dhuey

There are so many products that claim to help your immune system while travelling, but I doubt much of it is of any use. My sense is that you should do your best to get sleep, stay hydrated, eat right and disinfect your hands more than you usually would. I'm on the other side of the spectrum of germaphobes normally, but when you travel, you're particularly vulnerable to infection.

I once read some advice from a microbiologist about having something really acidic, such as orange juice, with each meal when you travel to developing countries. The idea is that such acids in your stomach make it difficult for irritating, local bacteria to multiply and cause you discomfort. I don't know if that really works, but it sounds plausible.