This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
The following drugs have Significant drug interactions with digoxin except. 
Select and explain. 
A. Cholestyramine, B. Thiazide diuretics, C. Quinidine, D. Amlodipine
D: Amlodipine
Answer: D: Amlodipine 
Explanation: 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.)