★★★★★
My best remedy for cold sore (and I suffer from that since my early age 1) I found around 6 to 7 years ago by coincidence: blue green algae. I used to take every day just 1g and observed during this time no cold sore outbreaks, and useally I had it every month at least once and very bad around my mouth and lips. Now I just take it when I feel this burning on my lips and take 1g to 2g and mostly it prevents me from outbreak. And when I already got cold sore and took blue green algae then - it helped to heal so much faster and the pain was nearly gone. Zovirax never helped me.