Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.19.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2019
May 08, 2019
Document and Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Entity Registrant Name Synthetic Biologics, Inc.  
Entity Central Index Key 0000894158  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Trading Symbol SYN  
Entity Common Stock, Shares Outstanding   16,483,821
Entity Emerging Growth Company false  
Entity Small Business true