Most edible marijuana is metabolized by the liver, which then
produces a kind of THC that has a bigger psychedelic punch than
the THC that reaches your blood plasma when you smoke it. So
when you finally feel the edible’s effects, it will likely be
more powerful than what you get from a joint, plus the high will
last much longer, up to 12 hours.
Edibles are split into two categories: foods like cookies,
candies and pills that are metabolized in the liver, as
described above, and products like lollipops, gums, and
sublingual drops that take effect through saliva in your mouth.
The latter type works faster, but the effects might not be as
powerful and will wear off more quickly.