PRIODERM LIQUID, DERBAC M LIQUID is a brand name for Malathion. The medicine, its uses, side effects and dosage are the same regardless of brand.
Used for: Eradication of head lice, pubic lice and their eggs. Treatment of scabies.
Verbatim from this product's MHRA label. Tap a section to expand.
For topical external use only Adults, the elderly and children aged 6 months and over: As this product does not contain alcohol, it may be more suitable for those with asthma or eczema. Treatment of head lice Rub the liquid into the scalp until all the hair and scalp is thoroughly moistened.
Leave the hair to dry naturally in a warm but well ventilated room. After 12 hours, or the next day if preferred, shampoo the hair in the normal way. Rinse the hair and comb whilst wet to remove dead lice and eggs (nits) using the Derbac Nit Comb.
Treatment should be repeated after 7 days. Treatment of crab (pubic) lice Apply Derbac-M Liquid/Prioderm Liquid to the entire skin surface. Pay particular attention to all hairy areas including beards and moustaches. Avoid any other areas above the neck.
Leave on for at least one hour before washing but preferably Derbac-M Liquid/Prioderm Liquid should be left on overnight. Wash off in the usual manner. Treatment should be repeated after 7 days. Treatment of scabies Apply Derbac-M Liquid/Prioderm Liquid to the entire skin surface.
In adults it may not be necessary to apply above the neck but children under the age of two years should have a thin film of Derbac-M Liquid/Prioderm Liquid applied to the scalp, face and ears, avoiding the eyes and mouth. Do not wash off or bathe for 24 hours.
If hands or any other parts must be washed during this period, the treatment must be reapplied to those areas immediately. Treatment should be repeated after 7 days. No special sterilisation of clothing is necessary, ordinary laundering or dry- cleaning with hot-iron pressing are sufficient.
The infestation is cleared by the treatment. However, the itching and rash may persist for up to 7 days. An anti-irritant cream can be applied if necessary. Family members and close contacts should also be treated simultaneously.
Children under 6 months:
Under medical supervision only.
Skin irritation and hypersensitivity reactions such as anaphylaxis, angioedema, and swollen eyes have been reported with malathion products. Chemical burns have also been reported. 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. uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store
Avoid contact with the eyes. For external use only. Do not use on broken or secondarily infected skin. Keep out of the reach of children. If inadvertently swallowed, a doctor or casualty department should be contacted at once. When Derbac M Liquid/Prioderm Liquid is used by a school nurse or other health officer in the mass treatment of large numbers of children, it is advisable that protective plastic or rubber gloves be worn.
Continued prolonged treatment with this product should be avoided. It should be used not more than once a week and for not more than 3 consecutive weeks.
Known sensitivity to malathion. Not to be used on infants less than 6 months except on medical advice.
Not medical advice. Always read the patient information leaflet and follow your prescriber or pharmacist.
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