Aciclovir 400mg Dosage and Administration Guide
Standard Dosing Instructions
For cold sore treatment, the typical aciclovir 400mg dosage is one tablet taken three times daily for five days. The tablets should be taken at approximately 8-hour intervals to maintain consistent antiviral levels in your system. Early treatment initiation is crucial - begin taking aciclovir as soon as you notice the first tingling, burning, or itching sensation that typically precedes cold sore development.
How to Take Your Tablets
Swallow aciclovir 400mg tablets whole with a full glass of water. The tablets can be taken with or without food, though taking them with meals may help reduce any potential stomach upset. Never crush, chew, or break the tablets as this can affect how the medication is absorbed. If you have difficulty swallowing tablets, speak with your pharmacist about alternative formulations such as dispersible tablets or liquid preparations.
Timing and Treatment Duration
The effectiveness of aciclovir depends significantly on treatment timing. For maximum benefit, start your course within 24 hours of symptom onset, ideally at the first sign of tingling. The standard treatment course is five days, and it's essential to complete the full course even if your symptoms improve earlier. Stopping treatment prematurely may allow the virus to continue replicating, potentially prolonging your outbreak.
Important Safety Considerations
Stay well-hydrated whilst taking aciclovir tablets by drinking plenty of fluids throughout the day. This helps prevent potential kidney-related side effects and ensures proper medication elimination. If you miss a dose, take it as soon as you remember, but if it's nearly time for your next dose, skip the missed dose and continue with your regular schedule. Never double up on doses to make up for a missed tablet.
When to Seek Medical Advice
Contact your healthcare provider if your symptoms worsen or don't improve after completing the full five-day course. Seek immediate medical attention if you experience signs of an allergic reaction, such as rash, swelling, or difficulty breathing. EverydayMeds offers various antiviral treatment options, and our pharmacists can provide guidance on the most suitable approach for your specific needs whilst ensuring safe and effective treatment outcomes.






