Managing Treatment Side Effects During Illness
Why Cold Sores Appear During Common Colds
When you have a common cold, your immune system is working overtime to fight the viral infection. This temporary weakening of immune defences can trigger dormant herpes simplex virus to reactivate, leading to cold sore outbreaks. Research suggests that up to 25% of cold sore sufferers experience outbreaks during or shortly after other viral illnesses.
Common Side Effects When Taking Aciclovir During a Cold
EverydayMeds offers aciclovir 400mg tablets and aciclovir cream for cold sore treatment. When taken during a common cold, you may experience overlapping symptoms that can make it difficult to distinguish between cold symptoms and medication side effects. Common aciclovir side effects include headache, nausea, and dizziness - symptoms that may also occur with common colds.
Headaches are reported by approximately 2% of aciclovir users and can be more noticeable when you're already feeling unwell from a cold. If you experience severe headaches whilst taking aciclovir during a cold, it's important to stay hydrated and consider whether the headache is related to your cold symptoms or the medication.
Digestive Side Effects and Appetite Changes
Nausea and stomach upset can occur with aciclovir treatment, particularly when taking tablets on an empty stomach. During a cold, you may already have reduced appetite or digestive discomfort, which can be exacerbated by antiviral medication. Taking aciclovir tablets with food can help minimise these effects.
Potential Medication Interactions
Some over-the-counter cold remedies may interact with prescription antiviral treatments. Paracetamol and ibuprofen are generally safe to use alongside aciclovir, but it's advisable to space doses appropriately. Decongestants containing pseudoephedrine should be used cautiously, as they may increase the risk of side effects like dizziness or headaches.
Alternative Treatment Options Available
EverydayMeds also stocks valaciclovir tablets and topical aciclovir cream, which may be more suitable for some patients experiencing side effects with standard aciclovir tablets. Topical treatments typically cause fewer systemic side effects and may be preferable when you're already unwell with a cold.
When to Seek Medical Advice
Contact your healthcare provider if you experience severe or persistent side effects, including severe headache, confusion, or signs of allergic reaction such as skin rash or difficulty breathing. If your cold sore outbreak is particularly severe or if you have a compromised immune system, you may require adjusted treatment approaches.






