Ciprofloxacin
Fluoroquinolones inhibit bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, preventing bacterial DNA replication and transcription.
Kitchen Food, Drink & Dietary Conflicts
Biochemical interactions with common foods, beverages & cooking ingredientsDo not drink or eat a lot of caffeine-containing products such as coffee, tea, energy drinks, cola, or chocolate. Ciprofloxacin may increase nervousness, sleeplessness, heart pounding, and anxiety caused by caffeine. Drink plenty of water or other fluids while you are taking ciprofloxacin.
Green Tea, Black Tea & Matcha (Tannins & OATP Inhibitors)
Tannins form insoluble macromolecular iron-tannate precipitates, dropping non-heme iron absorption by up to 80%. Catechins additionally inhibit intestinal OATP uptake transporters, drastically reducing bioavailability of beta-blockers (atenolol) and allergy medications (fexofenadine).
Coffee & High-Caffeine Beverages (Espresso, Energy Drinks)
Ciprofloxacin, fluvoxamine, and oral contraceptives inhibit CYP1A2, reducing caffeine clearance by 30-80% and precipitating palpitations, panic, and severe tremors. Caffeine also accelerates gastric motility, impairing bisphosphonate and thyroid absorption.
Dairy Milk, Yogurt & Calcium-Enriched Foods
Divalent calcium binds fluoroquinolone (ciprofloxacin) and tetracycline (doxycycline) antibiotics into unabsorbable ring complexes, reducing systemic antibacterial coverage by up to 90% and causing therapy failure.
Potassium-Enriched Salt Substitutes (NoSalt, Nu-Salt)
Exogenous potassium chloride loads cannot be cleared efficiently when RAAS or renal filtration is modified, risking acute lethal hyperkalemia (>6.5 mEq/L) and ventricular arrhythmias.
Prescription & OTC Drug Interactions (DDI)
Documented pharmacological conflicts & contraindicated co-prescriptionsDietary Supplements, Herbs & Minerals (DNI)
Interactions with over-the-counter vitamins, minerals, and herbal preparationsCalcium, Iron, Magnesium & Zinc Mineral Supplements
Polyvalent metal ions bind the medication into insoluble ring chelates in the gastrointestinal tract, dropping oral absorption by 50% to 90% and causing therapy failure.
Chronotherapy & Meal Administration Protocols
Optimal absorption, meal-timing rules & GI tolerability protocolsFrequently Researched Drug-Substance Combinations
Explore pairwise interaction dossiers and laboratory safety analysesCiprofloxacin and Calcium
Pairwise Clinical Analysis & Safety RatingCiprofloxacin and Milk
Pairwise Clinical Analysis & Safety RatingCiprofloxacin and Iron
Pairwise Clinical Analysis & Safety RatingCiprofloxacin and Dairy
Pairwise Clinical Analysis & Safety RatingCiprofloxacin and Probiotics
Pairwise Clinical Analysis & Safety RatingCiprofloxacin and Caffeine
Pairwise Clinical Analysis & Safety RatingTaking Ciprofloxacin 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.