Happy to hear you were able to find a doc (and pharmacy - which sometimes is even more of a problem - who would prescribe what you asked. I also use it prophylactically - and just vary the time period based on how much virus seems to be circulating (although I'll admit that it becoming harder and harder to determine with all the self testing going on). My personal guess is that there are about 2x as many cases as reported. I am currently on the 2-week cycle here.