Cold Sore Treatment

Safe, Effective Treatment

Cold sores are caused by a virus called the herpes simplex virus (HSV). This virus is very common and it’s estimated to affect approximately 67% of the world’s population. The virus is caught by coming into contact with other people with an active infection. This is often during childhood when children come into close contact through activities such as play.

For most of your life, the virus will lie dormant in your skin, suppressed by your immune system. Occasionally the virus will reactivate causing a cold sore. This is often when your immune system is temporarily weakened, for example through stress or illness.

Cold Sore Treatment Options

MedExpress offers two anti-viral treatments: aciclovir and valaciclovir. The two medicines are all comparable in their effectiveness. Aciclovir is more cost-effective but needs to be take more frequently than valaciclovir.

Comparing Cold Sore Medications

Aciclovir Valaciclovir
Brand Names Zovirax Valtrex
Strengths 400mg 500mg
Dosage Three times a day for one day Four tablets two times a day for five days
Cost £29.99/45 tablets £39.99/24 tablets