Originally Posted By lori
There's a reason each one has a little piece of gum that helps with constipation....

Here is another nugget I stumbled upon that not many people know.

You know the old MRE heater envelope? It was designed to be folded around a meal packet, add water to it, and a chemical reaction generated heat. The main chemical reaction is water and magnesium forming magnesium hydroxide (and hydrogen and heat). Ironically, magnesium hydroxide is the active ingredient in some antacids. So heat your meal and have an antacid waiting for you. I don't know that it's food grade though.