Hi Mark,
I don't think it's useful to think about what the largest amount is that was taken by some person in one day.
What's important is finding the right amount for you to be taking.
If you take additional lozenges when you get the symptoms, do they reduce or go away?
That is what would interest me... I'd like to know that.
I hope you are keeping notes of your symptoms, day by day, and not trusting it to your memory...
.