This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Difference between rantidine & cimetidine is ? 
Select and explain. 
A. Ranitidine is 5 times more potent than cimetidine, B. Cimetidine is 5 times more potent than ranitidine, C. Ranitidine has androgenic action, D. Ranitidine more markedly inhibits hepatic metabolism
A: Ranitidine is 5 times more potent than cimetidine
Answer: A: Ranitidine is 5 times more potent than cimetidine 
Explanation: Ans. is 'a' i.e., Ranitidine is 5 times more potent than cimetidine Ranitidine has several desirable features compared to cimetidine: 5 times more potent than cimetidine. No antiandrogenic action, does not increase prolactin secretion or spare estradiol from hepatic metabolism - no effect on male sexual function or gynaecomastia. Lesser permeability into brain. Less marked inhibition of hepatic metabolism of other drugs. Overall incidence of side - effects is lower.