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Aciclovir Tablets 400mg

Aciclovir Tablets 400mg

Pack Size: 15 Tablets
RRP: £22.99
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Our Price: £19.99
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Age: 18

The dose for Aciclovir tablets is 1 tablets three times a day for 5 days.

The dose for valciclovir tablets is 1 tablets twice a day for 5 days.

Swallow the tablets with water, with or without food. If you experience difficulty in swallowing the tablets they may be dispersed in a glass of water (at least 50ml) which should be stirred before drinking.

The two drugs are very similar. After you take Valaciclovir, your body converts it into aciclovir. It has the same effect, but you don’t need to remember to take valaciclovir as frequently as aciclovir.

It is best to start treatment with aciclovir or valciclovir as soon as you know an attack is starting or as soon as you get signs and symptoms of the infection.

Aciclovir and Valaciclovir start working straight away to reduce the severity and duration of an outbreak by one to two days.

If taken within five days of the start of an outbreak should shorten your outbreak by one to two days and make the symptoms less severe. It might even prevent the outbreak if taken early enough.

If you take too many Aciclovir tablets, contact your doctor immediately. Signs of an overdose include effects on the stomach and intestines such as feeling or being sick and effects on the nervous system such as confusion.

Do not take a double dose to make up for a forgotten dose. If you forget to take a dose, take it as soon as you remember it and then take the next dose at the right time. 

Common side effects include:

  • headache
  • nausea
  • diarrhea
  • fatigue
  • abdominal pain

Common (occurs in less than 1 in 10 users): dizziness, headache, feeling or being sick, diarrhoea, stomach pain, skin rashes, itching, tiredness, sensitivity to sunlight or artificial light (e.g. sunbeds), fever. 


  1. Do not take Aciclovir tablets
    • if you areallergic(hypersensitive)toaciclovir, any of the

    ingredients in Aciclovir tablets or valaciclovir (see section 6).

    Take special care with Aciclovir tablets
    • if you havenervous system abnormalities,pleasetell

    your doctor before you start treatment with Aciclovir


    • toavoiddehydration,itisimportanttodrinkplentyof

      water whilst taking Aciclovir tablets, especially if you are

      elderly or taking doses of 4g a day or higher.

    • kidney problems

      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. Especially:
      • cimetidine(usedtotreatpepticulcers)andprobenecid

      (used to treat gout), as these increase the concentration of aciclovir.

      Continued top of next column

      AAAE4539 50697504

This medicine has been prescribed for you. Do not pass it on to others. It may harm them, even if their symptoms are the same as yours.

  • mycophenolatemofetil(medicineusedintransplant patients). Care should be taken if you are taking high doses of Aciclovir, as blood levels of both drugs may increase.

  • ciclosporin(animmunosuppressantdrug).Your doctor may monitor your kidney function.

  • theophylline(used in asthma and other breathing problems).

  • zidovudine(used in HIV infection).

    Pregnancy and breast-feeding

    There is limited information on the use of Aciclovir tablets in pregnancy or breast-feeding. Ask your doctor or pharmacist for advice before taking this medicine.

    Driving and using machines

    Some side effects such as drowsiness and sleepiness may impair your ability to concentrate and react. Make sure you are not affected before you drive or operate machinery.

    Sugar intolerance (200mg tablets only)
    If you have been told you have an intolerance to some sugars, contact your doctor before taking this medicine, as it contains a type of sugar called lactose. 

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All our orders are sent out using Royal Mail. Tracking is available on all orders. We always aim to dispatch all orders within 24 hours of them being received, if we are unable to meet this high standard for whatever reason we will always contact you to advise you of the delay.

We offer free UK standard delivery on orders over £40.

The following delivery options are available:

  • Standard Delivery - 2/3 day delivery - £2.95
  • Express Delivery - 1/2 day delivery - £4.45
  • Special Delivery (Guaranteed before 1pm) - £8.95
  • Saturday Guaranteed before 1pm - £10.45

The cut-off for same day dispatch of orders is 4pm. Orders processed after this time will be dispatched the following working day. Orders are dispatched Monday - Friday. Orders will not be processed on weekends or bank holidays.

We ensure all deliveries are in plain packaging for discreet delivery of your medicines and pharmacy goods.

Deliveries containing pharmacy-only or prescription medicines may require a signature on receipt. 

Delivery is free for all NHS prescriptions.

Please note: Royal Mail do not deliver on Sundays or Bank Holidays - this should be taken into account when ordering. 


We are currently unable to ship orders outside of the UK.

The Independent Pharmacy is an online pharmacy and online doctor service is owned and operated by ABSM 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. © 2014 ABSM Healthcare Ltd. All rights reserved.
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