Cover - shares	9 Months Ended
	Sep. 30, 2021	Nov. 12, 2021
Document Type	10-Q/A
Amendment Flag	true
Amendment Description	NRX Pharmaceuticals, Inc. (the “Company,” “we,” “us” or “our”) is filing this Amendment No. 1 to its Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2021 (this “Quarterly Report”) to amend and restate certain items in its Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2021 originally filed with the Securities and Exchange Commission (the “SEC”) on November 15, 2021 (the “Original Quarterly Report”). The Original Quarterly Report should no longer be relied upon due to insufficient review procedures related to complex warrant transactions.
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Registrant Name	NRX Pharmaceuticals, Inc.
Entity Central Index Key	0001719406
Entity File Number	001-39412
Entity Tax Identification Number	82-2844431
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	No
Entity Incorporation, State or Country Code	DE
Entity Address, State or Province	DE
Entity Address, Address Line One	1201 Orange Street
Entity Address, Address Line Two	Suite 600
Entity Address, City or Town	Wilmington
Entity Address, Postal Zip Code	19801
City Area Code	484
Local Phone Number	254-6134
Entity Common Stock, Shares Outstanding		58,810,338
Common Stock
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	NRXP
Security Exchange Name	NASDAQ
Common stock warrants
Title of 12(b) Security	Warrants to purchase one share of Common Stock
Trading Symbol	NRXPW
Security Exchange Name	NASDAQ