An official Web-site of America authorities. Here's how you know we are official. dot gov icon There are already no stories of accidental or intentional overdosage with ursodiol. Solitary oral doses of ursodiol at 10 g/kg in mice and canine, and five g/kg in rats were not lethal. Other https://www.youtube.com/watch?v=A07qHOeWON8