<prompt> Difference between rantidine cimetidine is -Ranitidine is 5 times more potent than cimetidineCimetidine is 5 times more potent than ranitidine.Ranitidine has androgenic actionRanitidine more markedly inhibits hepatic metabolism  <response>: Ans. is a i.e., Ranitidine is 5 times more potent than cimetidine o 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. 