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.






