day leveled by lebron james. ahead we'll get an update on her condition and also the king's reaction. right when you feel a cold sore, abreva can heal it in as few as two and a half days when used at the first sign. without it the virus spreads from cell to cell. only abreva penetrates deep and starts to work immediately to block the virus and protect healthy cells. you could heal your cold sore, fast, as fast as two and a half days