Cold Sore Tablets Side Effects Help

Experiencing side effects from cold sore medication? You're not alone. While antiviral tablets like aciclovir are generally well-tolerated, some people may experience mild to moderate side effects. Understanding what to expect and how to manage these effects can help you continue treatment safely. Most side effects are temporary and subside as your body adjusts to the medication.

  • Nausea and stomach upset - take tablets with food to reduce irritation
  • Headaches and dizziness - stay hydrated and rest when possible
  • Skin reactions - monitor for rashes and discontinue if severe
  • Fatigue and drowsiness - avoid driving if you feel unusually tired
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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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Managing Aciclovir Side Effects Safely

Common Side Effects of Cold Sore Tablets

Aciclovir tablets, the most commonly prescribed antiviral for cold sores, may cause several side effects. The most frequently reported include nausea, headache, dizziness, and stomach discomfort. These effects typically occur in less than 10% of patients and are usually mild.

Gastrointestinal Side Effects

Nausea and stomach upset are among the most common complaints. Taking aciclovir 400mg tablets with food can significantly reduce these symptoms. If you experience persistent vomiting or severe abdominal pain, contact your healthcare provider promptly.

Neurological Effects

Some patients report headaches, dizziness, or confusion, particularly when taking higher doses. These symptoms are more common in elderly patients or those with kidney problems. Staying well-hydrated and avoiding sudden position changes can help manage dizziness.

Skin and Allergic Reactions

Rarely, patients may develop skin rashes, itching, or sensitivity reactions. While most skin reactions are mild, severe allergic reactions including facial swelling or difficulty breathing require immediate medical attention.

When to Seek Medical Advice

Contact your GP or pharmacist if side effects persist beyond 48 hours, worsen over time, or significantly impact your daily activities. Severe reactions such as confusion, unusual bruising, or signs of kidney problems warrant immediate medical review.

EverydayMeds offers various cold sore treatments including aciclovir tablets and alternative options like valaciclovir, allowing you to discuss the most suitable treatment with healthcare professionals if you experience persistent side effects.

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