In the 1990s, scientists again documented simarouba's ability to kill the most common dysentery-causing organism, entamoeba histolytica,5 as well as two diarrhea-causing bacteria, Salmonella and Shigella.6 Scientists first looked at simarouba's antimalarial properties in 1947, when they determined a water extract of the bark (as well as the root) demonstrated strong activity against malaria in chickens.7 This study showed that doses of only 1 mg of bark extract per kg of body weight exhibited strong antimalarial activity."
- Leslie Taylor, ND, The Healing Power of Rainforest Herbs: A Guide to Understanding and Using Herbal Medicinals