Treatment Options for Each Cold Sore Stage
Stage 1: Tingling Phase (Days 1-2)
The first stage begins with a tingling, burning, or itching sensation around the lip area. This prodrome phase is crucial for treatment timing. Starting antiviral medication like aciclovir 400mg tablets during this stage can prevent blister formation or significantly reduce outbreak severity. Topical treatments such as aciclovir 5% cream may also provide relief when applied at first symptoms.
Stage 2: Blister Formation (Days 2-4)
Small, fluid-filled blisters appear on or around the lips. The affected area may appear red and swollen. During this stage, prescription antivirals remain effective, though less so than when started during the tingling phase. Oral treatments like aciclovir tablets work systemically, whilst topical preparations target the affected area directly. Valaciclovir 500mg tablets offer an alternative with less frequent dosing requirements.
Stage 3: Weeping Stage (Days 4-5)
Blisters burst and release clear fluid containing high concentrations of the herpes virus. This represents the most contagious phase. Treatment focuses on symptom management and preventing secondary bacterial infection. Continuing antiviral therapy helps reduce viral shedding duration. Maintaining good hygiene and avoiding touching the affected area prevents spread to other body parts or individuals.
Stage 4: Crusting Phase (Days 5-8)
A yellow or brown crust forms as the open sores begin healing. Though less contagious than the weeping stage, transmission remains possible until complete healing occurs. Antiviral medications continue supporting the healing process. Avoiding picking at scabs prevents scarring and secondary infection. Gentle moisturisation helps prevent excessive drying and cracking.
Stage 5: Healing Phase (Days 8-10)
The scab naturally falls away, revealing new, healthy skin underneath. Complete healing typically occurs within 7-10 days from symptom onset. Some individuals may experience mild redness or sensitivity as skin regenerates. Treatment at this stage focuses on skin recovery and outbreak prevention strategies.
Available Treatment Options
EverydayMeds offers several NHS-approved treatments for cold sores. Prescription options include aciclovir tablets in various strengths, alongside branded alternatives like Valtrex. Both oral and topical formulations are available, allowing treatment customisation based on outbreak severity and individual preference. Consultation with healthcare professionals ensures appropriate treatment selection and dosing guidance.






