Derbac M Liquid 150ml - Scabies Treatment

Buy Derbac M | For Head Lice & Nits | Ashcroft Pharmacy
  • Buy Derbac M | For Head Lice & Nits | Ashcroft Pharmacy
  • Derbac M Liquid - 150ml for Scabies, head lice | Ashcroft Pharmacy

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Derbac M Liquid 150ml - Scabies Treatment

Fastest delivery:
Wednesday, 17 Jul 2024
  • Medication features

    Treatment for scabies, head lice, & pubic lice

    Derbac M liquid: A quick, reliable and highly effective treatment for scabies / crab lice. Provides immediate relief from itching. Suitable for asthma, sensitive skin, eczema or pregnant/breast feeding mom. Effective within 12-24 hrs.

    • Effectively clears scabies / head lice and nits
    • Formulated to provide faster and effective actions
    • Kills mites and eggs for complete elimination
    • Over 97-98% effective
    • Cutaneous emulsion
    • Applied directly to the skin
    • Wash off after 12 hrs. or overnight
    • 100% Alcohol free
    • Ideal for adults & aged 6 months and over
    • Repeat the treatment after 7 days
    • Direct subdtitute Permethrin
    • Patient Leaflet
    • Price match Guarantee

    Ashcroft Pharmacy UK registered online pharmacy
    Registered UK Pharmacy Number 1039428

Order in the next for Wednesday delivery

Fastest delivery: Wednesday, 17 Jul 2024


NOTE: After selecting this product, you will need to complete a short assessment, so we can make sure this medication is suitable for you.

Buy Derbac M Online - Scabies Treatment

Derbac M liquid emulsion is a versatile antiparasitic medication commonly prescribed to treat scabies, head lice, nits, and crab lice infestations.

The active ingredient in Derbac M is malathion, an insecticide that works by disrupting an enzyme in the nit or mite, preventing its growth and leading to its death.

Derbac lotion is suitable for both adults and children over 6 months old, making it a great choice for the whole family. Additionally, due to its alcohol-free composition, it is an excellent choice for individuals dealing with eczema or asthma.

You might be scabies-free and back to your normal routine after just two applications of treatment, one week apart. Just follow the instructions on how to use it safely and effectively. If you have any questions, ask your doctor.

How does Derbac M lotion work?

Derbac M works by using malathion (organophosphates), an insecticide that disrupts the nervous system of lice and scabies.

When applied to the skin, malathion penetrates the parasites, causing paralysis and eventual death. It's important to follow the product's instructions carefully, and combing the hair after treatment helps remove dead lice and eggs.

How effective is Derbac M for scabies, head lice?

Efficacy: Recent efficacy studies in the United States for head lice treatment demonstrated high efficacy rates of 97-98% for malathion, the main element in Derbac M.

This suggests that malathion is highly effective in treating head lice, especially in the context of resistance to other treatments like permethrin (Lyclear) cream and lindane.

First-Line Option: Malathion is described as a first-line option for head lice, particularly in the era of resistance to permethrin and lindane.

Scabies Treatment: For scabies, malathion is mentioned as a reasonable alternative to permethrin 5% cream, especially when treatment of the scalp or hairy areas is desired.

In summary, malathion is presented as a safe and effective option for the treatment of head lice and scabies, with a focus on its efficacy and potential as a first-line treatment in certain cases.

How to apply Derbac M Liquid?

Application: Derbac M liquid is applied directly to the skin from the neck down, including between the fingers and toes, and left on for 8-12 hours.

For treating head lice:

✅ Shake the bottle
✅ Apply enough Derbac M liquid on dry hair, ensuring complete scalp coverage
✅ Spread the liquid from the roots to the tips, making sure it covers the hair evenly
✅ Let hair dry naturally in a warm, well-ventilated room
✅ After 12 hours or the next day, shampoo your hair as usual
✅ Repeat the treatment after 7 days

⚠️ After applying the treatment, wash your hair and use a nit comb to comb through wet hair. This helps remove dead lice and eggs.

For treating Crab (pubic) lice:

Apply Derbac M liquid emulsion to the entire skin surface
✅ Be careful with hairy areas like eyebrows, facial hair, beards, and mustaches during use
✅ Leave on for at least 1 hour, preferably overnight, before washing off
✅ Repeat the treatment after 7 days

For treating Scabies:

✅ Apply Derbac M lotion to the entire skin surface, paying close attention to all hairy areas, including:

  • Between fingers and toes
  • Wrists and elbows
  • Armpits
  • Palms of hands
  • Soles of feet
  • Under fingernails and toenails

✅ In adults, you might not need to apply it above the neck. For kids under 2 years, just put a thin layer on the scalp, face, and ears (but NOT inside the ears, eyes and mouth).
✅ Repeat the treatment after 7 days.

