Cold sores

Antiviral aciclovir tablets and cream for the treatment of topical cold sores. Relieving symptoms, faster healing.

Read medical information and answer medical questions to buy treatment online.

Treatment available

Prices
Aciclovir tablets pack photo

Aciclovir tablets (200mg)

25-50 tablets from £10.50

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Aciclovir cream pack photo

Aciclovir cream 5% (2gm-10gm)

Tubes from £4.50

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Prices

Treatment typeQuantityCost
Aciclovir 200mg tablets25 tablets (one treatment)£10.50
Aciclovir 200mg tablets50 tablets (two treatments)£15.00
Aciclovir cream 5%2gm tube£4.50
Aciclovir cream 5%4gm (2 x 2gm tube)£7.00
Aciclovir cream 5%10gm (large tube)£11.00

Prescription issued online - small prescription fee per order.

Prescription fees

Dr Fox supplies medicine on prescription and charges a small prescription fee based on the order value of each prescription.

Prescriptions are issued by our doctors online and sent electronically to our pharmacy.

If you have your own private or NHS paper prescription please post to our pharmacy (details).

Dr Fox prices are 25%–50% lower than other UK online clinics.

Order valuePrescription fee
up to £10£1.00
up to £20£2.00
up to £40£3.00
over £40£4.00

Delivery charges

UK delivery only: £2.90 per consultation via Royal Mail 24 Signed For (1-3 working days with tracking).

Parcel forwarding services are not permitted. Use only UK home or work delivery address.

Returns and refunds - unwanted items can be returned within 14 working days for a full refund.

Medical information

Cold sores are sores on the lips caused by the herpes virus. Aciclovir tablets and cream are antiviral treatments which reduce the severity and duration of cold sores. Tablets may be a more convenient treatment than cream.

Aciclovir cream and tablets

Aciclovir cream or tablets are supplied by Dr Fox to treat recurrent cold sore on the lips. Some people have cold sores which come up time and again in the same place on the lips. These cold sores usually break out at times of stress or in response to triggers such as fatigue, cold weather, or strong sun or wind exposure. In some cases cold sores come up without an obvious trigger. Early treatment with either aciclovir cream or tablets will usually reduce the severity and the duration of the sore.

Treatment with either tablets or cream should be started as soon as symptoms start, even at the tingling stage, before a sore breaks out on the skin surface. Typically there is tingling at the site of a cold sore for 24 to 48 hours before a sore breaks out. If treatment is started more than a few days after the onset of symptoms, it is likely to be ineffective.

Dose of aciclovir

Apply aciclovir cream or take one aciclovir 200mg tablet 5 times daily (every 4 hours during the day time, leaving out a dose overnight). Tablets can be swallowed whole or dissolved in water and are continued for 5 days (25 tablets total in one course). Cream is usually continued for about the same length of time, until the sore has almost completely healed. Both treatments are equally effective.

Higher strength aciclovir tablets are made (aciclovir 400mg and 800mg), but are not available from Dr Fox. Higher strength tablets and higher dose treatments are usually reserved for severe or frequent infections, first infections, or infection in immunodepressed patients. In these circumstances a face-to-face consultation with a doctor is advised. Some patients take aciclovir long term to prevent outbreaks of cold sores or genital herpes. This requires prolonged or high dose treatments, and is not available from Dr Fox.

Cautions

Aciclovir cream can be used by almost all people, unless they are sensitive to it. Most people can take aciclovir tablets, even with other prescribed medication. People with significantly reduced kidney function may require reduced doses of aciclovir tablets.

Pregnancy and breast feeding: The manufacturers of aciclovir cream and tablets advise avoidance in pregnancy and breast feeding. This is precautionary advice, and there is no evidence of harm to developing pregnancies or breast-fed infants.

Side effects of aciclovir

Most people do not experience significant side effects. Of those who experience side effects the most common (affecting between 1 in 10 and 1 in 100) are dizziness and headache or nausea, vomiting, diarrhoea and abdominal pain, or fatigue and fever. People who have been diagnosed with a neurological illness should consult their doctor before taking aciclovir tablets.

People who are affected by drowsiness should not drive or operate machinery.

A full list of cautions and side effects can be found in the manufacturer's patient information leaflets.

Aciclovir 10gm cream and aciclovir 200mg tablets are prescription only medicine – our doctors will issue the prescription online direct to our pharmacy.

Cold sores and genital herpes

Cold sores are sometimes called the 'kissing disease'. Spread of herpes is more likely when there is an open sore on the surface of the skin. This is the time when the virus is being shed from the surface of the skin and is most likely to be spread from one person to another.

Cold sores are caused by the same types of herpes viruses which cause genital herpes infections. Herpes virus infection can spread by direct contact from the lips to the genital region, or vice versa. Cold sores can also be spread from the lip region of one person to the lip region of another and from the genital region of one person to the genital region of another.

Is it a cold sore?

People who have had cold sores before usually recognise the symptoms, mainly because the sores come up in exactly the same place each time. Most cold sores usually last a week or 10 days before completely healing, usually without scarring. If symptoms are not improving after a few days, or are worsening, or there is a high fever and generalised flu like symptoms, consult a doctor.

People who have not had cold sores before, and have symptoms for the first time, should consult a doctor.

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 aciclovir, which is an antiviral.

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.

Below is a photograph of a typical cold sore.
photo of a cold sore

Buy treatment

Dr Fox supplies Aciclovir on prescription – you are required to answer a short medical questionnaire before your order can be completed.


Authored 18 February 2015
by Dr Tony Steele

Reviewed 04 January 2017 by Dr B. Babor, MB ChB

Last updated 20 September 2018


  1. Medical questions
  2. Choose treatment
  3. Complete order

Answer medical questions to order(cold sore treatment)

Have you read the medical information on cold sores and aciclovir?

See brief medical information.

Are planning to use aciclovir whilst pregnant or are breast feeding?

Have you been diagnosed with reduced immunity from any cause?

For instance you have had a bone marrow transplant or low white count.
Note: most people who are troubled with cold sores have normal immune systems.

Have you been diagnosed with kidney disease?

Includes conditions which could reduce kidney function – does not include occasional urinary infections.

Are you taking the medication probenecid (used to treat gout)?

Are you aware aciclovir cream is not for internal use or for use in or around the eye?

Not for use in the vagina, mouth or anus.

Are you aware you should seek medical advice if sores are getting worse or are not healing after 10 days?

Do the following apply to you?


The order process

Answer short medical questionnaire

Choose treatment, register, and pay

Doctor issues prescription online

Medicine posted direct from pharmacy


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