If I don't take 1000mg of lysine per day (and sometimes even if I do), cold sores pop up and I'm stuck with the various creams or gels to treat them. I decided to try the Virulite because my favorite gel went off the market and I'm tired of taking so much lysine daily. So I stopped taking the lysine and sure enough - the tingling started. I used the Virulite and the next morning, no cold sore. Later that day, the tingling started again. So I used the virulite and again, no cold sore developed. I'm absolutely amazed! I hoped the product would work, but I never expected such impressive results. I'm completely off my lysine and have no cold sores. I wish I'd found this product years ago!
EDIT: Recently I had a cold with a high fever, which is usually a guaranteed cold sore. I felt the itch and noticed a bump on my lip, so I used the virulite. The itch and the bump went away almost immediately. No true cold sore developed. This happened twice over the duration of my cold. Before, I'd be treating the fever blisters/cold sores with gels or creams for over a week, but virulite took care of the problem right away. I absolutely love this product. I'd recommend it to anyone.
April 2012: Have had my virulite since August 2011. At this point, I no longer get fever blisters. I get the little tingle and maybe 1 small red dot on occasion, but no other issues. So the virulite has done its job! My lips heal themselves before a fever blister can develop!