More than 90 % of patients developing heart failure (HF) have hypertension. The most frequent concomitant conditions are type-2 diabetes mellitus, obesity, atrial fibrillation, and coronary disease. HF outcome research focuses on decreasing mortality and preventing hospitalization for worsening HF syndrome. All drugs that decrease these HF endpoints lower blood pressure. Current drug treatments for HF are (i) angiotensin-converting enzyme inhibitors, angiotensin receptor blockers or angiotensin receptor neprilysin inhibitors, (ii) selected beta-blockers, (iii) steroidal and non-steroidal mineralocorticoid receptor antagonists, and (iv) sodium-glucose cotransporter 2 inhibitors. For various reasons, these drug treatments were first studied in HF patients with a reduced ejection fraction (HFrEF). Subsequently, they have been investigated in HF patients with a preserved left ventricular ejection fraction (LVEF, HFpEF) of mostly hypertensive etiology, and with modest benefits largely assessed on top of background treatment with the drugs already proven effective in HFrEF. Additionally, diuretics are given on symptomatic indications. Patients with HFpEF may have diastolic dysfunction but also systolic dysfunction visualized by lack of longitudinal shortening. Considering the totality of evidence and the overall need for antihypertensive treatment and/or treatment of hypertensive complications in almost all HF patients, the principal drug treatment of HF appears to be the same regardless of LVEF. Rather than LVEF-guided treatment of HF, treatment of HF should be directed by symptoms (related to the level of fluid retention), signs (tachycardia), severity (NYHA functional class), and concomitant diseases and conditions. All HF patients should be given all the drug classes mentioned above if well tolerated.