After you fill your lungs deeply and exhale the effects come on strong and fast. In 30 seconds you might be asking yourself if you are dead, as you begin to come to the realization you are experiencing the incomprehensible.
You'll become very comfortable and smile ear to ear around the 2 minute mark.
around 5-6 minutes the effects begin to slowly fade away.
10 minutes in and you are basically done, although this state is relative to an extremely power LSD or Mushroom trip, but if fades rapidly.
by 15 minutes you'll be trying to remember what the heck just happened as it fades farther and farther away.
at 20 minutes you will still feel the after glow as well as feeling cleansed in your being.