CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING
We hereby consent to the incorporation by reference in the
Registration Statements on Form S-8 (File Nos. 333-223556
and Form S-3 (File No. 333-215671) of VistaGen Therapeutics, Inc.
of our report dated June 25, 2019
(which report expresses an unqualified opinion and
includes an explanatory paragraph expressing substantial doubt
about the Company’s ability to continue as a going concern), relating to the consolidated financial
statements of VistaGen Therapeutics, Inc., which appears in this
Annual Report on Form 10-K.
/s/ OUM & CO. LLP
San Francisco, California