With new a FDA approval for a years-old type 2 diabetes drug, Astrazeneca plc's Farxiga (dapagliflozin) has become the first sodium-glucose co-transporter 2 (SGLT2) inhibitor to be approved to reduce the risk of cardiovascular (CV) death and hospitalization for heart failure patients with reduced ejection fraction, a measure of how much blood the left ventricle pumps out with each contraction.