Common Side Effects and Management Strategies
Most Common Side Effects (Affecting 1-10% of Users)
The most frequently reported side effects with aciclovir tablets include nausea, headache, dizziness, and stomach upset. These symptoms are typically mild and often improve as your body adjusts to the medication. Taking aciclovir with food or milk can help reduce nausea and stomach discomfort. Stay well-hydrated throughout your treatment course, as this may help minimise headaches and support your body's healing process.
Less Common but Notable Reactions
Some users may experience fatigue, skin rash, or diarrhoea whilst taking aciclovir. Hair loss has been reported rarely with prolonged use, though this typically reverses after stopping treatment. If you develop a widespread rash, itching, or any breathing difficulties, discontinue use and seek immediate medical advice, as these could indicate an allergic reaction.
Managing Side Effects Effectively
To minimise potential side effects, take aciclovir exactly as prescribed and complete the full course even if symptoms improve. Avoid alcohol during treatment as this may worsen nausea or dizziness. If side effects persist or become troublesome, consult your pharmacist before stopping treatment. They can advise whether adjusting the timing of doses or taking with food might help.
When to Seek Medical Advice
Contact your GP or pharmacist if you experience severe or persistent side effects, signs of kidney problems (changes in urination, swelling), or neurological symptoms like confusion or tremors. EverydayMeds offers various cold sore treatments including aciclovir tablets and alternative options like valaciclovir, allowing healthcare providers to find the most suitable treatment for your needs.






