The following drugs have Significant drug interactions with digoxin except.: (A) Cholestyramine, (B) Thiazide diuretics, (C) Quinidine, (D) Amlodipine
Answer is D. Amlodipine is a calcium channel blocker. Digoxin cause an increase in accumulation of intracellular Calcium. Hence there is no significant drug interaction with CCBS (REF.Essentials of medical pharmacology KD TRIPATHI 8th ed.)