| Cover | Nov. 15, 2023 |
| Document Information [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | false |
| Document Period End Date | Nov. 15, 2023 |
| Entity File Number | 001-38302 |
| Entity Registrant Name | NRX PHARMACEUTICALS, INC. |
| Entity Central Index Key | 0001719406 |
| Entity Tax Identification Number | 82-2844431 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1201 Orange Street |
| Entity Address, Address Line Two | Suite 600 |
| Entity Address, City or Town | Wilmington |
| Entity Address, State or Province | DE |
| Entity Address, Postal Zip Code | 19801 |
| City Area Code | 484 |
| Local Phone Number | 254-6134 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | NRXP |
| Security Exchange Name | NASDAQ |
| Warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants to purchase one share of Common Stock |
| Trading Symbol | NRXPW |
| Security Exchange Name | NASDAQ |
