| Cover | Nov. 29, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 29, 2021 |
| Entity File Number | 001-40582 |
| Entity Registrant Name | Unicycive Therapeutics, Inc. |
| Entity Central Index Key | 0001766140 |
| Entity Tax Identification Number | 81-3638692 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 5150 El Camino Real |
| Entity Address, Address Line Two | Suite A-32 |
| Entity Address, City or Town | Los Alto |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94022 |
| City Area Code | (650) |
| Local Phone Number | 351-4495 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | UNCY |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
