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Document And Entity Information (USD $)
 12 Months Ended
Mar. 31, 2015
Jun. 05, 2015
Sep. 30, 2014
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Mar. 31, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY    
Entity Registrant Name Ruthigen, Inc.    
Entity Central Index Key 0001574235    
Current Fiscal Year End Date --03-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 13,572,764dei_EntityPublicFloat
Trading Symbol RTGN    
Entity Common Stock, Shares Outstanding   4,804,290dei_EntityCommonStockSharesOutstanding