Monoamine oxidase, psychoenergizers, and tranquilizers.

1-Benzyl-2-methyl-5-methoxytryptamine (BAS) inhibits monoamine oxidase in man. This finding confirms the findings of Woolley in mice. Since BAS, a tranquilizing agent, and Marsilid, a psychoenergizer, are both monoamine oxidase inhibitors, doubt is cast upon the hypothesis, that the stimulatory effect of Marsilid is due to its ability to inhibit monoamine oxidase.