For military veterans, many of the deepest wounds of war are invisible: Traumatic brain injuries resulting from head trauma or blast explosions. Now, researchers have discovered that the plant-based psychoactive drug ibogaine, when combined with magnesium to protect the heart, safely and effectively reduces PTSD, anxiety and depression and improves functioning in veterans with TBI. Ibogaine is found in the roots of the African shrub iboga. Since 1970, ibogaine has been designated as a Schedule I drug, preventing its use within the U.S. Before the treatment, researchers gauged the participants' levels of PTSD. Participants then traveled to a clinic in...