They don't prescribe it anymore because it wasn't very good at 'that job' and had a lot of unpleasant side effects for some people.

SWIM would still like to try some one day but it's recently been made illegal where he lives, as has iboga which he would NEVER try for the same reason as he will never tinker with the tropanes.

Wait what... you wanna do Ibogaine but not Iboga? Or did you mean Yohimbe?

The stimulus effects of ibogaine were compared with those of yohimbine, an alpha 2-adrenoceptor antagonist, 2,5-dimethoxy-4-methylamphetamine (DOM), a 5-hydroxytryptamine2 (5-HT2) agonist, and lysergic acid diethylamide (LSD), a nonspecific 5-HT agonist. Rats were trained with either yohimbine (6 mg/kg), DOM (0.6 mg/kg), or LSD (0.1 mg/kg) vs. no treatment in a two-lever discrimination task. Tests of generalization were then conducted with ibogaine. In yohimbine-trained animals, 39.7% of responses following ibogaine (15 mg/kg) were on the drug-appropriate lever, but this response level was not significantly different from no treatment-appropriate responding. A response distribution that was significantly different from responding under both drug and no treatment training conditions was observed in DOM-trained rats after administration of 15 mg/kg ibogaine. Pizotyline (BC-105) blocked all DOM-appropriate responding produced by ibogaine. In LSD-trained animals, 20 mg/kg ibogaine mimicked LSD. Pizotyline blocked LSD-appropriate responding produced by ibogaine in five of six animals. The present data suggest the involvement of 5-HT2 receptor activity, and the possibility of a 5-HT1A contribution, in the stimulus properties of ibogaine.

Ibogaine has Central nervous system activity, produces hallucinations and has anticonvulsant properties. Plants containing ibogaine are traditionally used in the treatment of fevers and hypertension, as a tonic, stimulant and aphrodisiac. It shares many of it's healing porperties with yohimbine and other related indole alkaloids. It's remarkable ability to stimulate the alpha-2 adrenal receptors produces a longlasting stimulation without the hypertension associated with many other stimulants. Recent research into yohimbine's effect to efficiently combat lethargy and lack of energy in HIV patients and cronic fatigue syndrome may also be applicable to ibogaine.
In it's religious use ibogaine in the form of iboga is consumed in massive quantities. These doses are frequently so high that they would be fatal for a person without tolerance build up. This tolerance is the result of long term consumption of iboga root powder, frequently starting in the mid teens. Hallucinations of contact with dead predecessors are common and form the basis of the traditional religious beliefs and also the basis for ibogaine's use in treatments of drug addictions rooted in psychological problems.

Are you saying that yohimbe is entheogenic?