Aciclovir Tablets
Aciclovir Tablets

Aciclovir Cold Sore Tablets

From: £13.99

Aciclovir 200mg tablets is an antiviral medication used to treat infections caused by the herpes simplex virus including cold sores. This medication is available on prescription and can be ordered through our service by completing a short and simple consultation form for delivery in discreet & confidential packaging.

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    Aciclovir, also referred to as acyclovir, is a antiviral medication that targets the herpes simplex virus. It is used to treat a range of conditions caused by the virus including cold sores, genital herpes, chickenpox and shingles.

    This treatment is available at a strength of 200mg, which is taken 5 times a day for five days to treat cold sores. It should be taken as soon as you get the first signs of an infection and in most cases, you should start to feel better and see its effects within a few days.


    As with all medications, aciclovir tablets does carry a risk of potential side effects although not all individuals will experience them.

    Common side effects include headaches, dizziness, and feeling or being sick. For more information regarding the side effects, please view the patient information leaflet.

    If you have any questions, our pharmacy support team will be more than happy to help.

    How do you take Aciclovir 200mg tablets?

    You should aim to start taking this medicine as soon as you get the first signs of infection.

    A cold sore usually starts with a tingling, itching or burning feeling.

    You will need to take aciclovir 200mg tablets at a dose of one tablet five times a day for five days, for example, you could take it at 7am, 11am, 3pm, 7pm and 11pm.

    Before taking aciclovir, please read the information leaflet provided with the medication and follow the instructions on the pharmacy label.

    What if I forget to take a dose of Aciclovir?

    If you forget a dose of acyclovir, take it as soon as you remember, unless it is nearly time for your next dose. In this case, just skip the missed dose and continue with your next one as normal.

    You should not take two doses at the same time or take an extra dose to make up for a forgotten one.

    To help remember when to take the tablets, you may find setting an alarm as a helpful reminder.

    Who can take Aciclovir UK tablets?

    Aciclovir antiviral tablets can be taken by most adults and children, however it may not be suitable for some people.

    You should tell your doctor or pharmacist if any of the following apply to you:

    • you have had an allergic reaction to aciclovir or any other medicine in the past
    • you have kidney problems
    • you are over 65 years old
    • you are pregnant, trying to get pregnant or breastfeeding

    When ordering Aciclovir 200mg tablets for cold sores from Post My Meds, we will ask you to complete a short online consultation form to determine whether or not this treatment is safe and suitable for you to use.

    Can I take aciclovir cream to treat cold sores?

    Aciclovir cream, also known as the brand name Zovirax Cold Sore Cream, is available to treat cold sores.

    It is available to buy through our service, and is available to purchase in most pharmacies without the need of a prescription.

    You should wash your hands before and after using the cream and put a thin layer of cream on the cold sore 5 times a day.

    Are there other treatments available for cold sores?

    Some people may find topical antiviral preparations, topical analgesics, mouthwash and lip barrier preparations helpful, and they may be available over-the-counter from your local pharmacy.

    Can I take Aciclovir Pills with other medication?

    Certain medications may affect the way aciclovir treatment works and may also make you more likely to get side effects.

    Therefore it is important to always tell your prescribing doctor or pharmacist if you take any of the following medicines before taking aciclovir:

    • probenecid – which is a medicine for gout
    • cimetidine – which is a medicine for stomach ulcers
    • mycophenolate mofetil – which is a medicine given after organ transplants
    • aminophylline or theophylline – which are medicines used for asthma

    When ordering from PostMyMeds, you will need to complete a free online consultation form before purchasing to ensure it is safe for your use.



    If you need more information about aciclovir, you can read the patient information leaflet, or contact a member of our pharmacist support team for advice.

    For more information and advice about herpes simplex infections, you can also view other sources of information such as:

    The Herpes Viruses Association leaflet about cold sores.

    The British Association of Dermatologists leaflet on Herpes simplex.

    The British Medical Journal leaflet on cold sores.

Although all of our content is written and reviewed by healthcare professionals, it should not be substituted for or used as medical advice. If you have any questions about your health, please speak to your doctor.

Authored Sep 07, 2021 by Joseph Issac, MPharm
Reviewed Jul 07, 2022 by Prabjeet Saundh, MPharm