The only person who can truthfully answer this is - a qualified medical professional !
yes
no
Yes
No stupid child you will die.
Yes
If you are suitable to take each individually... Then yes, it's absolutely fine to take them together.
Can you take excedrin pm with kolopin
no it is not safe
It is not recommended, but to be safe, check with your doctor or pharmacist.
only if you want to have a good time.
No, you should not take them together because they are both very habit-forming and can affect your heart and respiration if you get too much.
The three best words you'll get on this question: ASK YOUR DOCTOR!