Larry Schwartz - Not too long ago, homeopathic formulas were only sold in health food stores. You might have seen them: Little blue vials with tiny little pills in them. You might have thought good things come in small packages. Then homeopathy hit the mainstream, and became available in just about every drugstore. One of its biggest selling points is the lack of side effects, the way it works naturally with your body, how clinically effective it is. The lack of side effects is true enough—because there...