3294
However , ranitidine was threefold more potent than cimetidine both in acute inhibition studies and in the median maintenance dose needed ( 1 . 2 g per day for ranitidine and 3 . 6 g per day for cimetidine ) .
 Chemical: ranitidine; Chemical: cimetidine; Chemical: ranitidine; Chemical: cimetidine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: ranitidine; Chemical: cimetidine; Chemical: ranitidine; Chemical: cimetidine