Is there ? http://www.justicanostrilhos.org/cost-of-trileptal trileptal oxcarbazepine  Mitch Zeller, director of the FDA's Center for Tobacco Products, said in a statement the data are "cause for great concern'' and "reinforce'' the agency's plans to regulate novel tobacco products such as e-cigarettes. He added that the long-term effects of e-cigarettes still aren't understood.