How Long Does Cold Sore Treatment Take to Work?

Getting cold sore treatment at the right time can significantly reduce outbreak duration and severity. Early intervention with antiviral medications like aciclovir is most effective when started within 72 hours of symptom onset. Understanding the optimal treatment timing helps you manage cold sore outbreaks more effectively and may reduce healing time from 7-10 days to 4-6 days when treatment begins early.

  • Start treatment at first tingling or prodromal symptoms
  • Aciclovir tablets work best within 72 hours of onset
  • Topical treatments can be applied up to 5 times daily
  • Complete the full course even if symptoms improve
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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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Cold Sore Treatment Timeline and Effectiveness

Recognising Early Cold Sore Symptoms

The most effective treatment window begins during the prodromal phase, when you first notice tingling, burning, or itching sensations around the lips. This typically occurs 6-24 hours before visible blisters appear. Starting antiviral treatment during this critical period may prevent blister formation entirely or significantly reduce outbreak severity.

Aciclovir Treatment Options

Aciclovir 400mg tablets represent the gold standard for cold sore treatment, typically taken five times daily for five days. This oral formulation provides systemic antiviral coverage and is particularly effective for frequent sufferers or severe outbreaks. For localised treatment, aciclovir 5% cream can be applied every four hours during waking hours, starting as soon as symptoms appear.

Treatment Effectiveness Timeline

When started within 24 hours of symptom onset, aciclovir treatment may reduce healing time by 1-2 days and decrease pain intensity. Treatment initiated within 72 hours still provides benefits, though effectiveness diminishes with delayed start times. Most patients notice symptom improvement within 2-3 days of starting treatment, with complete resolution typically occurring within 4-7 days.

Available Treatment Options

EverydayMeds offers comprehensive cold sore management solutions, including aciclovir tablets for systemic treatment and topical formulations for localised application. Alternative options include valaciclovir tablets, which require less frequent dosing due to improved bioavailability. For patients experiencing frequent outbreaks, suppressive therapy may be considered under medical supervision.

How it
Works?

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Once you complete a short online assessment, you’ll be able to choose your preferred treatment and quantity from a list of safe, medically approved options tailored to you.

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Frequently asked questions