Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
6 Months Ended
Jun. 30, 2021
Aug. 03, 2021
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2021  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q2  
Entity Registrant Name Baudax Bio, Inc.  
Entity Central Index Key 0001780097  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   84,403,342
Entity Shell Company false  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Trading Symbol BXRX  
Entity File Number 001-39101  
Entity Tax Identification Number 47-4639500  
Entity Address, Address Line One 490 Lapp Road  
Entity Address, City or Town Malvern  
City Area Code 484  
Local Phone Number 395-2440  
Entity Address, Postal Zip Code 19355  
Entity Address, State or Province PA  
Entity Incorporation, State or Country Code PA  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Security Exchange Name NASDAQ  
Title of 12(b) Security Common Stock, par value $0.01