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.
MedExpress offers numerous treatment options for cold sores. Select your treatment,
complete a short online consultation and get your medication delivered straight to your door, if prescribed.
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.