Many herbs display toxicity on ingestion. Is any scientific data available on toxicity studies of these plants.Minerals like arsenic,lead are found as common toxic elements in plants.Any information on these would be helpful
Lewis S. Nelson ; Richard D. Shih ; Michael J. Balick ; Andrew Weil. 2007. Handbook of Poisonous and Injurious Plants . Springer Science & Business Media, L.R. Goldfrank (Foreword) 340 pages. ISBN-10: 0387312684 ISBN-13: 978-0387312682