Dapagliflozin is used to improve blood sugar control in adults with type 2 diabetes. It works by helping the kidneys remove glucose from the bloodstream. It may also be used to reduce the risk of heart failure in people with type 2 diabetes and cardiovascular disease. Common side effects include urinary tract infections, increased urination, and thirst. Serious side effects can include dehydration, kidney problems, and severe allergic reactions.