Comment by drcharris

For those interested, Starbucks publishes caffeine content of all their drinks, which makes a nice baseline for comparison.

A 'tall' filter coffee, which IIRC is 16oz in the US, is 229mg, about equivalent to 3 single espresso shots (page 4 of the link below).

https://globalassets.starbucks.com/assets/E3DA4F2E01A148DD88...