In my long, miserable experience with cold sores, I have tried toothpaste, ice, methylated spirits (Please DON'T do this. Terrible scars) Whiskey.... I don't know, just about everything mentioned in this forum.
and after a 40 year history I found this natural product called VIRASOOTHE Made in new zealand, and it's just amazing. All natural. I have never had another cold sore since I first used this amazing product. Google Virasoothe cold sores. Lots of good feedback on this product and they have been around a long time, so they must be doing something right