Usage History of 'amitriptyline'

The following chart shows how frequently 'amitriptyline' appeared in printed materials over time. For example, the word 'amitriptyline' occurred 6 times in books in 1955 and 9,464 times in 2008. From 1955 to 2008, the word 'amitriptyline' was used a total of 287,575 times in books scanned by Google. See Reference: Google Ngram project.

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