Drugs / Onradivir
last change Dec 2025 re-read 2 minutes ago

Onradivir

also known as ZSP1273 · [14C] ZSP1273

Small molecule

Developed for
influenza
Investigated by
Guangdong Raynovent Biotech Co., Ltd · Guangdong Zhongsheng Pharmaceutical Co., Ltd. · Ruijin Hospital

Trials 15 · a red edge is where a trial was stopped

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 19 trials
Phase 1 NCT06248567 Jan → Apr 2024 impaired renal function disease Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 1 NCT06164431 Nov → Dec 2023 Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 1 NCT06157450 Oct → Nov 2023 Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 1 NCT05954624 Jul → Nov 2023 Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 1 NCT05942365 Jun → Jul 2023 Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 1 NCT05856513 Jun → Jul 2023 Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 1 NCT05873426 Mar → Apr 2023 Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 1 NCT05108051 Nov 2020 → Mar 2021 Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 1 NCT03679143 Sep 2018 → Mar 2019 influenza Guangdong Zhongsheng Pharmaceutical Co., Ltd. Completed No outcome recorded
Phase 22 trials
Phase 2 NCT06656026 Nov 2024 → Jun 2025 influenza Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 2 NCT04024137 Dec 2019 → May 2020 influenza Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded
Phase 34 trials
Phase 3 NCT07229807 Nov → Dec 2025 overdue influenza Guangdong Raynovent Biotech Co., Ltd Active not recruiting No outcome recorded
Phase 3 NCT07229547 Nov 2025 → Dec 2026 expected influenza Ruijin Hospital Recruiting No outcome recorded
Phase 3 NCT07229820 Nov → Dec 2025 overdue influenza Guangdong Raynovent Biotech Co., Ltd Active not recruiting No outcome recorded
Phase 3 NCT04683406 Dec 2020 → Apr 2023 influenza Guangdong Raynovent Biotech Co., Ltd Completed No outcome recorded

Evidence & citations 6 cited values

Every value below carries the sentence it was read from. 17 sources stand behind the page.

FieldValueCited text
Known as Onradivir Onradivir is an influenza A virus RNA polymerase basic protein 2 inhibitor that is currently under development for the treatment of influenza A.” PMID 40757817 Aug 2025
3

“BACKGROUND: Onradivir (ZSP1273) is a potent inhibitor of the PB2 subunit of influenza A virus (IAV) polymerase.” PMID 40489986 Jun 2025

Onradivir (ZSP1273) is a novel anti-influenza A virus inhibitor.” PMID 38330975 Feb 2024

NCT07229547

Known as [14C] ZSP1273 “Drug: [14C] ZSP1273NCT05873426
Known as ZSP1273 “BACKGROUND: Onradivir (ZSP1273) is a potent inhibitor of the PB2 subunit of influenza A virus (IAV) polymerase.” PMID 40489986 Jun 2025
12

NCT06656026

NCT06157450

NCT05108051

NCT05942365

NCT05856513

NCT04024137

NCT05954624

NCT03679143

NCT07229807

NCT05873426

NCT07229820

NCT06164431

Action Inhibit “ZSP1273 is a small-molecule anti-influenza drug targeting the RNA polymerase PB2 subunit of the influenza virus.” PMID 34654349 Nov 2021
Modality Small molecule “ZSP1273 is a small-molecule anti-influenza drug” PMID 34654349 Nov 2021
Route Oral “ZSP1273 tablets administered orally once daily under fasted condition” NCT03679143