LMX4 Numbing Cream 5g

LMX4 Lidocaine 4%w/w Cream 5g

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LMX4 Lidocaine 4%w/w Cream 5g is a topical anaesthetic designed to temporarily numb the surface of the skin, helping to minimise discomfort from various minor procedures and skin irritations. Containing 4% Lidocaine, it provides effective, fast-acting relief for adults and children over 1 year (for specific applications as per the patient information leaflet).

Description

LMX4 Lidocaine 4%w/w Cream 5g contains 4% lidocaine, an active ingredient that works by temporarily numbing the skin. This helps to reduce pain and discomfort associated with various minor procedures and skin conditions, making it a valuable item for your first aid kit.

This topical anaesthetic cream is used by healthcare professionals and can be applied to intact skin to provide pain relief for:

  • Minor burns and sunburn
  • Insect bites, which may cause itching and discomfort
  • Painful topical treatments on larger surface areas of intact skin
  • Procedures such as laser hair removal, dermal fillers/injections, tattoo application & removal, bikini waxing, skin/laser surgery, medium depth peels, and permanent make-up.

LMX4 is a P medicine, meaning it is available without a prescription but requires consultation with a pharmacist. It is clinically proven to be fast-acting and safe for use across a range of applications, providing convenient, device-free application.

Always remember to read the patient information leaflet carefully before use and speak to a Weldricks pharmacist if you have any questions or concerns.

FAQ

What is LMX4 Lidocaine 4%w/w Cream 5g used for?

LMX4 Lidocaine 4%w/w Cream 5g is a topical anaesthetic used to temporarily numb the surface of the skin. It helps to relieve pain caused by minor procedures, such as needle insertions, and discomfort from minor burns, sunburn, or insect bites.

How does LMX4 Lidocaine 4%w/w Cream 5g work?

The active ingredient, Lidocaine 4%w/w, works by blocking nerve signals in the treated area of the skin. This temporary numbing effect reduces the sensation of pain, making minor procedures or skin irritations more comfortable.

 

Can LMX4 Lidocaine 4%w/w Cream 5g be used on children?

LMX4 Lidocaine 4%w/w Cream 5g can be used on children over 1 year of age for needle insertion. For larger surface areas, it is not recommended for patients below 18 years of age. Always consult the patient information leaflet or a healthcare professional for specific guidance on use for children.

How long does the numbing effect of LMX4 Lidocaine 4%w/w Cream 5g last?

The cream is typically applied 30 to 60 minutes before a procedure, and its numbing effect can last for several hours after removal, depending on the individual and application. Do not reapply for at least 12 hours after it has been removed.

 

Where can I buy LMX4 Lidocaine 4%w/w Cream 5g?

You can purchase LMX4 Lidocaine 4%w/w Cream 5g conveniently online at Weldricks Pharmacy, a trusted UK-based pharmacy. We offer free UK delivery on orders over £40 and discreet packaging.

Directions

LMX4 provides anaesthesia prior to administration of painful topical treatments on larger surface areas of intact skin. It can also be used to provide pain relief when inserting a needle into the skin and a vein.

Adults and the elderly aged 18 years and over:

  • Use 1.5g to 2g on each 10cm² area of skin, to cover a maximum total area of 900cm² (approximately equal to a back or thigh). Do not exceed the recommended dose.
  • Apply LMX4 approximately 30 to 60 minutes before the procedure starts.
  • Using the quantities stated above, apply the cream in a thin layer to the skin.
  • Ensure the cream is not accidentally rubbed off the skin.
  • After approximately 30 to 60 minutes, remove the cream with a tissue or gauze.
  • The procedure should begin shortly after removal of the cream.
  • The cream should not be reapplied for at least 12 hours after it has been removed.

For inserting a needle into the skin and a vein (Adults, including the elderly, and children over 1 year of age):

  • 1g of cream is approximately equal to a 5cm length of cream squeezed from the 5g tube.
  • Apply 1g to 2.5g of cream, to cover an area of skin 2.5cm x 2.5cm (1"x1") where the needle will be inserted. Do not leave on the skin for longer than 5 hours.
  • Apply LMX4 at least 30 minutes before the procedure starts.
  • Using the quantity stated above, apply the cream in a uniform layer to the skin.
  • If told to do so, cover the cream with a dressing, to prevent it being accidentally rubbed off the skin.
  • Shortly before the procedure is due to begin, remove the dressing and remove the cream thoroughly with a gauze swab.

