2. ACE Inhibitors and Potassium Supplements

Cardiovascular health requires careful, continuous management, and doctors frequently prescribe angiotensin-converting enzyme inhibitors—such as lisinopril or enalapril—to lower elevated blood pressure and support overall heart function. These medications naturally cause your kidneys to retain potassium rather than excreting it.

While potassium remains vital for proper nerve transmission and muscle function, too much of it leads to a dangerous physiological condition called hyperkalemia. If you take a standalone potassium supplement or heavily consume artificial salt substitutes that contain potassium chloride while on an angiotensin-converting enzyme inhibitor, your potassium levels can spike to highly toxic levels.

High potassium drastically disrupts the delicate electrical signals in your heart, potentially triggering dangerous arrhythmias, severe muscle weakness, or even sudden cardiac arrest. You must routinely check your electrolyte levels through blood tests if you take these blood pressure medications.