| Document And Entity Information | Nov. 10, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | VistaGen Therapeutics, Inc. |
| Document, Type | 8-K |
| Document, Period End Date | Nov. 10, 2021 |
| Entity, Incorporation, State or Country Code | NV |
| Entity, File Number | 000-54014 |
| Entity, Tax Identification Number | 20-5093315 |
| Entity, Address, Address Line One | 343 Allerton Ave. |
| Entity, Address, City or Town | South San Francisco |
| Entity, Address, State or Province | CA |
| Entity, Address, Postal Zip Code | 94090 |
| City Area Code | 650 |
| Local Phone Number | 577-3600 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | VTGN |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0001411685 |
