Description

Aciclovir Tablets (400mg): Uses, Dosage, Side Effects & UK Information

What Is Aciclovir?

Aciclovir is an antiviral medicine used to treat infections caused by the herpes virus. Aciclovir tablets are commonly prescribed for:

• Genital herpes

• Shingles

• Severe chickenpox

Aciclovir is also available as a cream, which is used directly on cold sores.
In some cases, people with a weakened immune system take aciclovir daily to help prevent recurring herpes infections.

Always read the patient information leaflet for full details on side effects and precautions.

How Does Aciclovir Work?

The herpes virus causes painful blisters on the skin, lips, or genitals.

Aciclovir works by stopping the virus from multiplying in the body. This helps:

• Reduce pain

• Speed up healing

• Prevent symptoms from getting worse

Aciclovir does not remove the virus completely. The virus can remain inactive in the body and may return later. This is why cold sores and genital herpes can recur.

Avoid close contact when blisters are present, as the virus can still be passed on.

How to Take Aciclovir Tablets

Aciclovir is available as:

• Tablets

• Liquid (for those who have difficulty swallowing)

• Dispersible tablets

Tablets should be swallowed with water and can be taken with or without food.

Aciclovir cream is used externally for cold sores on the lips only.

Aciclovir Dosage (UK Guidance)

Aciclovir tablets are available in the following strengths:

• 200mg

• 400mg

• 800mg

Your dose depends on the condition being treated.

Typical dosing may include:

• Genital herpes: 400mg, 3 times daily for 5 days or longer

• Shingles or adult chickenpox: 800mg, 5 times daily for 7 days

Your prescriber will decide the correct dose based on your symptoms and medical history.

Aciclovir Side Effects

Most people tolerate aciclovir well. If side effects occur, they are usually mild and short-lived.

Common side effects include:

• Headache

• Nausea or vomiting

• Dizziness

• Diarrhoea

• Increased sensitivity to sunlight

Aciclovir cream may cause mild burning, stinging, dryness, or itching at the application site.

 Seek urgent medical help if you develop signs of a severe allergic reaction, such as:

• Difficulty breathing

• Swelling of the lips, tongue, or face

Warnings and Precautions

Tell your prescriber if you:

• Are 65 years or older

• Have kidney problems

• Are pregnant, trying to conceive, or breastfeeding

• Have had an allergic reaction to medicines in the past

Aciclovir may not be suitable for everyone.

Your healthcare provider should also review any other medicines, supplements, or herbal remedies you are taking to avoid interactions.

Buying Aciclovir Online in the UK

Aciclovir is a prescription-only medicine in the UK.
When ordered online through a UK-registered pharmacy, you will need to complete a medical assessment so a qualified prescriber can determine if the treatment is suitable.

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