Down to a tea.

In November 1848, Elizabeth Collie, a machinist from Aberdeen was admitted to ALA for 6 months after experiencing delusions, which were attributed to her “excessive use of tea, to which she has always been much addicted”

Source: https://www.facebook.com/NHSGrampianArchives/posts/abuse-of-tea-updatehaving-found-out-the-background-to-alexander-sinclair-who-was/1175189715834284/