I got lyme disease in 07 waited about 3 months till going to doctors with headaches. had to take pill 21 days waited about a month and a half, took another blood test and still was to high, three times I did this and still was over 190 I think. after about three years, I either got bite again or it just came back but the headaches were back, so I did the 21 days again, every year about aug, which was the month I found the bullseye in 07, I get headaches, neck shoulder back and arms at least once a year. when I do if I take the 21 days pill thing the pain gets better in about a week, If I don't do the 21 days right away, the pain gets worst till I do the pills. how many times a year can you take the 21 day routine ( amoxicillin 500 mg cap sand)