Answer:
yes Fioricet contains opiates and acetaminophen which will sedate you. you may have to take at least 20 to feel anything.
Just a little FYI.... Fioricet is a barbiturate not an opiate. There is a difference between barbiturates and opiates. Also if you take 20 you probably won't be coherent or alive to feel it anyway. I have taken three Fioricet and felt pretty weird. I don't think it's the kind of drug you want to use to get high on but that's just my opinion.