after smoking marijuana the effects are felt within 3-4 minutes as the THC goes into the bloodstream.THe high will last 1-3 hours , peaking at 60 minutes
Ingesting or swallowing will enter the stomach first and then slowly into the bloodstream and finnaly into the brain
this methoud takes longer to achieve a high because it goes into the body through many other organs.
But the high lasts longer 1-4 hours
Tectra Hydro Cannibanol or THC is the main ingrediant in Marijuana that gives people a high.The human brain has THC when we are born called cannabiod receptors
http://en.wikipedia.org/wiki/Cannabinoid_receptor