{{Infobox drug | Watchedfields = changed | verifiedrevid = 459442331 | drug_name = | INN = | type = | image = Chloroquine.svg | width = 200 | alt = | image2 = Chloroquine-ligand-CLQ-A-from-PDB-xtal-4FGL-Mercury-3D-balls.png | width2 = 180 | alt2 = | caption = | pronounce = | tradename = Aralen, other | Drugs.com = | MedlinePlus = | licence_CA = | licence_EU = | DailyMedID = Chloroquine | licence_US = Chloroquine | pregnancy_AU = | pregnancy_AU_comment = | pregnancy_US = | pregnancy_US_comment = | pregnancy_category= | dependency_liability = | addiction_liability = | routes_of_administration = by mouth | class = | ATCvet = | ATC_prefix = P01 | ATC_suffix = BA01 | ATC_supplemental = | legal_AU = | legal_AU_comment = | legal_BR = | legal_BR_comment = | legal_CA = | legal_CA_comment = | legal_DE = | legal_DE_comment = | legal_NZ = | legal_NZ_comment = | legal_UK = P | legal_UK_comment = | legal_US = Rx-only | legal_US_comment = | legal_UN = | legal_UN_comment = | legal_status = Rx only | bioavailability = | protein_bound = | metabolism = Liver | metabolites = | onset = | elimination_half-life = 1-2 months | duration_of_action = | excretion = | CAS_number_Ref = | CAS_number = 54-05-7 | CAS_supplemental = | PubChem = 2719 | IUPHAR_ligand = 5535 | DrugBank_Ref = | DrugBank = DB00608 | ChemSpiderID_Ref = | ChemSpiderID = 2618 | UNII_Ref = | UNII = 886U3H6UFF | KEGG_Ref = | KEGG = D02366 | ChEBI_Ref = | ChEBI = 3638 | ChEMBL_Ref = | ChEMBL = 76 | NIAID_ChemDB = 000733 | PDB_ligand = | synonyms = Chloroquine phosphate | IUPAC_name = (RS)-N-(7-chloroquinolin-4-yl)-N,N-diethyl-pentane-1,4-diamine | C=18 | H=26 | Cl=1 | N=3 | SMILES = Clc1cc2nccc(c2cc1)NC(C)CCCN(CC)CC | Jmol = | StdInChI_Ref = | StdInChI = 1S/C18H26ClN3/c1-4-22(5-2)12-6-7-14(3)21-17-10-11-20-18-13-15(19)8-9-16(17)18/h8-11,13-14H,4-7,12H2,1-3H3,(H,20,21) | StdInChI_comment = | StdInChIKey_Ref = | StdInChIKey = WHTVZRBIWZFKQO-UHFFFAOYSA-N | density = | density_notes = | melting_point = | melting_high = | melting_notes = | boiling_point = | boiling_notes = | solubility = | sol_units = | specific_rotation = }}Chloroquine''' is a medication primarily used to prevent and treat malaria in areas where malaria remains sensitive to its effects. Certain types of malaria, resistant strains, and complicated cases typically require different or additional medication. Chloroquine is also occasionally used for amebiasis that is occurring outside the intestines, rheumatoid arthritis, and lupus erythematosus. While it has not been formally studied in pregnancy, it appears safe. It