For the last couple of months, I have been getting a fever blister. After it goes away, another one will pop within a week or two. The last one I had lasted about a good 3 weeks. It was finally gone last week and BOOM, I wake up this morning and have another one in a different spot. I never had them until I was grown and had kids. I have a child that is very prone to them, so I am guessing we're probably harboring the virus and keep passing it back and forth. I have been to the doctor and was given Valtrex to use. The doctor thought that since this is used in the treatment of Herpes that this would help eliminate flare ups within the bloodstream. And I was given Abreva to take topically. Well, that did no good. The valtrex made me very sick, but I took the full course anyway. I have used the abreva in the past and at best, I would say it minimizes the pain somewhat, but that is about it. I have googled and see that there is a variety of things to try ranging from Lysine to other homeopathic items. I am willing to try anything that has been tried and true. So, I guess I am asking for a personal experience from some trusted folks here

Here's my questions:
What do you take/use for treatment of a fever blister that has already popped up?
What do you take/use for PREVENTION of fever blisters, i.e. vitamins, homeopathic, etc?
Please tell me your secret, no matter how far fetched you think it is. I can't deal with this anymore and am willing to try just about anything that will work.
***Wanted to add that I know when I get run down and/or stressing that is when I am most susctible (sp) to getting the fever blister. Example, in the last weeks, I have worked 14 days straight and yesterday was my first day off. I felt terrible, my face, neck, and shoulders hurt all day. No other signs of a fever blister coming. Then, I wake up and it's popped up in full force. In addition to working, my mother had major surgery Wed., my husband is very ill, money problems, my daugher broke her eye glasses, my son broke his a day later, my car broke down two different times this week, and of course the normal daily things like laundry, cooking, cleaning, etc. So, needless to say, I was a bit run down this week.