Managing Cold Sore Treatment Side Effects

Cold sore tablets like aciclovir can effectively treat outbreaks, but some people may experience side effects. Understanding how to manage these effects helps you get the most from your treatment while minimising discomfort. Most side effects are mild and temporary, but knowing what to expect and when to seek advice is important for safe, effective treatment of cold sore symptoms.

  • Take tablets with food to reduce stomach upset and nausea
  • Drink plenty of water to prevent headaches and support kidney function
  • Monitor for allergic reactions like skin rash or breathing difficulties
  • Contact your pharmacist if side effects persist or worsen during treatment
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Available Treatments

Choose from a wide range of clinically-proven, safe, and effective treatments for Cold Sore.

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Aciclovir Tablets

From £12.99

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Aciclovir 5% Cream

From £8.99

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Valaciclovir

From £18.99

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Valtrex

From £34.99

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Common Side Effects and Quick Management Tips

Understanding Aciclovir Side Effects

Aciclovir tablets, the most commonly prescribed treatment for cold sores, are generally well-tolerated. However, some people may experience side effects, particularly when starting treatment. Common effects include nausea, headaches, dizziness, and stomach discomfort. These typically occur within the first few doses and often improve as your body adjusts to the medication.

Immediate Relief Strategies

For nausea and stomach upset, take your aciclovir tablets with food or milk. This simple step significantly reduces gastric irritation. If you experience headaches, ensure adequate hydration by drinking at least 8 glasses of water daily. Aciclovir can occasionally affect kidney function, so maintaining good fluid intake is essential. Paracetamol may help manage headaches, but avoid taking additional medications without consulting your pharmacist first.

When to Seek Professional Advice

While most side effects are manageable, certain symptoms require immediate attention. Contact EverydayMeds or your healthcare provider if you develop severe skin reactions, difficulty breathing, unusual bruising, or persistent vomiting. These may indicate an allergic reaction or more serious adverse effect requiring medical assessment.

Treatment Options Available

EverydayMeds offers several cold sore treatments including aciclovir 400mg tablets and valaciclovir 500mg tablets. If you experience troublesome side effects with one medication, alternatives may be more suitable. Our pharmacists can advise on switching treatments or adjusting dosages to minimise side effects while maintaining effectiveness against cold sore outbreaks.

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