Usage History of 'methenamine'

The following chart shows how frequently 'methenamine' appeared in printed materials over time. For example, the word 'methenamine' occurred 14 times in books in 1919 and 1,320 times in 2008. From 1919 to 2008, the word 'methenamine' was used a total of 78,974 times in books scanned by Google. See Reference: Google Ngram project.

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