Thanks I will try that. I had to take 4 a day. 2 twice daily for 12 hours.
it's 2gms twice a day for 1 day for the cold sore dose. if you have 500mg pills, you take 4 of them at a time.
meanwhile try steeping a tea bag and when it's luke warm, hold it on the cold sore area too several times a day. also ice to the area is also helpful at making it look less red if you weren't successful in preventing a full blown recurrence.
grace