{{Drugbox | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 458460406 | drug_name = | INN = | type = | image = Ranitidine.svg | width = 250 | alt = | image2 = File:Ranitidine-A-3D-balls.png | width2 = | alt2 = | caption = | JAN = ranitidine hydrochloride | pronounce = | tradename = Zantac, others | Drugs.com = | MedlinePlus = a601106 | licence_CA = | licence_EU = | DailyMedID = Ranitidine | licence_US = Ranitidine | pregnancy_AU = B1 | pregnancy_AU_comment = | pregnancy_category = | routes_of_administration = By mouth, intravenous (IV) | class = Histamine H2 receptor antagonist, aka H2 blocker | ATCvet = | ATC_prefix = A02 | ATC_suffix = BA02 | ATC_supplemental = (ranitidine bismuth citrate) | legal_AU = S4 | legal_AU_comment = / S2 (Pharmacy Medicine) | legal_BR = | legal_BR_comment = | legal_CA = | legal_CA_comment = | legal_DE = | legal_DE_comment = | legal_NZ = | legal_NZ_comment = | legal_UK = POM | legal_UK_comment = / GSL (General sales list) | legal_US = Rx-only | legal_US_comment = / OTC | legal_EU = Rx-only | legal_UN = | legal_UN_comment = | legal_status = | bioavailability = 50% (by mouth) | protein_bound = 15% | metabolism = Liver: FMOs, including FMO3; other enzymes | metabolites = | onset = 55–65 minutes (150 mg dose)55–115 minutes (75 mg dose) | elimination_half-life = 2–3 hours | duration_of_action = | excretion = 30–70% kidney | index2_label = HCl | CAS_number_Ref = | CAS_number = 66357-35-5 | CAS_number2_Ref = | CAS_number2 = 66357-59-3 | CAS_supplemental = | PubChem = 3001055 | PubChem2 = 3033332 | IUPHAR_ligand = 1234 | DrugBank_Ref = | DrugBank = DB00863 | DrugBank2_Ref = | DrugBank2 = DBSALT000487 | ChemSpiderID_Ref = | ChemSpiderID = 4863 | ChemSpiderID2_Ref = | ChemSpiderID2 = 43590 | UNII_Ref = | UNII = 884KT10YB7 | UNII2_Ref = | UNII2 = BK76465IHM | KEGG_Ref = | KEGG = D00422 | KEGG2_Ref = | KEGG2 = D00673 | ChEBI_Ref = | ChEBI = 8776 | ChEBI2_Ref = | ChEBI2 = 8777 | ChEMBL_Ref = | ChEMBL = 1790041 | ChEMBL2_Ref = | ChEMBL2 = 2110372 | NIAID_ChemDB = | PDB_ligand = | synonyms = Dimethyl [(5-{[(2-{[1-(methylamino)-2-nitroethenyl]amino}ethyl)sulfanyl]methyl}furan-2-yl)methyl]amine | IUPAC_name = N-(2-[(5-[(Dimethylamino)methyl]furan-2-yl)methylthio]ethyl)-''N-methyl-2-nitroethene-1,1-diamine | C = 13 | H = 22 | N = 4 | O = 3 | S = 1 | SMILES = [O-] [N+]( = O)C =