❌ Do not wash off or bathe for 24 hours. If hands or other parts must be washed during this period, reapply immediately to those areas.

Who should not use Derbac M Liquid?

❌ Do not use this medicine if allergic to Malathion or its ingredients. Avoid applying on infants under 6 months unless advised by a doctor.

Reviewed By
NameMr Suhail Jamil
RoleSuperintendent Pharmacist
Gphc Number2069518



⚠️ Always apply this medicine exactly as explained in the leaflet or as directed by your doctor or pharmacist. If you're unclear about something, please consult your doctor for clarification.

If one family member requires treatment, check others for live lice using a detector comb and treat them if necessary.

⚠️ Apply Derbac-M when your skin is cool and dry. Allow your skin to air dry after applying the treatment, and leave it on for 12-24 hrs.

⚠️ If you wash your hands with soap during this time, reapply the liquid to your hands. After 12-24 hrs., you can remove the liquid by taking a bath or shower.


Application Schedule: Use Derbac M liquid twice, with a seven-day gap between applications.

Duration on Skin:

  • If treating head lice, leave each application on for 12 hours.
  • If treating Crab (pubic) lice, Leave on for at least 1 hour, preferably overnight before washing.
  • If treating scabies, leave each application on for 24 hours.
  • Please see the Patient Leaflet for full instruction

Wash Off: After the specified time, wash off the malathion with soap and water.

Family/Contacts Treatment: Treat all affected family members or contacts on the same day for effective management.


Warnings and Precautions:

  • Don't use this product for a long time or too often
  • Use it only once a week and not more than three weeks in a row
  • If you're a healthcare pro treating many patients, wear gloves
  • Keep it away from your eyes, mouth, and inside your ears
  • Only use this medicine on your skin
  • Don't use on broken or infected skin
  • Never swallow it. If you do, contact a doctor or hospital right away
  • This product has substances that might cause allergic reactions, especially if you have sensitive skin\
  • If you have sensitive skin, try a small amount first
  • If you have asthma, talk to a doctor or pharmacist before using it
  • Read the Patient Leaflet carefully before using

⚠️ If you're pregnant, breastfeeding, planning to have a baby, or think you might be pregnant, talk to your doctor or pharmacist before using this product.


  • What to do if you swallow or get Derbac M liquid in your eyes?

    If you accidentally ingest the liquid or get it in your eyes, ensure to only use the medicine on your skin. Cover the eyes with a towel to protect them.

    If the liquid enters the eyes, wash with plenty of water. If swallowed, contact your doctor or pharmacist right away.

  • How long does it take to work?

    Derbac M liquid starts working instantly but may take a bit of time to be fully effective and kill the parasites completely. It depends on what you're treating—lice or scabies. For head lice, you leave it on for about 12 hours, and for scabies, it's usually 24 hours.

    After that, wash it off with soap and warm water. The itching may not go away right away, but over time, it should help get rid of the problem. If you're unsure or worried, ask a doctor for advice.

  • Where Can I buy Derbac M liquid online in the UK?

    You can order Derbac M liquid online through our UK-registered online pharmacy, Ashcroft Pharmacy.

    Once you've completed your assessment and checkout process, our in-house pharmacist will review your order to determine if the treatment suits you.

    If approved, our pharmacy team will prepare and send your medication to your provided address

  • Is permethrin better than malathion or Derbac M liquid?

    The choice between permethrin and malathion for the treatment of head lice or scabies depends on various factors, including the specific circumstances, individual preferences, and the advice of healthcare professionals.

    Both permethrin and malathion are insecticidal medications used topically to treat infestations of lice and scabies. However, Compared with permethrin: Malathion  or Derbac M liquid may be more effective at eradicating head lice at 14 days compared to 7 days based on very low-quality evidence.

  • What is an alternative to derbac m?

    An alternative to Derbac M, which contains malathion, includes products with different active ingredients such as permethrin, pyrethrin, ivermectin, benzyl alcohol, or spinosad.

    Consult with a healthcare professional for personalized recommendations based on your specific situation.

  • What is the possible cons of Derbac?

    The disadvantages of malathion include its strong odor, potential for skin irritation, flammability, organophosphate properties, concerns about resistance development, and limitations in use for certain populations.

  • Why is Derbac M out of stock?

    If you are experiencing difficulty finding Derbac M in stock, you can order Derbac M liquid online easily through our UK-registered online pharmacy, Ashcroft Pharmacy at the lowest price.

Side Effects

Possible side effects of Derbac M liquid

Like all medicines, this medicine can cause side effects, although not everybody
gets them.

