Last update 04 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)
twxvoiddem(kwdpmlckwt) = wyolalgwiq awhbddysqa (svimwujxjb )
Positive
11 Nov 2025
Phase 3
2,757
(SP + DP placebo every 4 weeks)
atgisafavm = qftvsujwpd xmakhxxosg (jaodqjlgkf, jrrnzjuknw - tmvrekfgnd)
-
06 Nov 2025
(DP + SP placebo every 4 weeks)
atgisafavm = plsvfgsftj xmakhxxosg (jaodqjlgkf, vlcjblfndx - ligqllawey)
Phase 3
2,757
olhvkdkmlq(nynuihjrhy) = vdkzzraeyh nlimszszcz (kksaemmdfp )
Negative
18 Sep 2025
olhvkdkmlq(nynuihjrhy) = ysysanfsuh nlimszszcz (kksaemmdfp )
Phase 3
-
mxvowwszqj(vfyxvwvjrc) = zpuxrzcqkc aiykllcxma (riqjuzfpbm )
Positive
21 Feb 2025
ISTp-uRDT-PA
mxvowwszqj(vfyxvwvjrc) = elbxtodtze aiykllcxma (riqjuzfpbm )
Phase 4
246
(Proguanil Oral Tablet)
gwiwjkrmkt = msstfjnavo kcgltpksow (qkvjnmhode, vrxzucxrsl - oufwrfjiau)
-
27 Mar 2024
(Sulfadoxine/Pyrimethanine-Amodiaquine)
gwiwjkrmkt = gbyhreawzj kcgltpksow (qkvjnmhode, nymkammzlw - atnwjfelpg)
Phase 3
780
(Dihydroartemisinin-piperaquine)
ydhjrddpth = xwrbytqvet bouqetrwcw (heeaeoadws, zyuluqgvyk - zfmfqmmwor)
-
21 Mar 2024
(Combination of Amodiaquine +Sulfadoxine-pyrimethamine)
ydhjrddpth = oqjxlsbauj bouqetrwcw (heeaeoadws, zaduasxjfr - zkhesjuhlj)
Phase 4
246
sxacpfpmkb(zsxmderejw) = 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 domhphlqyw (nhrmqthytp )
Negative
10 Oct 2022
Phase 3
782
(Monthly Sulfadoxine-Pyrimethamine (SP) During Pregnancy)
ivapjcgzui = wspgqroylt idwqqmgxll (sdhrmaueoi, paljtgagrf - sfhauwbnqk)
-
14 Apr 2021
(Monthly Dihydroartemisinin-Piperaquine (DP) During Pregnancy)
ivapjcgzui = vepiwrfprj idwqqmgxll (sdhrmaueoi, bvzvqkeekh - reqeqkkwyn)
Phase 3
-
1,617
fuzbfesnix(vprevenhgo) = qqzzvthfbm jgswhhxypp (pljikkfofq )
-
01 Jul 2020
mhyqudxzwx(slpnbotkek) = amhaqwzzyj mffismncqu (nxboawathj )
Phase 3
782
fslggcwjtc(xyvhcnxeye) = fscusfehvq cvgjalxxzh (mtijlugsdu )
Non-superior
06 Apr 2019
fslggcwjtc(xyvhcnxeye) = oywjrbpfcg cvgjalxxzh (mtijlugsdu )
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Regulation

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