Dry it and use it as talisman. It's the most mythical plant known to man, producing an even greater erotic sense than other solanaceae's. This plant's toxicity levels are only slightly above the hallucinogenic dose. The control is as less as any ordinary dream, fate takes over and you might not have much recall of certain passages. Everything is taken for granted and experienced as totally normal. Never any OMG moment.
If you're looking for an integral altered state and teleportation to a full (physical) environment try to lay your hands on 'at least 20 full grown peyotes, pure DMT OR the Amanita Muscaria. Anticholinergenics, which the mandrake is, are not something to mess around with. Even the most knowledgeable sorcerors and shamans who live with their naked asses around these plants make fatal mistakes with it resulting in death.
Tropanes incline the head, meaning that if you walk your legs will be as weak as two ropes and even if you stand up straight, it is as your body is leaning towards the ground, looking down on it as a bird. But you'll most likely fall over yourself as soon as you come out of the couch, experiencing bizarre disssociation. Micro cosmology, like seeing the molecules in objects. Full dialoques 'with frank hallucinations (persons, beings), and performing complex pursuits for a while like dressing up but suddenly realising you haven't even begun yet. Seeing an entire world with full formed depth while in reality it's just a wall, the total real seeming scenes appear and dissapear just as random the wind goes. You may feel you're speaking like a genius (while it's urrrghhhh urrrghh) at some points or knowing the answer to ALL for as long as it lasts. You won't be in able to tranfer it to sobriety most likely.
Anyway, leave it alone, here is some reading material outside erowid (from which I assume you have read ALL documents before you're even considering risking your life to experience a delirium)
http://www.angelfire.com/me/absent/daturadose.html
http://www.angelfire.com/indie/anna_jones1/datura.html
http://www.botanical.com/botanical/mgmh/t/thorna12.html
http://www.a1b2c3.com/drugs/jims001.htm
What turned me off from datura (I have never been in delirium mind you) was smoking DMT in the 80 tot 100 mg range, it showed me that I could take things for granted without even deciding my own communication with these entities, and even within those 4 tot 7 minutes I had no recall of certain flashing moments. And DMT is fucking brilliant by the way.
I wouldn't even imagine what 12 tot 24 hours would be in a terrible brown, grey and dark area.