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Cold Sore Treatment

Aciclovir Cream 5%
Pack Size: 10g
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RRP*: £25.00
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Our Price: £19.95
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 Wash your hands before and after applying the cream. This will prevent your cold sore or genital herpes from getting worse or spreading, or you infecting someone else.

  • Apply the cream to the affected area 5 times daily (about every four hours) for 5 days.

  • If your cold sore or genital herpes has not healed after five days of treatment you can continue using the cream for another five days.

    If you forget to use Aciclovir cream:
    If you forget to apply the cream, apply it as soon as you remember and then apply the next treatment at the usual time.

    If you accidentally swallow Aciclovir cream:
    Aciclovir cream is for use on cold sores on the lips and surrounding skin and herpes on the genitals only. You are very unlikely to suffer any bad effects if you accidentally swallow Aciclovir cream. However, if you notice any unusual effects or are worried tell your doctor or contact the Accident and Emergency Department of your nearest hospital. 

Aciclovir cream is used to treat cold sores on the lips, face and on the outside of the genitals.

Aciclovir cream reduces the severity and duration of cold sores

Aciclovir cream is most effective if treatment started as soon as a sore starts. Cream is applied in a thin layer direct to the surface of the sore at the earliest sign of any symptoms. Cream is applied five times daily, 4 hourly during the day. Wash hands after applying cream to prevent spread of the virus.

Treatment will not work if it is started beyond five days from the start of a sore.

Sores starting around the nose that are yellow sticky and crusty, and spread out over a period of a few days are likely to be impetigo, not cold sores. Impetigo is a bacterial infection treated with antibiotics, not antiviral cream

Cold sores usually run their course and heal up in 7-10 days.

The first time a person gets the cold sore virus they may be quite unwell with severe pain, fever and swollen glands. A GP may prescribe antiviral tablets for a first infection or very severe recurrent cold sores.

Cold sores come up when dormant herpes virus infection in the skin breaks out on the surface. Triggers for this breakout of infection include being run down, stressed, and even sun and wind exposure. Some people just get recurrent cold sores for no reason.

Typical cold sore

Cold sores break out repeatedly in the same place. The skin often tingles and burns before the sore breaks open. Cold sores usually heal completely within 10 days without scarring.

Aciclovir cream is used in the treatment of genital herpes and cold sores. Once genital herpes or a cold sore has appeared, treatment with Aciclovir cream can accelerate the healing process.

The active substance in Aciclovir cream is aciclovir. Aciclovir is
an antiviral agent that has been shown to be effective in treating infections caused by the herpes simplex virus, such as genital herpes and cold sores. 

  1. Like all medicines, Aciclovir cream can cause side effects, although not everybody gets them.

    Some people may experience side effects, particularly when they first start using the product.
    These side effects may include

    a burning or stinging where the cream has been applied, mild drying or flaking of the skin, redness of the skin and itching.

    If you get a skin rash you may be allergic to the cream. Stop using it and tell your doctor immediately. 

  • Aciclovir cream is not for use in the mouth or inside the vagina.
  • If sores have not healed after ten days medical advice is needed.
  • Sores that are spreading into new areas and are very sticky or thickly crusted may be due to bacterial infection (impetigo) and require antibiotic treatment.
  • Cold sores occurring with increasing frequency may be a sign of reduced immunity for which medical advice should be sought.
  • Manufacturers of aciclovir advise against its use for women who are pregnant or breast-feeding.

Taking other medicines: Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines, including medicines obtained without a prescription. This is especially important if you are taking:

• Probenecid (used for gout). 

About Cold Sores

Cold Sores Background

THE Medical Online Doctor service allows patients who require a supply of antiviral cream for cold sores to have a private consultation with a doctor and receive the treatment they require in a safe and discreet manner.

Most people are familiar with cold sores, the small blisters or scabs that develop on the lips. Cold sores are caused by the herpes simplex virus and occur after an outbreak when virus levels build up. Cold sores will often start in the ‘tingle’ phase where there is a tingling, itching or burning sensation in the area before a breakout where the blisters occur. The blisters or sores usually last for around 7 to 10 days and will clear up without treatment. If you start treatment at the tingle stage, you can sometimes prevent the outbreak from happening. 

Cold sores are caused by one of the herpes simplex virus family known as HSV-1. In rare cases cold sores can be caused by HSV-2, however this is normally due to having oral sex with a person who has genital herpes.

Cold sores are highly contagious and are passed on by direct contact, normally through kissing or sharing lipsticks or cutlery. Once you have HSV-1, it lies dormant in the nerves until an outbreak, normally caused by a trigger factor. Some people can get outbreaks every few months whereas others can go for years without a cold sore.


Cold Sores Symptoms

Cold sores occur when levels of the herpes simplex virus build up causing an outbreak of small blisters on the lips. The outbreak of cold sores is usually caused in response to trigger factors that can include:

  • A low immune system (possibly due to another infection or illness)
  • Fever or high temperature
  • Stress or being upset
  • Tiredness or fatigue
  • Exposure to strong sunlight
  • Injury to the mouth or lips
  • Menstruation

Although an outbreak normally occurs in response to a trigger factor, cold sores can occur randomly where there is no obvious trigger. 

