Cold Sores
"To posters not getting relief - the manufacturer&#039;s recommended dosage for cold sore outbreak is TWO grams every 12 hours for 1 day.  If you are not taking this dose that would be the reason it does not work for you.  Some will heal with less but I suggest that your first time taking it, you take as is FDA suggested.

For me at least (50 years of cold sores), if the sore is already in progress then TWO grams at least for the first dose is absolutely necessary.  I then judge later at the 12 hour mark whether it is already responding and may only take 1 gram.  

If I catch it at first tingle then I get by with a single gram every 6 hours for 3 doses only.  Personally I have learned to try and catch  it early because 2 grams gives me a headache."