So what exactly are deliriant drugs you may ask? Deliriant drugs are a class of drugs that cause some pretty scary hallucinations, except for the fact that you don't know you are tripping. Yes, that's right, you do not know you are hallucinating.

With LSD and similar drugs, when your hallucinating, you'll think, "woah, i'm totally tripping balls right now" and will see the visuals and know its from the acid, except with deliriants, you will actually believe whatever you are hallucinating is real, it is impossible to distinguish what is a hallucination verses what is real life, and this can be very scary in the wrong environment.

You WILL NOT FIND any other drugs that produce more vivid, more realistic hallucinations than deliriants will.

Here is a report from Erowid from someone with some experience with this:

"Tony ate some [datura] before his family dinner. He was in my friend Dan's basement smoking a bong. When he passed it, the basement and all the other people disappeared and he was sitting at his dining room table, arm outstretched, while his family stared at him. He had to excuse himself from the table to lock himself in his bedroom."

And this is not some crazy freak reaction, this is literally the effects from the drug when you take it, although this particular person did take a reasonably high dose. Oh and for anyone confused Datura is a plant that contains scopolamine, an active ingredient that causes these deliriant effects, and is a very common way people go about getting the high.