[paulmd]

I realize this is a fucking gross idea that amounts to poop pills, but there is probably a market for a market for digestive inoculations against local bacteria. Being able to build up a resistance to the local gut bacteria in advance - before you have to commit 100% to all of the local fauna - would be invaluable. Gut bacteria almost certainly play a large part in that balance.

[Tsagadai]

They exist. Cost me $15 at a local chemist (in Australia) to get an immunization for common stomach bugs in Southeast Asia/India). It also isn't impossible to buy antibiotics before you go and to take them with you.