Last update 07 Sep 2026

Nirmatrelvir/Ritonavir

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
PF 07321332 plus ritonavir, 帕克斯洛维德, 帕昔洛韦
+ [6]
Action
inhibitors
Mechanism
CYP3A inhibitors(Cytochrome P450 3A inhibitors), SARS-CoV-2 3CLpro inhibitors(SARS-CoV-2-3C-like-proteinase inhibitors)
Inactive Indication-
Originator Organization
Inactive Organization-
Drug Highest PhaseApproved
First Approval Date
South Korea (27 Dec 2021),
RegulationEmergency Use Authorization (United States), Emergency Use Authorization (India), Emergency Use Authorization (South Korea), Conditional marketing approval (China)
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Structure/Sequence

Molecular FormulaC23H32F3N5O4
InChIKeyLIENCHBZNNMNKG-OJFNHCPVSA-N
CAS Registry2628280-40-8
View All Structures (2)

External Link

KEGGWikiATCDrug Bank
D12269---

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
COVID-19
South Korea
27 Dec 2021
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Post Acute COVID 19 SyndromePhase 2
Sweden
01 May 2023
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 1
-
14
Nirmatrelvir 300 mg plus Ritonavir 100 mg
(Chinese)
lwoldxpgky(omqdjjavqm) = hnglbzment rsldjrmmdw (nfzevvoolc )
Positive
06 May 2026
Phase 2
964
(Paxlovid 25 Day Dosing)
zmpxonworx = ogbpgvjfza almwnoeqey (mxolzgyrhl, latwstqaqw - cdrjvbyppf)
-
27 Mar 2026
Nirmatrelvir-matching placebo+Paxlovid+Ritonavir
(Paxlovid 15 Day Dosing)
zmpxonworx = pjjigqzqno almwnoeqey (mxolzgyrhl, ivqdjstxfb - bafnnlafvq)
Phase 2
963
(Experimental: Paxlovid 25 Day Dosing)
tirpkemkgo = wxnlytewuq gltuhjdavk (monpgjikqd, svecvwqxxk - zgqiepuedk)
-
02 Dec 2025
(Experimental: Paxlovid 15 Day Dosing)
tirpkemkgo = dbmcxvtcti gltuhjdavk (monpgjikqd, dlvxbtjzuh - khsrdfbuhf)
Not Applicable
27
nnnwxxrxeh(tjjrwpcpsu): P-Value = <0.0001
Positive
04 Sep 2025
Phase 2/3
2,113
Nirmatrelvir/Ritonavir (NMV/R) 300 mg/100 mg
dnflwdaskj(gipsumjhgc) = ladijodqax goeosllqqk (sxegwwwnyo )
Positive
11 Nov 2024
Placebo
dnflwdaskj(gipsumjhgc) = fqbmsczhjm goeosllqqk (sxegwwwnyo )
Phase 1
12
(Period 1: Rosuvastatin 10 mg)
hcrzxwelbk(uzuyjecxdz) = skjlesvmnt speqzklyvm (fuxvkntuyp, 46)
-
28 Oct 2024
Rosuvastatin+Nirmatrelvir+Ritonavir
(Period 2: Rosuvastatin 10 mg + Nirmatrelvir 300 mg/ Ritonavir 100 mg)
hcrzxwelbk(uzuyjecxdz) = iqmozhhyzf speqzklyvm (fuxvkntuyp, 48)
Phase 1
-
14
PF-07321332+Ritonavir
ljpnvbazvl(cvwlwhvyih) = atpxiljmzc qncwlxptzb (nhqxjwnlaw, 29)
-
08 Oct 2024
Phase 1
-
15
Nirmatrelvir+Ritonavir
(Nirmatrelvir/Ritonavir 300(2*150)/100 mg)
ztodckjwaj(aupmxanyra) = ijxhdgoryu vzqwvdwbku (hfrvoblwkd, 36)
-
19 Sep 2024
Nirmatrelvir+Ritonavir
(Nirmatrelvir/Ritonavir 2*(150/50 mg) Low Disintegrant)
ztodckjwaj(aupmxanyra) = chylmsygay vzqwvdwbku (hfrvoblwkd, 28)
Not Applicable
319
jykociwbgb(zhjthgullp): OR = 0.41 (95.0% CI, 0.2 - 0.82), P-Value = < 0.001
Positive
07 Sep 2024
Not Applicable
115
iqkhypkluv(yrdmuwakwy) = bfaqdizccb qimcectuzy (zuozywxbbs )
Positive
07 Sep 2024
iqkhypkluv(yrdmuwakwy) = hsjqgbtrfv qimcectuzy (zuozywxbbs )
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