Originally Posted by YCTTSFM

How long is your trip? Can you just buy intermediate-sized, sealed bottles of your supplements?

If not, fill the space in bigger bottles with stuff you'll use: clean underwear, first aid supplies, sock liners, wet wipes, glasses cleaners, clothespins, safety pins, etc. In some remote areas, those big empty waterproof, bugproof bottles will be useful to your hosts when you leave.

I've traveled in Africa and Central Asia with the type of supplements you mention in opened bottles and/or daily dose containers (only three or four kinds, not nearly as many as polonius.) Kept a few extra for customs to test (fish oil is pretty convincingly fish oil), learned the local word for "vitamins" or "medicine," but never had a problem. Central America may differ.

Happy travels!