Blistex Cold Sore Cream - 2g

Blistex Cold Sore Cream 2g is a clinically proven antiviral topical cream designed to help relieve the early stages of recurrent cold sores (labial herpes simplex infection) when used at the first sign of symptoms such as tingling, itching, redness or pain. It contains docosanol 10% w/w, a unique antiviral agent that penetrates the skin to help block the cold sore virus from entering healthy cells, supporting the inhibition of viral replication and promoting recovery.

To be effective, treatment should begin as soon as the first symptoms appear and continue through the early stages of cold sore development. Blistex Cold Sore Cream can help limit the severity and duration of cold sore outbreaks when applied promptly and correctly. 

Brand: Blistex

Active Ingredient: Docosanol 10% w/w

Pack Size: 2 g cream

Product Type: Cold sore antiviral cream

Adults and adolescents (12 years and over): Begin treatment at the first sign of cold sore symptoms, such as itching, tingling, redness or burning.

• Wash your hands before and after application to avoid spreading the virus.

• Apply a thin layer of Blistex Cold Sore Cream to the affected area using a clean fingertip or cotton bud.

• Repeat up to 5 times daily at approximately 3-hour intervals while awake.

• Continue treatment until the cold sore has healed, usually within 4–6 days, up to a maximum of 10 days.

• Do not start treatment once a blister or ulcer has already formed; the cream is most effective before blisters are visible. 

Active Ingredient:

• Docosanol 10% w/w – an antiviral agent that helps block the cold sore (HSV-1) virus from entering healthy skin cells and supports early treatment effects.

Other (Excipients):

• Sucrose stearates

• Light mineral oil

• Propylene glycol (E1520)

• Benzyl alcohol (E1519)

• Purified water

These excipients support the delivery and moisturising properties of the cream, helping with application and comfort.

Warnings & Precautions

• For external cutaneous use only. Do not apply in or near the eyes or mouth.

• Children under 12 years should not use this product.

• Treatment is intended for early cold sore symptoms only. Do not apply once blisters or ulcers have formed.

• Do not share the tube with others to avoid virus transmission.

• Consult a clinician or pharmacist before use if you are immunocompromised (weakened immune system).

• If symptoms do not improve after 10 days, stop use and seek medical advice.

• Keep out of the sight and reach of children.

• Store below 25 °C and use within 6 months of opening as stated on the tube and carton.

Possible Side Effects

As with all topical antiviral treatments, side effects may occur, although not everyone experiences them:

• Very common: Headache.

• Common: Dry skin, skin rashes, facial swelling or irritation at the application site.

• Rare allergic reactions may occur — discontinue use and seek medical advice if severe reactions arise.

If side effects persist or worsen, consult a clinician, pharmacist or report via the MHRA Yellow Card Scheme.