<prompt> Phytonadione is used in treatment of which toxicity-HeparinOral anticoagulantDigoxinStreptokinase  <response>: Ans. is b i.e., Oral anticoagulant Vit K1 Phytonadione is the preparation of choice for overdose of oral anticoagulants Dicumarol.Remembero Specific antidote for oral anticoagulants - Vit K1o Specific antidote for heparin - Protamineo Specific antidote for fibrinolytics e.g. streptokinase - antifibrinolytics epsilone amino-caproic acid, Tranaexaemic acid, Aprotinin. 