Do you have significant hypothyroidism? If not, I would not worry about the dose of Prunella found in Herp Eeze.
My wife is mildly hypothyroid and actually improved on these herbals. Why not try it and see how you feel after a week or two? I think you might be surprised.
If you are hypothyroid you may try Lugol's or Iodine tablets.
If that herbal recommendation does not work for you, you might look into red marine algae to help heal your viral infections. If you go that route, I suggest you include lysine in your daily routine (esp. if you have hsv-1).