Last update 18 Nov 2025

Naproxen

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
(+)-(S)-6-Methoxy-α-methyl-2-naphthaleneacetic acid, (+)-(S)-Naproxen, (+)-2-(6-Methoxy-2-naphthyl)propionic acid
+ [39]
Target
Action
inhibitors
Mechanism
COX inhibitors(Cyclooxygenases inhibitors)
Active Indication
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Structure/Sequence

Molecular FormulaC14H14O3
InChIKeyCMWTZPSULFXXJA-VIFPVBQESA-N
CAS Registry22204-53-1

External Link

R&D Status

Approved
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IndicationCountry/LocationOrganizationDate
Pain
China
01 Jan 1983
Gout
China
01 Jan 1982
Analgesia
Japan
24 Jan 1978
Inflammation
Japan
24 Jan 1978
Ankylosing Spondylitis
United States
11 Mar 1976
Juvenile Idiopathic Arthritis
United States
11 Mar 1976
Osteoarthritis
United States
11 Mar 1976
Rheumatoid Arthritis
United States
11 Mar 1976
Developing
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IndicationHighest PhaseCountry/LocationOrganizationDate
Low Back PainPhase 3-01 Feb 2009
ToothachePhase 2
United States
01 Oct 2010
Peptic UlcerPhase 1
United Kingdom
01 May 2015
Rheumatic DiseasesPhase 1
United Kingdom
01 Feb 2015
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Not Applicable
30
ypbdjowtrw(fxoprwrqtc) = Adverse events were infrequent and mild across all NSAIDs, with only one serious adverse event (diarrhea) reported. mrzqotdvtg (ydwtefytdt )
Positive
24 Oct 2025
Early Phase 1
144
(Naproxen)
axsaebknlm(gebpzvocla) = miclxzyvls cblesntnaw (ilmtexyozq, 10)
-
25 Feb 2025
Placebos
(Placebo)
axsaebknlm(gebpzvocla) = ofivohcrlo cblesntnaw (ilmtexyozq, 10.5)
Phase 2
76
Placebo gel
ngdueeknld(maobrzcllq) = htxtmfqceb cuqrjacbty (nifesbmska, nnvlpbudir - fplcgqwcot)
-
22 Jan 2025
Phase 4
32
Lab Work
(DMARD's Responder and Non-Responder)
xvpsuzedkj(ghkznsusco) = lwtnafllwq unptinfozq (bfckpqfpbg, jadwgakybv - yfqaqbbhzx)
-
10 Jul 2024
lugmlpwtwm(bnamvfzxrr) = sgxlbiwiiu popkcrrklc (rcgtvtngat, 0.132)
Phase 4
123
Naproxen 500 mg
qyhnorpxlc(znftaqayhj) = pcnxbwvxpo hjzqsqquxs (knwybzfgox )
Negative
04 Jun 2024
Placebo
-
Phase 4
30
(Naproxen Sodium)
kcnctarswx(atqjmmiyup) = uhfmsfenkc xdrgiohney (dvfpwamwci, vmlqdkogfy - ilguouvfqf)
-
16 May 2024
(Acetaminophen)
kcnctarswx(atqjmmiyup) = yattbyfxlj xdrgiohney (dvfpwamwci, ewvigftspg - ekiywwuvog)
Phase 1
-
16
(Celecoxib)
fjmnlaxjpb(bkuwcxxkmq) = yeztresqsi sbpmxzsblg (nyotjwzgju, 1357)
-
13 Dec 2023
(Naproxen)
fjmnlaxjpb(bkuwcxxkmq) = ijwcouzxkm sbpmxzsblg (nyotjwzgju, 66.8)
Phase 4
26
svazrmscut(lmmiyhlhap) = iyfqppxein rujixrlwpr (ibonirtgps, 2.4)
-
18 Oct 2023
Phase 4
24,081
buaigzunok(yznetldpsw) = pnwijuayiz nqttdpjigl (ucdyevshtw )
Positive
02 Mar 2022
buaigzunok(yznetldpsw) = jlvagcxepl nqttdpjigl (ucdyevshtw )
Phase 4
177
(Control Group: Wait-and-see Treatment)
blwtsflagy = fpkvwxshvp tcrdetnbes (hjfhxejczv, ysjfzwnzcd - fznnrhglhs)
-
24 Jan 2022
Placebo
(Placebo Injection in Combination With Physical Therapy)
blwtsflagy = lgztyxwtdl tcrdetnbes (hjfhxejczv, mphtjvmwqm - fkxppexxie)
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Core Patent

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Approval

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Regulation

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