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A comment on Caffeine and theanine exert opposite effects on attention (2017). Parent comment

Re:Caffeine and theanine exert opposite effects on attention... by cercatrova on Wednesday July 21, 2021 @06:33PM (#27913019)
Buy online, check out the /r/tea wiki [0] and specifically the user vendor list [1]

[0] https://old.reddit.com/r/tea/wiki/faq

[1] https://old.reddit.com/r/tea/wiki/vendors/page_01

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