Efavirenz, Emtricitabine, and Tenofovir disoproxil fumarate
Comprehensive clinical interaction and dietary monograph for Efavirenz, Emtricitabine, and Tenofovir disoproxil fumarate (Efavirenz, Emtricitabine, and Tenofovir disoproxil fumarate).
Kitchen Food, Drink & Dietary Conflicts
Biochemical interactions with common foods, beverages & cooking ingredientsTalk to your doctor about eating grapefruit and drinking grapefruit juice while taking this medication.
Grapefruit / Pomelo (Citrus paradisi / Citrus maxima)
Destroys enterocyte CYP3A4 enzymes, collapsing first-pass drug metabolism and causing up to 12-fold spikes in bioavailability for oral CYP3A4 substrates (statins, calcium channel blockers, immunosuppressants, PDE5 inhibitors).
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.
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.
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 preparationsChronotherapy & Meal Administration Protocols
Optimal absorption, meal-timing rules & GI tolerability protocolsIt is usually taken once a day with water on an empty stomach (at least 1 hour before or 2 hours after a meal).
Rationale: Food constituents interfere with gastrointestinal absorption or gastric emptying.
Frequently Researched Drug-Substance Combinations
Explore pairwise interaction dossiers and laboratory safety analysesEfavirenz, Emtricitabine, and Tenofovir disoproxil fumarate and Grapefruit
Pairwise Clinical Analysis & Safety RatingEfavirenz, Emtricitabine, and Tenofovir disoproxil fumarate and Grapefruit-juice
Pairwise Clinical Analysis & Safety RatingEfavirenz, Emtricitabine, and Tenofovir disoproxil fumarate and Grapefruit / Pomelo
Pairwise Clinical Analysis & Safety RatingEfavirenz, Emtricitabine, and Tenofovir disoproxil fumarate and Potassium Salt Substitutes
Pairwise Clinical Analysis & Safety RatingEfavirenz, Emtricitabine, and Tenofovir disoproxil fumarate and Alcoholic Beverages
Pairwise Clinical Analysis & Safety RatingTaking Efavirenz, Emtricitabine, and Tenofovir disoproxil fumarate 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.