| Cover | Oct. 14, 2021 |
| Cover [Abstract] | |
| Entity Registrant Name | VistaGen Therapeutics, Inc. |
| Entity Central Index Key | 0001411685 |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Emerging Growth Company | false |
| Document Period End Date | Oct. 14, 2021 |
| Entity Incorporation State Country Code | NV |
| Entity File Number | 000-54014 |
| Entity Tax Identification Number | 20-5093315 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, par value $0.001 per share |
| Trading Symbol | VTGN |
| Security Exchange Name | NASDAQ |
| Entity Address Address Line 1 | 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 |
