[The effect of alkaloids from Tabernanthe iboga H. Bn. on the response of isolated organs to catecholamines and the possible role of calcium exchange. Case of Ibogaine].

On isolated Rat duodenum, ibogaine (70 mumoles/l) increases the hypertonic effect following the addition of Calcium ions to the organ previously decalcified. Moreover, this alkaloid increases the hypotomic effect resulting from decalcification of the normal organs. These actions are taken into account with the potentiating effects of ibogaine on noradrenaline and dopamine responses observed on rat vas deferens.