WAciclovir
WAminoglycoside
WAmphotericin B
WΒ-lactam antibiotic
WCalcium ferrocyanide
WCiclosporin
WCimetidine
WCiprofloxacin
WCisplatin
WDemeclocycline
WDiclofenac
WDiethylene glycol
WDiquat
WFoscarnet
WFumaric acid
WFurosemide
WGentamicin
WGold salts
WHeroin
WIbuprofen
WLithium (medication)
WMannitol
WMelamine cyanurate
WMethotrexate
WOrellanine
WOxalic acid
WPamidronic acid
WParaquat
WPenicillamine
WPhenytoin
WPotassium ferrocyanide
WRanitidine
WRhubarb
WRifampicin
WSodium ferrocyanide
WTacrolimus
WThiazide
WVancomycin