Page "Gerovital" Paragraph 43

::" A specially stabilized form of procaine hydrochloride ( Gerovital H3 ) has been shown to be a more potent inhibitor of monoamine oxidase than procaine HCl itself and a weaker inhibitor of this enzyme than iproniazid.

[...] Analysis of studies using Lineweaver-Burk and Dixon plots revealed that Gerovital H3 was a fully competitive inhibitor of monoamine oxidase.

That Gerovital H3 is a weak, reversible, competitive inhibitor of monoamine oxidase inhibitor ) may explain the absence of adverse reactions associated with the clinical use of Gerovital H3 as compared to the severe adverse reactions that have been associated with the use of irreversible monoamine oxidase inhibitors.