A product like Zicam, which claims it can make colds shorter, shields itself from truth in advertising claims by admitting on the label its product is not actual medicine, it is homeopathy, a pretend drug for people who want to believe.If they were required to show it works, the way pharmaceutical products must, they'd be out of business. If they could pass a double-blind clinical trial, or any homeopathic product could, they'd spend the money in a second, because every supplement that wants to be legitimized yearns for U.S. Food and Drug Administration legitimacy. FDA may have flaws, like all groups do, but it is the gold standard for the world.