Can't get any other way?????? You can get viagra and Lortab and all sorts of incredibly controlled drugs on the 'net, and you can't find a way to get antibiotics? Of course, you may need to have the drug tested as to its potency and purity, but hey, amoxicillin is amoxicillin, right? Sand, snot, whatever else they put in it, who cares? You're just *ingesting the drug*, no biggie.

Since you are not looking to save a buck, just go to your primary care physician, pay him the copay for seeing him, and ask him straight up: "How does one obtain a prescription of a broad spectrum antibiotic for life-threatening emergencies for my expedition to _____________?" Many physicians have samples that they give away for free. But since you're not trying to save a buck, be sure to refuse the free sample and insist on a prescription that you can fill at your local pharmacy. If you're not going out of the country (to the third world), it will probably be more difficult to convince the prescriber that you will be in a position where you have to save your own life one day by taking a course of antibiotics. It would be up to you to convince him/her. Are you undertaking very long expeditions to summit peaks? Visiting third world countries? If it's just to add to your first-aid kit and you are not involved in serious pursuits like the above, the prescriber may not say "yes."

BTW, Just how much training do you have in self-diagnosing your infection? Or were you going to wing it and take it just as a precaution?

Are you aware that M.D.'s, with all their expertise and access to advanced labs, etc. sometimes have to try another antibiotic because the first one failed? That should give you pause to think.