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Pharmacy, clinic and prescribers based in Greater Manchester.
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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.
GOOD Based on 184 reviews Posted on Google Bradley Robinson30/04/2026 Absolutely Amazing staff! Such a help thank you so muchPosted on Google Samiur Rahman30/04/2026 Best pharmacy in the UK. The staff here are very helpful, empathetic, understanding and compassionate. Brilliant customer service and staff are actual people who use their discretion to help people.Posted on Google Vivien donnellon29/04/2026 Extremely efficient and knowledgeable information given. All my questions were answered and also some advise regarding the issue. Thank you RehanaPosted on Google james watkins22/04/2026 Brilliant device ordered yesterday received it today
Page content authored by Amjad Khan, last reviewed by Dr Hussain Ahmad on 6th March 2026.




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