Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Mar. 31, 2021
Jun. 28, 2021
Sep. 30, 2020
Cover [Abstract]      
Entity Registrant Name VistaGen Therapeutics, Inc.    
Entity Central Index Key 0001411685    
Document Type 10-K    
Document Period End Date Mar. 31, 2021    
Amendment Flag false    
Current Fiscal Year End Date --03-31    
Entity a Well-known Seasoned Issuer No    
Entity a Voluntary Filer No    
Entity's Reporting Status Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business true    
Entity Shell Company false    
Entity Interactive Data Current Yes    
Entity Incorporation, State or Country Code NV    
Entity File Number 001-37761    
Entity Public Float     $ 51,365,745
Entity Common Stock, Shares Outstanding   191,382,350  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021