

Alternative choices

For those seeking alternatives to Efudix, several options are available. These include:

• Aldara (imiquimod): Used for actinic keratosis and superficial BCC, with a different mechanism that boosts the immune response.
• Solaraze (diclofenac gel): A non-steroidal anti-inflammatory gel that can help treat actinic keratosis.
• Cryotherapy and photodynamic therapy: Procedures performed in clinic for actinic keratosis and some superficial skin cancers.

Each alternative has its pros and cons, which should be discussed with a healthcare provider. Treatment duration, frequency of application and potential side effects all influence the choice.

Regulation snapshot

In the UK, Efudix (fluorouracil cream) is licensed by the Medicines and Healthcare products Regulatory Agency (MHRA).

As a prescription-only medicine (POM), Efudix can only be obtained on a healthcare professional's prescription.

In the NHS prescribing framework, Efudix is used for the treatment of actinic keratosis and superficial basal cell carcinoma (BCC). Healthcare providers inform patients about proper usage and monitoring during treatment to ensure effectiveness and minimise side effects.

Frequently asked questions

Common questions about Efudix:

Can Efudix be purchased over the counter?

No, Efudix is a prescription-only medication in the UK. It cannot be bought over the counter and must be prescribed by a doctor.

How does Efudix work?

Efudix works by targeting rapidly dividing cells in pre-cancerous lesions and some skin cancers, effectively damaging their ability to reproduce.

What should I expect after using Efudix cream?

After applying Efudix, patients may experience redness, scaling, or slight irritation at the treatment site. This is a normal response as the medication works to eliminate abnormal cells.

Is Efudix safe to use?

Efudix can cause side effects. Patients with known allergies to fluorouracil, or to peanuts, should avoid it, and it must not be used in pregnancy or while breastfeeding. Consult a healthcare professional for advice tailored to your needs.

Guidelines for proper use

Essential guidelines:

• Application method: Clean the affected area gently and apply a thin film of Efudix, usually once or twice daily, to ensure full coverage of the lesion. Wash your hands thoroughly afterwards.
• Duration: Continue treatment for 3–4 weeks for actinic keratosis or up to 10–12 weeks for superficial BCC, as advised by a healthcare professional.
• Avoidance of certain areas: Do not apply Efudix near the eyes, mucous membranes, or on broken skin as it can cause irritation.
• Monitoring: Patients should check their skin regularly for any adverse reactions and report any severe irritation or side effects to their healthcare provider immediately.

NHS patient support services can provide educational materials about what to expect during treatment, when to seek help and how to manage side effects.

Delivery information