Infants over 3 months but below 1 year of age (for needle insertion):

  • No more than 1g of cream should be applied. Do not leave on the skin for longer than 4 hours.

Infants over 1 month but below 3 months of age (for needle insertion):

  • No more than 1g of cream should be applied. Do not leave on the skin for longer than 1 hour.

Do not use on infants below one month old.

Do not use on patients below 18 years of age for large surface areas.

If you use more LMX4 than you should: Overdose is unlikely, but talk to your doctor or nurse straight away, even if you do not feel any symptoms. An overdose may include using more than the recommended amount, applying the cream to large areas or using the cream for longer than recommended. The following overdose symptoms may be experienced: blurred vision, dizziness or drowsiness, difficulty breathing, trembling, chest pain or an irregular heartbeat.

Patient Information Leaflet
Warnings

Take special care with LMX4:

Talk to your doctor or pharmacist before use if:

  • You are acutely ill, debilitated or elderly (you will be more sensitive to lidocaine).
  • You have a history of being sensitive to the ingredients of any medicines.
  • You have a severe liver (hepatic) disease.

Using with other medicines:

Tell your doctor or pharmacist if you have recently used any other medicines, with or without a prescription, but especially:

  • LMX4 or any other local anaesthetic.
  • Any medicine used to prevent or treat an irregular heart beat, such as tocainide, mexiletime or amiodarone.
  • The beta-blocker propranolol, for the treatment of hypertension.
  • Cimetidine, for the treatment of heartburn or stomach ulcers.

Always use LMX4 exactly as instructed. Ask immediately if you have any questions.

Precautions when using LMX4:

  • For external use only. Do not exceed the recommended dose.
  • Do not apply to raw or blistered skin, in the ear, inside the nose, in the mouth, to the anus (back passage), where there is a skin rash or irritated skin, or where there are cuts, grazes or wounds.
  • Avoid getting LMX4 cream in your eyes, as it may cause irritation. If you accidentally get any in your eye, immediately rinse it well with lukewarm water or sodium chloride (salt) solution and protect it until sensation returns.
  • LMX4 blocks all sensation in the treated area. Avoid scratching, rubbing and exposure to extreme hot and cold until the anaesthetic effect has worn off.
  • If you are about to receive a vaccination with live vaccine (e.g., tuberculosis vaccine), live vaccines should not be administered in areas where LMX4 has been applied as the effect of the vaccine may be affected.
  • If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask for advice before taking this medicine.

LMX4 contains:

  • This medicine contains 75mg propylene glycol in each 1g. Propylene glycol may cause skin irritation. Because this medicine contains propylene glycol, do not use it on open wounds or large areas of broken or damaged skin (such as burns) without checking with your doctor or pharmacist. Do not use on infants below one month.
  • This medicine contains 15mg benzyl alcohol in each 1g. Benzyl alcohol may cause allergic reactions or mild irritation.

Possible side effects: Like all medicines, this medicine can cause side effects, although not everybody gets them. An allergic reaction is rare, affecting up to 1 in 1000 people. Symptoms may include a rash, swelling, very low blood pressure or anaphylactic shock. If you experience an allergic reaction or anaphylactic shock, remove the cream and seek medical advice immediately. Skin irritation, redness, itching, dryness or rash at the site of application are common side effects which may affect up to 1 in 10 people. You may experience eye irritation if the cream is applied to or around the eye. Refer to 'Precautions when using LMX4' in Section 3 for what to do immediately after accidental eye exposure. If you get any side effects, talk to a doctor, nurse or other trained person involved in your treatment. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the MHRA's Yellow Card Scheme, available at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.

Ingredients

Active Ingredients: Lidocaine (4% w/w)

Inactive Ingredients: Benzyl Alcohol, Carbomer 940, Cholesterol, Hydrogenated Lecithin, Polysorbate 80, Propylene Glycol, Trolamine, Vitamin E Acetate, Water.

Product Information Leaflet

External content warning: this link will take you to a third party website.
We cannot guarantee the Patient Information Leaflet is accurate and is for reference only.

View the leaflet

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MissW on 06/01/2026

Bought as a recommendation to try to help with neuropathy. Unfortunately it didn’t work for me.

Verified purchase 24/12/2025 |

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