diuretic
10 interactions related to diuretic
hydrochlorothiazide + calcium
Thiazide diuretics increase renal tubular reabsorption of calcium and reduce urinary calcium excretion, which is therapeutically useful for preventing kidney stones and reducing bone loss. However, this calcium-sparing effect can produce hypercalcemia when combined with high-dose calcium supplements, vitamin D, or in patients with underlying primary hyperparathyroidism.
hydrochlorothiazide + magnesium
Thiazide diuretics increase urinary magnesium excretion and roughly 1 in 5 long-term users develop hypomagnesemia. Low magnesium worsens the hypokalemia that thiazides also cause and can perpetuate refractory potassium depletion.
taurine + lithium
Taurine has weak diuretic and natriuretic activity in the kidney, which can theoretically alter renal clearance of lithium and shift serum lithium concentrations. Because lithium has a narrow therapeutic window and is cleared almost entirely by the kidneys, any agent affecting renal sodium handling can change steady-state levels and increase the risk of toxicity or therapeutic failure.
hydrochlorothiazide + potassium
Hydrochlorothiazide promotes urinary potassium excretion at the distal convoluted tubule and is a leading cause of drug-induced hypokalemia. Many patients still develop low potassium despite supplementation, while some on combination antihypertensives risk the opposite problem if a potassium-sparing agent is added.
alcohol + hydrochlorothiazide
Hydrochlorothiazide and alcohol both lower blood pressure and promote dehydration; combined use causes additive hypotension, dizziness, and orthostatic syncope, especially on standing or in hot weather. The combination also worsens electrolyte loss, particularly potassium and magnesium.
hibiscus tea + hydrochlorothiazide
Hibiscus (Hibiscus sabdariffa) has intrinsic diuretic and antihypertensive activity and animal studies show it increases serum levels of hydrochlorothiazide while reducing its clearance. The combination can produce additive blood pressure lowering and amplified electrolyte loss including hypokalemia.
salt substitute + spironolactone
Most salt substitutes are made primarily of potassium chloride and can deliver 500 mg or more of potassium per quarter teaspoon. Spironolactone is a potassium-sparing diuretic that markedly reduces renal potassium excretion. Combining the two can cause severe, sometimes fatal hyperkalemia.
alcohol + magnesium
Alcohol acts as an acute magnesium diuretic, dramatically increasing urinary magnesium excretion within hours of intake. Chronic drinking depletes body magnesium stores through this renal wasting combined with reduced intestinal absorption, leading to hypomagnesemia in up to 60 percent of heavy drinkers.
bananas + spironolactone
Bananas are a high-potassium food (around 422 mg per medium banana), and spironolactone is a potassium-sparing diuretic that reduces renal potassium excretion. Combining high dietary potassium with spironolactone can cause hyperkalemia, which may trigger dangerous cardiac arrhythmias.
coconut water + spironolactone
Coconut water is naturally high in potassium (roughly 600 mg per cup) and is often consumed in large volumes for hydration. Spironolactone is a potassium-sparing diuretic that reduces renal potassium excretion. Regular high-volume coconut water consumption with spironolactone can cause hyperkalemia, including cases reported in the medical literature.