Huh. Technically, that would probably be considered buccal (via the cheek) delivery, but, close enough, right? I had no idea caffeinated gum kicked in significantly faster than pills or drinks.
Yep, good catch. "buccal administration" is a bit more obscure so I often just refer to sublingual unless I know the audience.
Mucosal absorption is definitely way faster than pills (unless you chew them) or drink.
One time a friend and I tried making caffeine patches with DMSO as a transport, and put it on our arms with a cotton ball and tape...NOT PLEASANT. Extreme pruritus and erythema at the administration site. Hoo boy were we alert though. Nowadays the gum is perhaps a bit too fast even, it's easy to overdue and I get palpitations.
Follow me for more horrible ideas and biohacks. /s. I don't actually have a channel for my misadventures and shenanigans...maybe I should?
https://en.wikipedia.org/wiki/Buccal_administration