Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information - shares
3 Months Ended
Mar. 31, 2016
May. 02, 2016
Document Information [Line Items]    
Entity Registrant Name Synthetic Biologics, Inc.  
Entity Central Index Key 0000894158  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Trading Symbol SYN  
Entity Common Stock, Shares Outstanding   90,826,752
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2016  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2016