Cold Sore Flare-up

We offer prescription antiviral medications to help treat cold sores, reduce symptoms, and speed up healing.

About Cold Sores

Cold sores are small, fluid-filled blisters that usually appear around the lips. They are caused by the herpes simplex virus and can be triggered by stress, illness, or sun exposure. While they often heal on their own, antiviral medicine can help reduce symptoms and speed up recovery.

Who can we treat?

We can treat people aged 2 years and over who have a previous diagnosis of cold sores and are experiencing a new flare-up.

How can we help?

Our team can assess your symptoms and provide treatment and advice if appropriate.

  • Antiviral medicine to speed healing
  • Self-care and prevention advice
Patient Information - Cold Sores
Looking after cold sores at home
  • Keep the area clean and dry—avoid touching or picking the sore.
  • Wash your hands after applying cream or touching your mouth.
  • Avoid kissing or sharing cups, utensils or towels while blisters are present.
Using your medicine
  • Take your medication as soon as possible after symptoms begin.
  • Finish the full course even if symptoms improve.
  • Side effects are not common but may include nausea or headache.
When to return
  • If blisters don’t heal within 10 days.
  • If you develop severe pain, spreading rash, or eye symptoms.
  • If flare-ups happen frequently—ongoing treatment may help.