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Variety of delivery options including next day & free delivery.
Pharmacy, clinic and prescribers based in Greater Manchester.
Start your treatment with a quick and free online consultation.
Fill in a quick online consultation for our licensed pharmacists to review.
Our pharmacists will review your treatment to ensure it’s suitable.
Your treatment will be delivered to your door quickly & discreetly.
Derbac M Liquid is a malathion 0.5% w/v cutaneous solution used for the treatment of head lice and their eggs (nits). It works by killing live lice and preventing further infestation when used correctly. This clinically proven head lice treatment is suitable for adults and children over 6 months of age.
Derbac M Liquid is applied directly to dry hair and scalp and left on for 12 hours to ensure effective treatment. A second application is usually required after 7 days if live lice are still present.
| Medication Name | Derbac M Liquid 0.5% w/v Cutaneous Solution |
| Active Ingredient | Malathion 0.5% w/v |
| Other Ingredients | methylhydroxybenzoate (E218), propylhydroxybenzoate (E216), emulsifying wax, potassium citrate, citric acid, perfume HT52 and water |
| Medication Form | Topical cutaneous liquid for scalp and hair |
| Used to Treat | Head lice and their eggs (nits) |
| Available Size | 150ml bottle |
| Who Can Use It | Adults and children over 6 months of age |
| Prescription Required? | No – Pharmacy (P) medicine |
Derbac M Liquid is used for the effective treatment of head lice infestation in adults and children. It kills lice and helps eliminate their eggs when applied correctly and left on for the full recommended treatment time.
Derbac M is suitable for adults and children aged over 6 months.
Do not use Derbac M Liquid if you:
Speak to a healthcare professional before use if you:
Avoid contact with eyes and face. If accidental contact occurs, rinse immediately with plenty of water.
Most people use Derbac M without problems. However, possible side effects include:
Stop use and seek medical advice if severe skin reactions occur.
EXCELLENT Based on 121 reviews Posted on Hema Mehta06/09/2024 Very friendly and helpful. Moved my order to urgent as was needed in a certsin timeframe. So grateful for their help and service.Posted on Uju Udedibia30/08/2024 Great experience and an amazing, receptive and lovely staff. I recommend this pharmacy.Posted on Lindsey Whitaker22/08/2024 I had my blood taken today by the lovely lady at the pharmacy. It was a really great service and so reasonably priced. I will definitely be using their phlebotomy services again.Posted on Joanne Royle22/08/2024 Wonderful service I went for diabetes test after failing to getting sorted with my own doctors. Lady that did my test was fantastic. The staff are friendly and very welcoming. I would recommend them 100%. I will definitely use them again in the futurePosted on Ifeanyi Ohanyere16/08/2024 I visited the pharmacy to do a genotype test. The staff were so kind and supportive as I was coming from out of town. Turn around was quick. I highly recommend.
Page content authored by Amjad Khan, last reviewed by Dr Hussain Ahmad on 6th March 2026.




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