Some medicines can help you get rid of cold sores faster. They can relieve pain and discomfort. The medicines are acyclovir (Zovirax), famciclovir (Famvir) and valacyclovir (Valtrex). They won’t get rid of the virus. You will have to take them when ever you feel a cold sore starting. By the time you have blisters on your lip, they will not be very much help.
The drugs are able to stop cold sores from showing up in the first place. A good time to take them is when you know you will be under stress.
Make sure the area stays clean and apply lip balm. Don’t touch the area. Don’t kissing anyone when you have blisters and sores.