Yes, you should be able to take Tylenol PM with food - it is an over the counter drug so its interactions with food and other medications should be minimal provided you are following the printed dosing instructions.
yes
yes
Yes
If you are twelve years or older it is safe to take two tylenol pm's regardless of how much you weigh.
Yes if you want to die
Take Tylenol or Advil. If you want to fall asleep too take Tylenol PM.
Yes, Tylenol PM/cold products contain acetaminophen and antihistamines with or without decongestants, and would be OK to take with the antidepressant Effexor.
yes
There is no hydromorphone in Tylenol PM, just acetaminophen and diphenhydramine.
It's generally not a good idea to mix drugs. Why not take just one drug, Tylenol PM or Advil PM?
Can taking Tylenol PM affect blood pressure?
yes actually it is pretty common for dr's to tell you to take diphenhydramine (the active ingredient in Tylenol pm) with Darvocet or other opioid to counteract the itching side effect of these medicines