One time traveling, a nice thing happened in regards to Chinese herbs. I met other travelers along the way and all of us were trying to avoid local drinking water since our bodies weren’t used to it and we certainly didn’t want the experience of diarrhea, abdominal spasms, and pain.
Over lunch one day, it came up in a conversation and most the travelers were saying they had at least a bit of diarrhea or abdominal discomfort. We had been eating together for a few days and it was asked why nearly all at the table had symptoms but I did not. They asked if I was taking something. I was. A single Chinese herb taken at a prophylactic dose of one small tablet daily.
I’m not sure if that’s why I didn’t share their symptoms, but I thought it might be.