FURACIN^® 2 mg/g ointment (Nitrofurazone)

Name: Furacin^®
Presentation: 30 and 100 g of ointment..
Active substance: Nitrofurazone.
Method of administration: Topical use.

Alternative treatment for second- and third-degree burns. Skin infections. Preparation of skin graft surfaces, where bacterial contamination can cause graft rejection or infection at the donor site, especially in hospitals with a history of bacterial resistance.

Medicinal product subject to medical prescription.

RRP* (Pomada 30 g): 8,46€

RRP* (Pomada 100 g): 14,05€

(Not financed by the National Health System)

MORE INFORMATION:

See the entire FURA RANGE

1 - NAME OF THE MEDICINAL PRODUCT

Furacin 2 mg/g ointment.

2 - QUALITATIVE AND QUANTITATIVE COMPOSITION

Composition per 1 g of ointment:

Nitrofurazone 2 mg

Excipients:

- - - - Macrogol 300 526 mg
      - Macrogol 1500 400 mg
      - Macrogol 4000 12 mg

For the full list of excipients, see section 6.1.

3 - PHARMACEUTICAL FORM

Ointment

4 - CLINICAL PARTICULARS

4.1 Therapeutic indications

Furacin 2 mg/g ointment is indicated in adults.

Local application as an alternative treatment for second- and third-degree burns.

Skin infections. Preparation of skin graft surfaces, where bacterial contamination can cause graft rejection or infection at the donor site, especially in hospitals with a history of bacterial resistance.

4.2 Posology and method of administration

Topical use.

- - Adults

Apply directly to the lesion or spread on a sterile gauze first; apply once a day or every few days, depending on the dressing technique.

If the symptoms get worse or do not improve after 3 days of treatment, the clinical situation should be evaluated.

- - Elderly

For elderly patients, see section 4.4.

- - Paediatric population

There is no experience in children, see section 4.4.

4.3 Contraindications

Hypersensitivity to the active substance or to any of the excipients.

4.4 Special warnings and precautions for use

There may be overgrowth of non-susceptible organisms, including fungi or Pseudomonas, resulting in secondary infection (see section 4.8).

Treatment should be discontinued and the patient should be advised to contact their doctor in case of overgrowth, secondary infection, irritation or sensitisation reactions.

Renal impairment

Due to its content of macrogols as excipients, Furacin should be administered with caution to patients with known or suspected renal dysfunction, as they may be absorbed through the skin and their accumulation may result in symptoms of progressive renal impairment, such as increased BUN (blood urea nitrogen), high anion gap and metabolic acidosis (see section 4.8).

Paediatric population

The safety and efficacy of nitrofurazone in children have not been established. No appropriate studies have been conducted in children on the relationship between the effects of nitrofurazone and age.

Elderly

Elderly patients are likely to have age-related deterioration of renal function, which may require an adjustment of the nitrofurazone dose. No studies have been conducted in elderly patients on the relationship between age and the effects of nitrofurazone.

Warnings about excipients

Due to the presence of macrogols (polyethylene glycols) as excipients, caution is required in patients with renal dysfunction, as they may be absorbed through the skin and cause symptoms of progressive renal impairment (see Patients with renal impairment, above).

4.5 Interaction with other medicinal products and other forms of interaction

No interaction studies have been performed.

4.6 Fertility, pregnancy and lactation

Fertility

There are no data regarding the possible effects of nitrofurazone on fertility.

Pregnancy

There are no or limited amount of data on the use of nitrofurazone in pregnant women. Animal studies are insufficient with respect to reproductive toxicity (see section 5.3).

Furacin is not recommended during pregnancy unless the potential benefit justifies any potential risk to the foetus.

Breast-feeding

It is unknown whether nitrofurazone is excreted in human milk. A risk to the new-borns/infants cannot be excluded. A decision must be made whether to discontinue breast-feeding or to discontinue/abstain from Furacin therapy, taking into account the benefit of breast-feeding for the infant and the benefit of therapy for the woman.

4.7 Effects on ability to drive and use machines

This medicine has not been reported to have any effect on the ability to drive and use machines.

4.8 Undesirable effects

Skin and subcutaneous tissue disorders

Common (³1/100 to <1/10): approximately 1% of patients may experience contact dermatitis (redness, itching, rash, swelling, etc.).

Frequency not known (cannot be estimated from the available data): opportunistic mycoses could also occur (see section 4.4).

Renal and urinary disorders

Frequency not known (cannot be estimated from the available data): symptoms of progressive renal impairment such as increased BUN (blood urea nitrogen), high anion gap and metabolic acidosis may occur in case of build-up of macrogols (excipients) in patients with renal dysfunction (see section 4.4 Special warnings and precautions for use).

If adverse reactions are observed, they should be reported via the Pharmacovigilance systems and, if necessary, treatment should be discontinued.

4.9 Overdose

In individuals with normal renal function, applying the product topically is unlikely to result in overdose.

In case of accidental ingestion, bear in mind that nitrofurazone is toxic when administered orally, and adverse effects include severe peripheral neuropathy; haemolysis may occur in patients with glucose-6-phosphate dehydrogenase deficiency.

Accidental ingestion is unlikely due to the appearance and taste of Furacin, and the amount of nitrofurazone ingested is not likely to cause toxicity.

If necessary, symptomatic treatment should be given.

5 - PHARMACOLOGICAL PROPERTIES

5.1 Pharmacodynamic properties

Pharmacotherapeutic group: Nitrofuran derivatives, ATC code: D08AF.

Nitrofurazone is a broad-spectrum antibiotic that acts by inhibiting bacterial enzymes involved in the metabolism of carbohydrates. It is effective against gram-negative and gram-positive organisms. It is bactericidal against most of the bacteria that normally cause superficial skin infections, including Staphylococcus aureus, Streptococcus, Escherichia coli, Enterobacter cloacae, Clostridium perfringens, Aerobacter aerogenes and Proteus species. It is not particularly active against most classes of Pseudomonas and it does not inhibit viruses or fungi.

The use of nitrofurazone may allow overgrowth of non-susceptible organisms (see section 4.4).

Its exact mechanism of action is not known. Nitrofurazone inhibits several bacterial enzymes, especially those involved in the aerobic and anaerobic breakdown of glucose and pyruvate. This activity is also thought to affect pyruvate dehydrogenase, citrate synthase, malate dehydrogenase, glutathione reductase and pyruvate decarboxylase.

5.2 Pharmacokinetic properties

Under normal conditions of external use, nitrofurazone is not absorbed into the systemic circulation in significant amounts, even in the presence of burns.

There is evidence that macrogols are absorbed when applied to damaged skin and are predominantly excreted unchanged in the urine (see section 4.4).

Topical nitrofurazone preparations are readily soluble in blood, pus and serum and do not cause maceration.

5.3 Preclinical safety data

Adverse reactions not observed in clinical studies but seen in animals with oral administration are:

Carcinogenicity:

High oral doses of nitrofurazone have caused breast tumours in female rats. The relevance for topical use in humans is not known.

Embryotoxicity:

Nitrofurazone has been shown to have embryocidal effects in female rabbits treated with oral doses equivalent to 30 times the usual human dose.

6 - PHARMACEUTICAL PARTICULARS

6.1 List of excipients