[Hepatotoxicity induced by herbs and medicines used to induce weight loss].

In the last few years, a considerable number of reports have been published on hepatotoxicity associated with herbal products attributed with weight-reducing properties. Clinical expression of hepatotoxicity has ranged from symptoms of self-limiting hepatitis, indistinguishable from those caused by the hepatitis viruses, to forms of fulminant hepatitis causing death or requiring liver transplantation. These products, which are sold as dietary products or supplements, do not undergo the safety tests required of drugs before their release on to the market. To prevent the toxic effects of herbal products, the general public should be made aware of their harmful effects and since the benefits of these products have not been demonstrated avoid their use, while physicians should strongly discourage patients from taking these products. Authorization of the commercialization of all these natural products should be strictly regulated to minimize the harm they can cause.