Marinol is crap, they tried to reproduce the same effect you can get from smoking marijuana in its natural form by making that pill but they couldn't because they couldn't put the electron spins together, the sub-atomic quirks and quarks together in the same way a biological enzyme system could put them together(i'm not that smart just saying what Dr.Hornsby said ;P)
I myself have tried the little round orange capsul and didn't feel anything, maybe I didn't take enough from my tolerance i dont know but I wasn't impressed.