Has anyone used Viroxyn for fever blisters and cold sores?

I read that you can get this treatment from your dentist. It's supposed to speed healing. Has anyone tried it? Does it work?
Update: I have tried every over the counter medicine such as abreva, herpecin..pretty much every over the counter medicine. I do like abreve, but I've been reading about this new medicine from the dentist. Has anyone tried Viroxyn?
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