Aciclovir Side Effects: Complete FAQ Guide

Understanding aciclovir side effects is crucial for safe cold sore treatment. This comprehensive guide covers common and serious side effects of aciclovir tablets and cream, helping you recognise what to expect and when to seek medical advice. Whether you're considering aciclovir for the first time or experiencing symptoms during treatment, this FAQ provides essential information for informed decision-making about your antiviral therapy.

  • Common side effects include nausea, headache, and dizziness with tablets
  • Topical cream may cause mild skin irritation or stinging sensation
  • Serious side effects are rare but require immediate medical attention
  • Most side effects are temporary and resolve when treatment ends
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Choose from a wide range of clinically-proven, safe, and effective treatments for Cold Sore.

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Aciclovir Tablets

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Aciclovir 5% Cream

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Valaciclovir

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Valtrex

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Understanding Aciclovir Side Effects and Safety

Common Side Effects of Aciclovir Tablets

Aciclovir 400mg tablets, available through EverydayMeds, may cause several common side effects that typically affect fewer than 1 in 10 people. The most frequently reported include nausea, vomiting, diarrhoea, and stomach pain. Headaches and dizziness are also relatively common, particularly when starting treatment. These symptoms are generally mild and often improve as your body adjusts to the medication.

Topical Aciclovir Cream Side Effects

Aciclovir 5% cream typically causes fewer systemic side effects than tablets. Local reactions may include temporary stinging, burning, or itching at the application site. Some patients experience mild skin dryness or flaking where the cream is applied. These reactions are usually brief and subside as the cold sore heals. Contact dermatitis is possible but uncommon in sensitive individuals.

Serious Side Effects Requiring Medical Attention

Although rare, serious side effects can occur with aciclovir treatment. Allergic reactions may present as skin rash, difficulty breathing, or swelling of face, lips, tongue, or throat. Kidney problems are uncommon but possible, particularly with high doses or in patients with existing kidney issues. Signs include changes in urination, swelling, or unusual tiredness. Mental health effects such as confusion, hallucinations, or aggressive behaviour require immediate medical evaluation.

Managing and Minimising Side Effects

Taking aciclovir tablets with food can help reduce stomach upset and nausea. Staying well-hydrated supports kidney function and may reduce the risk of kidney-related side effects. For topical applications, ensure hands are clean before and after use. If skin irritation persists or worsens, discontinue use and consult your pharmacist or doctor. EverydayMeds offers both aciclovir tablets and cream options, allowing patients to choose the most suitable treatment approach based on their tolerance and preferences.

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