The aim: To assess the efficacy and safety of dapagliflozin in the treatment of comorbid cardiac patients with type 2 diabetes mellitus (T2DM) in combination with arterial hypertension (AH) and overweight in outpatient setting. Materials and methods: Under observation were 19 patients who were treated in outpatient setting during 2019-2021 for AH and had T2DM, overweight or obesity. As part of complex treatment, patients received dapagliflozin 10 mg once a day for 12 months. Results: The normalization of blood pressure, elimination of heart failure symptoms on the background of increased ejection fraction, improved indicators of the functional capacity of the kidneys, and a decrease in the degree of proteinuria/albuminuria were noted after treatment. The patients had an easier time losing weight (body mass index and waist circumference decreased; p<0.05) and decreased levels of total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C). None of the monitored patients had cases of hypoglycemia or urinary tract infection. The number and/or doses of antihypertensive, hypouricemic and diuretic drugs were gradually reduced. Conclusions: Using dapagliflozin in a standard dose of 10 mg/day in the complex therapy of patients with T2DM in combination with arterial hypertension and overweight contributes not only to the normalization of blood pressure, but also to a reduction in body weight and waist circumference. The proposed therapy can be an alternative for the treatment of patients with T2DM with concomitant overweight or obesity, arterial hypertension, with or without heart and/or renal failure as a first-line antidiabetic drug.