If you travel much in areas where the water is questionable, no matter how careful you are sooner or later you’re likely to pick up a case of amoebas. Doctors will treat this with something like flagyl, which I find a nasty business — and one that’s often distressingly ineffective.
I’m not a doctor so I can’t offer medical advice. In fact, the best advice I can give is to find a medical caregiver you trust and consult with that person. So when I tell you what I do, I’m not suggesting you do the same.
What I do is make infusions of wormwood tea, a few cups a day if necessary. Wormwood — Artemesia absinthium — is known for its use in absinthe. You can grow the plant or buy the dried leaves at health food stores. A strong wormwood tea is a kind of poison. In my experience it’s one that seems to control amoebas, without the side effects of prescription medicines.
One caution: wormwood is said to be the second most bitter substance there is (after vetch, I think). If you drink this stuff, you might want to swallow it fast (and then do the wormwood full-body shudder — perfect for dia de muertos).
amoeba image from wikipedia