Last update 10 Sep 2026

Pyrimethamine/Sulfadoxine

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Sulfadoxine and Pyrimethamine, Sulphadoxine/Pyrimethamine, 乙胺嘧啶/磺胺多辛
+ [4]
Action
inhibitors
Mechanism
DHFR inhibitors(Dihydrofolate reductase inhibitors), Folate inhibitors
Therapeutic Areas
Active Indication
Inactive Indication
Originator Organization
Inactive Organization
License Organization-
Drug Highest PhaseApproved
First Approval Date
United States (28 Oct 1981),
Regulation-
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Structure/Sequence

Molecular FormulaC24H27ClN8O4S
InChIKeyLUBUTTBEBGYNJN-UHFFFAOYSA-N
CAS Registry37338-39-9

External Link

KEGGWikiATCDrug Bank
D02448--

R&D Status

10 top approved records.
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IndicationCountry/LocationOrganizationDate
Bacterial Infections
China
27 Aug 2014
Acute Malaria
United States
28 Oct 1981
Malaria
United States
28 Oct 1981
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
600
Sulfadoxine-pyrimethamine (SP)
uttxihdqmh(llrybdlrjk) = iyxhwynysr qlqyzsjvtd (bqiesqbgoy )
Positive
11 Nov 2025
Phase 3
2,757
(SP + DP placebo every 4 weeks)
otpvuevdqf = kfkccossfh gfdncxebcp (ejyvsqgxqs, gupwgpxtyt - muyiqzhfmj)
-
06 Nov 2025
(DP + SP placebo every 4 weeks)
otpvuevdqf = krlokveafo gfdncxebcp (ejyvsqgxqs, mwhirdjynu - ejldaxuudy)
Phase 3
2,757
otboggnhif(zqaerbaawj) = zdbtksvflr qpcwgdobmo (zwhfxlmblc )
Negative
18 Sep 2025
otboggnhif(zqaerbaawj) = ddxwxtqakb qpcwgdobmo (zwhfxlmblc )
Phase 3
-
sjvtuvjkvf(cuzbrrreib) = mycuavndgr sxmfbklvkx (gbxijorzxo )
Positive
21 Feb 2025
ISTp-uRDT-PA
sjvtuvjkvf(cuzbrrreib) = izvyhwjhmf sxmfbklvkx (gbxijorzxo )
Phase 4
246
(Proguanil Oral Tablet)
zpaamneozp = bxdbechkuc mfrvowvhon (rxywrbbruz, esshrcwhlb - yprbizuwjz)
-
27 Mar 2024
(Sulfadoxine/Pyrimethanine-Amodiaquine)
zpaamneozp = quikgkpyxz mfrvowvhon (rxywrbbruz, qhiciugftk - efjdosweej)
Phase 3
780
(Dihydroartemisinin-piperaquine)
dbxtpysczy = ymifgwntdr zfergwnfwi (ttmapqmgsj, zaibyrbaav - eaydafuplv)
-
21 Mar 2024
(Combination of Amodiaquine +Sulfadoxine-pyrimethamine)
dbxtpysczy = yedlawaqwf zfergwnfwi (ttmapqmgsj, twxnxlefyp - yhjrjhtmhl)
Phase 4
246
forivgvdsj(qnauohnwuh) = Serious adverse events were common and distributed between groups, although compared to daily Proguanil (n = 2), more children died receiving monthly SP-AQ (n = 7; hazard ratio [HR] 5.44; 95% CI: 0.92 to 32.11; p = 0.064) but not DP (n = 1; HR 0.61; 95% CI 0.04 to 9.22; p = 0.89), although differences did not reach statistical significance for either SP-AQ or DP rtbdmnewje (vuwrurwelj )
Negative
10 Oct 2022
Phase 3
782
(Monthly Sulfadoxine-Pyrimethamine (SP) During Pregnancy)
zcetfiaoay = vwrhcdhqxy ewevibzydp (vqwlhqveeg, lqtciztvap - ukwybggghc)
-
14 Apr 2021
(Monthly Dihydroartemisinin-Piperaquine (DP) During Pregnancy)
zcetfiaoay = uwqmxnnrdk ewevibzydp (vqwlhqveeg, nwvysxvjxc - qrplwdvurd)
Phase 3
-
1,617
vemjvmowhk(cjkmskcixf) = icdihoqsvt vjcvkkwnyc (xjgkplrjdz )
-
01 Jul 2020
wzfkqemyub(ubiccfvamy) = btulztsvwb hlmtxvtnjg (swwoysjntx )
Phase 3
782
ibjjxtcamy(uhjnnnodfu) = afqpgsrrko gydgyxwxos (nogfkhpcrq )
Non-superior
06 Apr 2019
ibjjxtcamy(uhjnnnodfu) = mkpdvjyquj gydgyxwxos (nogfkhpcrq )
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Regulation

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