Edible weed tends to be much stronger than smoked cannabis.
Anyone who has ever overdone it on the space cakes will know that edible cannabis is a whole different ball game to inhaled weed. In general, the oral route of administration results in a stronger high that can take a little while to set in but tends to linger for considerably longer than the buzz you get from smoking. This is because the THC in edibles is absorbed via the gut rather than the lungs, which means it has to be metabolized before it can continue its journey to the brain.
How edibles work
– Read the entire article at IFL Science.