How Long Do Cold Sores Last? Complete Guide

Cold sores typically last 7-10 days, progressing through five distinct stages from initial tingling to complete healing. Understanding the outbreak timeline can help you manage symptoms more effectively and reduce transmission risk. Early treatment with antiviral medications like aciclovir may help shorten duration and severity. Most people experience 1-2 outbreaks per year, though frequency varies significantly between individuals.

  • Days 1-2: Tingling and burning sensation begins
  • Days 2-4: Fluid-filled blisters develop and enlarge
  • Days 4-5: Blisters burst and weep (most contagious stage)
  • Days 5-10: Crusting forms and gradually heals completely
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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 Stages and Treatment Timeline

Understanding the Five Stages of Cold Sore Outbreaks

Cold sores follow a predictable pattern, with each stage lasting approximately 1-3 days. The prodromal stage begins with tingling, itching, or burning sensations around the lip area. This is when antiviral treatment like aciclovir tablets may be most effective if started within 24 hours of symptom onset.

When Cold Sores Are Most Contagious

The weeping stage, typically days 4-5, represents the peak contagious period when viral shedding is highest. During this time, avoiding close contact and maintaining strict hygiene becomes crucial. The herpes simplex virus can survive on surfaces for several hours, making hand washing essential after touching affected areas.

Factors That May Affect Healing Time

Several factors can influence how long cold sores persist. Stress, illness, sun exposure, and compromised immune function may extend outbreak duration. Some individuals experience longer healing times during their first outbreak, which can last up to three weeks. Recurrent episodes are typically shorter and less severe.

Treatment Options Available Through EverydayMeds

Prescription antiviral medications like aciclovir 400mg tablets or valaciclovir 500mg tablets may help reduce outbreak duration when taken early. Topical treatments such as aciclovir 5% cream can also provide localised relief. EverydayMeds offers both oral and topical antiviral options through our online pharmacy service, following appropriate consultation.

Managing Symptoms During Outbreaks

Pain relief may be achieved through over-the-counter analgesics like paracetamol or ibuprofen. Avoiding acidic or spicy foods can prevent additional irritation. Cool compresses applied for 10-15 minutes several times daily may provide comfort during the blister stage. Keeping the area clean and dry supports natural healing processes.

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