This fact is from Drug Interactions in Pharmacology. It is a commonly tested concept in NEET MDS examinations. Understanding this fact is crucial for answering MCQs correctly.
Warfarin plus NSAIDs = increased bleeding risk
Erythromycin plus Warfarin = enhanced anticoagulation
Epinephrine plus TCAs = hypertensive crisis risk
Aspirin plus Warfarin = enhanced bleeding
Ketoconazole plus Midazolam = enhanced sedation
Ciprofloxacin plus Theophylline = toxicity.