1. Skin Irritation:

  • Possible side effect of the medicine
  • May cause discomfort or redness on the skin

2. Allergic Reactions:

  • Can happen, though not for everyone
  • Severe reactions may include difficulty in breathing, dizziness, or swelling of face, throat, and eyes.

3. Chemical Burns:

  • Rare, but reported side effect
  • Some individuals have experienced burns from the medication

⚠️ Remember, these effects don't occur in everyone, and if you notice anything unusual, it's important to consult with a doctor.

⚠️ If you think you're having a bad reaction to this medicine or experience any side effects not mentioned in this leaflet, seek medical advice immediately. For UK citizens : You can report them using the MHRA Yellow Card Scheme.


Derbac M liquid product specification
Medicine typeinsecticide
Used toTreat scabies, head lice and crab lice
Also calledDerbac-M®
Available formLiquid or lotion for use on the skin and scalp
Brand nameDerbac-M®
Lowest price£23.99
Treatment duration12-24 hrs.
Effective in8-12 hrs.

About Head lice

Head lice are tiny insects that live on the human scalp and feed on blood from the scalp. They are small, about 2-3 millimeters in size, and can be challenging to spot. Head lice are common among young children and their families.

They're not related to having dirty hair only. Head lice commonly spread from person to person through direct head-to-head contact, especially within families or among children who have close interactions at school. Finding them in hair can be tricky. The eggs, called nits, are brown or white and stick to the hair.

If you have head lice, your head might feel itchy or like something is moving. The only sure way to know is by finding live lice. Use a special comb (detection comb) to do this; you can get one online or at a store.

To get rid of head lice, treat them when you see them. You don't need a doctor for this. Check everyone at home and start treating anyone with head lice on the same day. Kids with head lice can still go to school; there's no need to keep them home.

About Scabies

Scabies is an itchy skin condition that results in a rash. It's caused by an infestation of a tiny parasite called the Sarcoptes scabiei mite, which lives on and burrows into the skin.

Some additional details about scabies:

Transmission: Scabies is highly contagious and is usually spread through prolonged, direct skin contact with an infected person.

It can also be transmitted through infested clothing, bedding, or towels. Another common way of catching scabies is through close skin-to-skin contact during sexual activity.

Burrowing: The female scabies mite burrows into the top layer of the skin, laying eggs as it moves. This burrowing activity, along with the body's allergic response to the mites, leads to the characteristic intense itching and rash associated with scabies.

Common Sites of Infestation: The hands are often the first affected area, possibly due to prolonged hand-holding with an infected person.

Scabies can affect various parts of the body, including the wrists, elbows, armpits, genital area, buttocks, and feet. In infants and young children, it can also involve the face, scalp, and neck.

Symptoms: The primary symptoms of scabies include intense itching, especially at night, and the appearance of small, red bumps or pimple-like rashes. The itching is a result of the body's allergic reaction to the mites and their waste.

Diagnosis: Scabies is often diagnosed based on the characteristic appearance of the rash and the presence of burrows, especially in the webbing between the fingers, wrists, and elbows.

In some cases, a skin scraping may be examined under a microscope to confirm the presence of scabies mites.

Treatment: Scabies is treatable with prescription medications such as topical creams or oral medications. Permethrin cream, Derbac and oral ivermectin are commonly used to eliminate the mites.

It's important to follow the prescribed treatment regimen and take steps to decontaminate clothing, bedding, and personal items to prevent reinfestation.

Incubation Period: It may take several weeks for symptoms to appear after initial exposure, making it possible for individuals to unknowingly spread the infestation during this incubation period.

Prevention: To prevent the spread of scabies, it's essential to avoid close skin-to-skin contact with infected individuals and to practice good hygiene.

Additionally, washing clothing and bedding in hot water and vacuuming living spaces can help eliminate mites and prevent reinfestation.

If someone suspects they have scabies or has been in close contact with an infected person, it is advisable to consult a healthcare professional for an accurate diagnosis and appropriate treatment.


Once your order has been approved by our UK medical team it will be dispatched via Royal mail. All orders are sent using a tracked and signed for service.

Royal Mail 48 (2-5 days) | £3.49

Estimated delivery within 2-3 working days. Excludes bank holidays. Not a guaranteed service.

Free delivery on orders over £50.

Royal Mail 24 (Next working day) | £4.99

Estimated delivery within 1 working day. Excludes bank holidays. Not a guaranteed service.

Royal Mail Special Delivery Guaranteed by 1pm | £9.95

Order by the 2:00 PM weekday cut-off time for guaranteed delivery by 1:00 PM the next business day.

Orders placed after the cut-off on Friday will be delivered on Tuesday.

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Derbac M Liquid 150ml - Scabies Treatment

Medication Ashcroft Pharmacy
1 Bottle £18.99
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2 Bottles £37.98
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3 Bottles £56.97
Order now