The U.S. Food and Drug Administration is protecting consumer rights in a bold new way–by policing companies’ Facebook pages.Zarbee’s Naturals, a producer of “safe and effective natural [cough] remedies†for children, was sent a warning letter by the FDA for liking comments on its Facebook page implying that its products “are intended for use as drugs.â€Zarbee’s products were designed specifically for children too young for FDA-approved medications and have not been reviewed by the FDA. Happy customers posted their approval on the company’s Facebook page, saying things like “Love ZarbeeÂ’s this is the only medicine we use for our 2...