Bananas are high in potassium; Entresto (sacubitril/valsartan) can increase potassium levels, raising the risk of hyperkalemia.
Entresto contains an ARB (valsartan) which reduces potassium excretion by the kidneys.
Bananas are a significant dietary source of potassium. Combining them can lead to dangerously high blood potassium levels (hyperkalemia). Regular blood monitoring and dietary moderation are required.
Entresto (sacubitril/valsartan) works partly by blocking the angiotensin II receptor (valsartan), which decreases aldosterone secretion. Aldosterone normally promotes potassium excretion; therefore, valsartan can cause potassium retention. Bananas contain approximately 400-450mg of potassium per medium fruit. While not strictly forbidden, excessive consumption of high-potassium foods like bananas, oranges, potatoes, and salt substitutes while on Entresto increases the risk of hyperkalemia a potentially fatal condition causing muscle weakness, arrhythmias, or cardiac arrest. Patients should not avoid potassium entirely but must maintain consistent, moderate intake. Routine serum potassium and kidney function tests (typically every 1-3 months after initiation or dose change) are mandatory. Always discuss specific dietary limits with your prescribing cardiologist or a renal dietitian.
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