PROZ4C
Bluelighter
Weed would be the absolute worst thing for me if I was having a rough trip. If the person knows weed and psychedelics is a good mix for them then its ok but if they're inexperienced with the combo I definately wouldnt be giving them weed.
A small to moderate amount of alcohol would be much better.
Marijuana is such a strange drug...
So different for everyone.
For me it makes the visuals kick up 10 fold, but not much else.

I love the Grateful Dead