ROZEX Cream Ref.[27696] Active ingredients: Methronidazole

Source: Medicines & Healthcare Products Regulatory Agency (GB)  Revision Year: 2021  Publisher: Galderma (UK.) Limited, Meridien House, 69-71 Clarendon Road, Watford, Herts., WD17 1DS, UK

4.3. Contraindications

Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.

4.4. Special warnings and precautions for use

Contact with mucous membranes should be avoided.

Rozex Cream has been reported to cause lacrimation of the eyes, therefore, contact with the eyes should be avoided. If a reaction suggesting local irritation occurs patients should be directed to use the medication less frequently or discontinue use temporarily and to seek medical advice if necessary. Metronidazole is a nitroimidazole and should be used with care in patients with evidence of, or history of, blood dyscrasia. Exposure of treated sites to ultraviolet (e.g. solarium, sun-lamp) or strong sunlight (including sun-bathing) should be avoided during use of metronidazole. Metronidazole transforms into inactive metabolite due to UV exposure, therefore its efficacy decreases significantly. Phototoxic side-effects haven’t been reported in clinical trials in relation to metronidazole. Unnecessary and prolonged use of this medication should be avoided.

Evidence suggests that metronidazole is carcinogenic in certain animal species. There is no evidence to date of a carcinogenic effect in human (see section 5.3).

The excipient cetostearyl alcohol may cause local skin reactions (e.g. contact dermatitis). This medicine also contains 22mg benzyl alcohol (E1519) in each gram which is equivalent to 2.2%w/w, it may cause allergic reactions and mild local irritation.

4.5. Interaction with other medicinal products and other forms of interaction

Interaction with systemic medication is unlikely because absorption of metronidazole following cutaneous application of Rozex Cream is low. Nevertheless, it should be mentioned that disulfiram-like reactions have been reported in a small number of patients taking metronidazole and alcohol concomitantly. Oral metronidazole has been reported to potentiate the effect of warfarin and other coumarin anticoagulants, resulting in a prolongation of prothrombin time. The effect of topical metronidazole on prothrombin is not known. However, very rare cases of modification of the INR values have been reported with concomitant use of Rozex and coumarin anticoagulants.

4.6. Pregnancy and lactation

Pregnancy

There is no experience to date with the use of Rozex Cream in pregnancy. In case of oral administration, metronidazole crosses the placental barrier and rapidly enters the foetal circulation. No foetotoxicity was observed after oral metronidazole in either rats or mice. However because animal reproduction studies are not always predictive of human response and since oral metronidazole has been shown to be a carcinogen in some rodents this drug should be used in pregnancy only if clearly needed.

Breast-feeding

After oral administration, Metronidazole is excreted in breast milk in concentrations similar to those found in the plasma. Even though Metronidazole blood levels from topical administration are significantly lower than those achieved after oral administration, in nursing mothers a decision should be made to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

4.7. Effects on ability to drive and use machines

Rozex Cream has no influence on the ability to drive and use machines.

4.8. Undesirable effects

Because of the minimal absorption of metronidazole and consequently its insignificant plasma concentration after topical administration, the adverse experiences reported with the oral form of the drug have not been reported with Rozex Cream. Adverse reactions reported with Rozex Cream have been only local and mild.

System Organ ClassFrequencyAdverse drug reaction
Skin and subcutaneous tissue disordersCommon (≥1/100, <1/10) Dry skin, erythema, pruritus, skin discomfort (burning, pain of skin/stinging), skin irritation, worsening of rosacea.
Unknown frequencyContact dermatitis, swelling face, skin exfoliation
Nervous system disordersUncommon (≥1/1,000, <1/100) Hypothesia, paraesthesia, dysgeusia (metallic taste)
Gastrointestinal disordersUncommon (≥1/1,000, <1/100) Nausea

Watery eyes have been reported if applied too closely to this area.

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme at https://yellowcard.mhra.gov.uk/ or search for MHRA Yellow Card in the Google Play or Apple App Store.

6.2. Incompatibilities

Not applicable.

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