Tobias Erny is an Iboga activist and researcher who also administers the plant medicine for therapy and treatment of addiction.
Tabernanthe iboga is an African shrub used in the Bwiti cultures of Gabon and to a lesser extent Cameroon and Congo. It contains the potent psychoactive indole alkaloid Ibogaine.
Tobias Erny’s book can be purchased from here:-
http://www.nachtschatten.ch/products/product_1524.html