You know the signs, that tell-tale little tingling sensation that signals you're in for a real treat, a cold sore is on the way. Zovirax and Abreva are widely used as a first line of defence and can be successful at keeping cold sores at bay, but need to be applied at the tingling stage. Not so useful if they appear in the morning as most of mine do. When you wake at night to … [Read more...]