See #1 here: http://www.thefreedictionary.com/intoxicated. My advice? Next time, please look it up first, and ask us anything you do not understand of the
definition/s you found.
Student or Learner
Can we say "He is/was intoxicated by alcohol or wine or drugs"?
Wine *is* alcohol.
While technically "intoxicated" can apply to other drugs, it's completely associated with alcohol for me and I expect for many others.
Simply "He was intoxicated" means "He was drunk" (he'd had too much alcohol).
If he was on drugs, you could say "He was high" or "He was stoned" or "He was on someting."
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.