Article: What's in an antacid?

The opposite of an acid is a base, and that's exactly what antacids are.

But a base all by itself can't neutralize the acid inside you. For reasons that are best explained on a blackboard in chemistry class, a base needs some chemical helpers," or ingredients, to accompany it on its neutralizing mission into your stomach.

All antacids contain at least one of the four primary "helpers" or ingredients: sodium, calcium, magnesium, and aluminum.

Here's a brief rundown of the composition and some potential side effects of various antacids:

Sodium (Alka-seltzer, Bromo Seltzer, and others)

Sodium bicarbonate or baking soda, perhaps ...

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