SGLT2 inhibitors, the novel anti-diabetics are the new drugs which which have been approved for heart failure with reduced ejection fraction (HFrEF). 
After the landmark EMPA-REG_OUTCOME, DECLARE TIM IN 58, EMPEROR REDUCED and DAPA HF trials, empagliflozin and dapagliflozin have found a place in the management of HFrEF or heart failure. 
Lets discover what makes them special drugs in heart failure.