Spironolactone
Comprehensive clinical interaction and dietary monograph for Spironolactone (Spironolactone).
Kitchen Food, Drink & Dietary Conflicts
Biochemical interactions with common foods, beverages & cooking ingredientsFollow your doctor's directions for your meals, including advice for a reduced-salt (sodium) diet and daily exercise program. Avoid potassium-containing salt substitutes while you are taking this medication. Talk with your doctor about the amount of potassium-rich foods (e.g., bananas, prunes, raisins, and orange juice) that you may have in your diet.
Potassium-Enriched Salt Substitutes (Low-Sodium Table Salt)
Provides 500-1400 mg potassium per 1/4 teaspoon. When renal potassium excretion is suppressed by ACE inhibitors, ARBs, or aldosterone antagonists (spironolactone), acute severe hyperkalemia (>6.5 mEq/L) can trigger sudden flaccid paralysis and fatal ventricular fibrillation.
Fresh Orange Juice & Apple Juice (OATP Influx Blockers)
Unlike CYP3A4 inhibitors that increase drug levels, fruit juice bioflavonoids block the enterocyte OATP influx pumps, plummeting absorption of oral fexofenadine (Allegra), ciprofloxacin, and atenolol by 30-70%.
Alcoholic Beverages (Beer, Wine, Spirits)
Multiplies respiratory depression and profound sedation with opioids and sedatives; blocks hepatic lactate uptake with metformin (lactic acidosis); triggers acute disulfiram-like vomiting and tachycardia with metronidazole; and accelerates dose-dumping in extended-release capsules.
Prescription & OTC Drug Interactions (DDI)
Documented pharmacological conflicts & contraindicated co-prescriptionsNSAIDs (Ibuprofen, Naproxen) & Non-Cardioprotective Analgesics
Mechanism: Inhibition of renal vasodilatory prostaglandins (PGI2, PGE2) causes afferent arteriolar vasoconstriction, blunts blood pressure control, and increases risk of acute kidney injury (AKI).
Dietary Supplements, Herbs & Minerals (DNI)
Interactions with over-the-counter vitamins, minerals, and herbal preparationsPotassium Supplements (Potassium Chloride, Gluconate, Citrate)
Direct renin inhibition suppresses downstream aldosterone secretion, preventing physiological urinary potassium excretion. Exogenous potassium supplements directly provoke dangerous serum hyperkalemia.
Chronotherapy & Meal Administration Protocols
Optimal absorption, meal-timing rules & GI tolerability protocolsTake spironolactone suspension consistently either with food or without food each time.
Rationale: Food constituents interfere with gastrointestinal absorption or gastric emptying.
Frequently Researched Drug-Substance Combinations
Explore pairwise interaction dossiers and laboratory safety analysesTaking Spironolactone alongside daily coffee, supplements, or other medications?
Add all your daily medications, foods (Dairy, Spinach, Coffee, Grapefruit), and botanicals (Ashwagandha, Curcumin, Melatonin) into the SafeStack interactive engine to run full multi-way synergy collision analysis in real time.
Data on this clinical monograph is compiled from the U.S. National Library of Medicine (MedlinePlus), openFDA Structured Product Labeling (SPL Section 7 Drug Interactions), the NIH Office of Dietary Supplements (ODS), and Krause and Mahan's Food & Nutrition Care Process.