The U.S. Food and Drug Administration issued warning letters to five electronic cigarette distributors for various violations of the Federal Food, Drug, and Cosmetic Act (FDCA) including unsubstantiated claims and poor manufacturing practices. Also today, in a letter to the Electronic Cigarette Association, FDA said the agency intends to regulate electronic cigarette and related products in a manner consistent with its mission of protecting the public health. The letter outlines the regulatory pathway for marketing drug products in compliance with the FDCA... 

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