It bypasses the stomach and intestines. It also bypasses liver metabolism (first-pass metabolism) https://en.wikipedia.org/wiki/Sublingual_administration#Princ

It bypasses the stomach and intestines. It also bypasses liver metabolism (first-pass metabolism) https://en.wikipedia.org/wiki/Sublingual_administration#Principle https://en.wikipedia.org/wiki/Sublingual_administration#Prin... https://en.wikipedia.org/wiki/First_pass_effect https://en.wikipedia.org/wiki/First_pass_effect