potassium
20 interactions related to potassium
losartan + potassium
Losartan blocks the angiotensin II receptor, lowering aldosterone and reducing the amount of potassium the kidneys excrete. Adding concentrated potassium supplements or potassium-based salt substitutes can push serum potassium toward the hyperkalemic range, which carries cardiac arrhythmia risk in people with kidney impairment, diabetes, or heart failure. Routine monotherapy raises measured potassium only modestly in people with healthy kidneys, but the safety margin narrows once supplements or other potassium-raising drugs are added.
lisinopril + potassium
Lisinopril blocks the renin-angiotensin-aldosterone system, lowering aldosterone and reducing the kidneys' ability to excrete potassium. Adding a potassium supplement or potassium-based salt substitute on top can push blood potassium into a dangerous range (hyperkalemia), especially in older adults or people with reduced kidney function.
hydrochlorothiazide + magnesium
Thiazide diuretics such as hydrochlorothiazide increase urinary magnesium excretion, and a meaningful minority of long-term users become magnesium-depleted. Low magnesium also makes potassium hard to replace and can worsen muscle cramps and heart-rhythm risk.
valsartan + spirulina
Spirulina has a modest blood-pressure-lowering effect in clinical trials and contributes a small amount of potassium. Combined with valsartan, the theoretical concerns are slightly additive blood pressure lowering and a minor contribution to potassium load. At usual supplement amounts neither effect is large, and for people with normal kidney function the combination is generally tolerable.
prednisone + potassium
Prednisone has weak mineralocorticoid activity that promotes potassium loss through the kidneys. With higher doses or prolonged use this can lower blood potassium (hypokalemia), which may show up as muscle weakness, fatigue, cramps, or palpitations. The risk is greatest when other potassium-wasting drugs or licorice are also in the mix.
potassium + magnesium
Magnesium is required for the Na/K-ATPase pump that maintains intracellular potassium, so magnesium deficiency can cause potassium loss that does not correct with potassium alone until magnesium is also replaced. Both minerals independently support healthy blood pressure and cardiac rhythm, though the size of any added benefit from taking them together has not been well studied.
spironolactone + potassium
Spironolactone makes your body hold on to potassium instead of flushing it out. Adding a potassium supplement, salt substitute, or potassium-loaded diet on top of that can push blood potassium to a dangerous level.
hydrochlorothiazide + potassium
Hydrochlorothiazide promotes urinary potassium excretion at the distal convoluted tubule and is a common cause of drug-induced low potassium (hypokalemia). Many patients stay low even with food or supplements, while others on combination blood-pressure regimens face the opposite risk of high potassium if a potassium-sparing drug is added. Either direction can affect heart rhythm, so potassium should be supplemented only under medical guidance with blood monitoring.
furosemide + potassium
Furosemide is a loop diuretic that blocks the sodium-potassium-chloride cotransporter in the kidney, making it one of the most reliable causes of drug-induced low potassium (hypokalemia). Supplementation or potassium-sparing co-therapy is often needed, but adding potassium on your own — especially alongside ACE inhibitors, ARBs, or kidney impairment — can swing levels too high. The combination should always be guided by blood monitoring rather than self-dosing.
alcohol + hydrochlorothiazide
Hydrochlorothiazide and alcohol both lower blood pressure and increase fluid loss, so taking them together can cause additive dizziness, lightheadedness on standing, and fainting. Both can also worsen loss of potassium and magnesium. The interaction is usually manageable at light drinking levels but becomes more significant in older adults, in hot weather, and during illness.
alcohol + digoxin
There is no major direct chemical clash between alcohol and digoxin, but alcohol works indirectly to make digoxin less safe. Alcohol can trigger irregular heart rhythms (so-called holiday heart) and, along with diuretics, deplete potassium and magnesium. Because digoxin has a narrow safety margin, those electrolyte shifts make the heart more sensitive to it and raise the risk of digoxin toxicity. Heavy drinking can also worsen the heart failure digoxin is meant to treat.
licorice tea + digoxin
Licorice (Glycyrrhiza glabra) contains glycyrrhizin, which inhibits the renal enzyme 11-beta-hydroxysteroid dehydrogenase type 2 and produces mineralocorticoid-like potassium loss. The resulting hypokalemia increases the heart's sensitivity to digoxin, raising the risk of digoxin toxicity and dangerous arrhythmias.
hibiscus tea + hydrochlorothiazide
Hibiscus tea and hydrochlorothiazide both lower blood pressure and act as mild diuretics, so together the effect can be additive on blood pressure and on potassium loss. Animal data also suggest hibiscus may raise hydrochlorothiazide blood levels by reducing its renal clearance, though this has not been confirmed in humans.
oranges + ace inhibitors
Oranges and orange juice are rich in potassium, and ACE inhibitors reduce the kidneys' excretion of potassium by suppressing aldosterone. Drinking large daily volumes of orange juice while taking an ACE inhibitor can nudge serum potassium upward. The risk is real but modest for most people; it matters most in those with reduced kidney function, diabetes, or heart failure, or those also taking other potassium-raising medicines or supplements.
potatoes + ace inhibitors
Potatoes are one of the most concentrated dietary sources of potassium, and ACE inhibitors reduce how much potassium the kidneys excrete by lowering aldosterone. Regularly eating large servings of potatoes while taking an ACE inhibitor can nudge serum potassium upward, especially in people with chronic kidney disease, heart failure, or diabetes, or those taking other potassium-raising medicines.
valsartan + potassium
Valsartan is an angiotensin II receptor blocker that suppresses aldosterone, which slows the kidneys' excretion of potassium. The FDA-approved Diovan label warns that potassium supplements and potassium-containing salt substitutes may raise serum potassium to clinically significant levels, particularly in people with reduced kidney function, diabetes, or heart failure.
bananas + spironolactone
Bananas are a well-known high-potassium food, and spironolactone is a potassium-sparing diuretic that makes the kidneys hold onto potassium. Eating large amounts of bananas (and other high-potassium foods) while taking spironolactone can push blood potassium too high (hyperkalemia), which in serious cases can disturb the heart's rhythm.
coconut water + spironolactone
Coconut water is naturally high in potassium and is often consumed in large volumes for hydration. Spironolactone is a potassium-sparing diuretic that reduces the kidneys' ability to excrete potassium. Regular high-volume coconut water consumption alongside spironolactone can raise blood potassium into a dangerous range (hyperkalemia), and at least one published case report links excessive coconut water plus spironolactone to life-threatening hyperkalemia.
bananas + lisinopril
Lisinopril is an ACE inhibitor that reduces aldosterone, so the kidneys hold onto more potassium and serum potassium tends to rise. A diet heavy in high-potassium foods like bananas can add to that load. For most people with normal kidneys this is a small, manageable effect; the risk of clinically meaningful hyperkalemia is greater in those with reduced kidney function, diabetes, heart failure, or who also take potassium-sparing diuretics, potassium supplements, or potassium-based salt substitutes.
avocado + ace inhibitors
Avocado is high in potassium, and ACE inhibitors reduce the kidneys' excretion of potassium by lowering aldosterone. Heavy, regular avocado intake combined with an ACE inhibitor — especially alongside other potassium sources or in people with reduced kidney function — can raise serum potassium toward hyperkalemia.