Grow some lemon balm (melissa officianalis) in your garden. It is easy and prolific in a sunny spot. Just before it flowers, cut down about 1/3 of the plant and hang it upside down in a dry, out-of-the-sun place. When it is really dry (crumbles in you hand), crumble the leaves into a bag or dish. Discard the stems (makes good compost.)
Further chop/mince the lemon balm using a food chopper to as small as you can... this should be the consistency of ground spices or as small as you can go. If you can find gelatin capsules, get some and stuff the ground lemon balm into the capsules. You will get 1/2 to 1 teaspoon into a capsule. If you can't find capsules, take a teaspoon in some yogurt - let it soften a bit first.
At the first sign of a herpes outbreak, take one or two capsules 2 or 3 times during the day for a day or two. It will avoid or greatly minimize the outbreak. For an extra boost, take 3 to 4 garlic tablets at the same time. Both lemon balm and garlic seem to stop herpes in its tracks. Lemon balm is most effective. It helps to become attuned to your body so you can detect the subtle signs before they become a problem.