When you are first infected with HSV-1, it is unlikely you will experience any symptoms during the primary infection and it may be some time before your first outbreak. Symptoms of the primary infection of herpes simplex can be more severe and may include: 

  • Sore throat
  • Swollen glands
  • Bad breath (halitosis)
  • Painful sores in and around the mouth

After the primary infection, recurrent bouts of herpes simplex outbreaks will normally only cause cold sores without any of the symptoms described above. Cold sores normally follow a regular pattern: 

  1. ‘Tingle’ Phase: a tingling, itching or burning sensation that acts as a sign that an outbreak is imminent in the area it is experienced.
  2. Outbreak: small, fluid-filled sores or blisters develop around the area where the ‘tingle’ phase occurred. The outbreak normally occurs 12 – 48 hours after the ‘tingle’ phase starts. Some of the cold sores may ooze or weep if
  3. Healing: the cold sores will stop oozing and start to scab over. They will slowly reduce in size and the irritation will ease. They will normally completely heal in 7 – 10 days.

Cold sores are contagious from the start of an outbreak until they have completely healed. They are most infectious during the outbreak when they have burst and are oozing. 

Cold Sores Diagnosis

Cold sores can normally be self-diagnosed without the need to see your GP. If your primary infection is severe you may wish to see your GP for treatment.

Cold Sores Treatment

Antiviral cream such as aciclovir is the first line treatment for recurrent outbreaks of cold sores. If used correctly, they can speed up the healing time of cold sores or even prevent the break out in some cases.

It is important when using cold sore treatment creams like aciclovir, that they are applied as soon as possible after the ‘tingle’ phase begins. This gives it the best chance of preventing the outbreak or speeding up the healing time. Once the cold sore has blistered or scabbed, antiviral cream will have less effect. 

Antiviral cold sore creams like aciclovir prevent the herpes simplex virus from spreading and multiplying. It is normally applied five times daily for at least 4 – 5 days. Cold sore treatments help to treat the current outbreak, however they do not ‘cure’ the herpes simplex infection or prevent future cold sore outbreaks. Antiviral cold sore creams should not be used as a preventative measure to stop outbreaks when there are no signs of one occurring. 

General tips for treating cold sores

  • Ensure you stay hydrated by drinking plenty of fluids. This will stop your lips becoming dry and cracked.
  • Try to avoid acidic or salty foods, as this will irritate your cold sore further.
  • Use an antiseptic mouthwash 2 – 3 times daily if brushing your teeth is too painful.
  • When applying cold sore cream to the area, dab it on and let it soak in rather than rubbing it in.
  • Avoid touching the cold sore and surrounding area wherever possible.
  • If you do touch you cold sore, such as when you are applying cold sore cream, make sure you wash your hands thoroughly using soap and water.
  • Don’t share your cold sore cream with others.

Cold Sores Prevention

How to minimise the spread of cold sores

You can’t completely remove the risk of becoming infected with cold sores however there are many steps you can take to reduce the risk of you catching HSV-1 or passing it on to others.

  • Avoid touching the cold sore and surrounding area wherever possible.
  • If you do touch you cold sore, such as when you are applying cold sore cream, make sure you wash your hands thoroughly using soap and water.
  • Don’t share your cold sore cream with others.
  • Do not share any other items that may have come into contact with your cold sore or the surrounding area, such as mugs, cutlery or lipsticks.
  • Avoid kissing or having oral sex whilst you or your partner has a cold sore. Wait until it has completely healed so they are no longer contagious.
  • Be especially careful around those who may have a low immune system such as young babies, pregnant women and those undergoing chemotherapy or who have HIV.

Preventing recurrent outbreaks of cold sores

Outbreaks of cold sores are normally caused by exposure to trigger factors that can be specific to the individual. Examples of the most common trigger factors for cold sores are given above in the ‘Symptoms’ section. By avoiding the trigger factors for your cold sores you can reduce the frequency of cold sore outbreaks.

By applying antiviral cold sore creams such as aciclovir as early as possible into the ‘tingle’ phase, you can sometimes prevent breakouts from happening. There is no benefit to using cold sore creams continuously to prevent cold sores. 

*RRP is based on the highest price found for a comparable online service found on 04/09/14.

THE Medical Online Doctor service is owned and operated by Total Health Ethos Limited (Company Reg. 6170784). All orders are fulfilled by our pharmacy partners, BSM Healthcare Ltd (Company Reg. 08515600) and Red Label Medical Ltd (Company Reg. 08676338). All information that appears on this website is intended for information purposes only and should be used to supplement, not replace, your relationship with your local healthcare professionals. You should consult your doctor if you think you may have a health problem or before you start taking a new medicine. Please ensure you always read the information leaflets supplied with any medicinal products. For more information see our policies and terms and conditions at the bottom of every page. © 2017 Total Health Ethos Limited. All rights reserved.
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