There are a lot of things hinging on this idea that homeopathic remedies don't contain any active ingredients in them. One: When manufactured cleanly and correctly, homeopathic remedies should be generally harmless. After all, in the end, they should just be solutions of water and/or alcohol, perhaps mixed into a sugar pill. Two: In part because homeopathic products have been generally recognized as safe, the U.S. Food and Drug Administration has mostly chosen not to regulate them. Unless they claim to cure serious conditions, such as cancer, the FDA doesn't ask homeopathy companies to prove their products are safe or effective.