Open Access Articles- Top Results for Proguanil


File:Proguanil Structural Formulae.png
File:Proguanil sf.png
Systematic (IUPAC) name
1-(4-chlorophenyl)-2-(N'-propan-2-ylcarbamimidoyl) guanidine
Clinical data
Trade names Paludrine
AHFS/ Micromedex Detailed Consumer Information
Pharmacokinetic data
Half-life ~20 h
500-92-5 7pxY
PubChem CID 4923
DrugBank DB01131 7pxY
ChemSpider 4754 7pxY
UNII S61K3P7B2V 7pxY
KEGG D08428 7pxY
ChEBI CHEBI:8455 7pxY
Chemical data
Formula C11H16ClN5
253.731 g/mol
 14pxY (what is this?)  (verify)

Proguanil (chlorguanide, chloroguanide) is a prophylactic antimalarial drug.[1][2] When taken, it is converted to the active metabolite cycloguanil. Proguanil is effective against sporozoites. Proguanil hydrochloride is marketed as Paludrine by AstraZeneca.

It has been used for malarial prophylaxis in children with sickle cell disease living in malaria-endemic areas for many years.

It is on the World Health Organization's List of Essential Medicines, a list of the most important medication needed in a basic health system.[3]

Medical uses

Proguanil is usually taken in combination with another antimalarial drug, such as atovaquone[4] (e.g. in the combination Malarone) or chloroquine.[5]

Malarone has fewer side effects than mefloquine, but can be more expensive because it is taken daily.

Proguanil is taken with atovaquone for chloroquine-resistant and multidrug resistant strains of P. falciparum and P. vivax. Proguanil combined with atovaquone is sold under the tradename Malarone (GlaxoSmithKline).


General precautions regarding proguanil involve watching out for feelings of sullenness and anxiety to a level outside the ordinary, when taking it over a period of several months.[citation needed] These may come on gradually and may not be immediately attributable to anything in particular.


The active metabolite of the proguanil is cycloguanil, which binds to the DHFR enzyme of the parasite and inhibts the folic acid metabolism. The mechanism for the cyclisation of the proguanil to cycloguanil has been recently explored by Bharatam et al.[citation needed]

See also


  1. ^ Carrington HC, Crowther AF, Davey DG, Levi AA, Rose FL (1951). "A metabolite of paludrine with high antimalarial activity". Nature 168 (4288): 1080. PMID 14910643. doi:10.1038/1681080a0. 
  2. ^ Crowther AF, Levi AA (1953). "Proguanil, the isolation of a metabolite with high antimalarial activity". Br J Pharmacol Chemother 8 (1): 93–97. PMC 1509229. PMID 13066702. doi:10.1111/j.1476-5381.1953.tb00758.x. 
  3. ^ "WHO Model List of EssentialMedicines" (PDF). World Health Organization. October 2013. Retrieved 22 April 2014. 
  4. ^ Sutherland CJ, Laundy M, Price N et al. (November 2008). "Mutations in the Plasmodium falciparum cytochrome b gene are associated with delayed parasite recrudescence in malaria patients treated with atovaquone-proguanill". Malar. J. 7 (1): 240. PMC 2640403. PMID 19021900. doi:10.1186/1475-2875-7-240. 
  5. ^ Payen C, Monnin L, Pulce C, Descotes J (December 2008). "Bone marrow aplasia following acute poisoning with chloroquine-proguanil". Clin Toxicol (Phila) 46 (10): 1085–7. PMID 19065311. doi:10.1080/15563650601182925. 

External links