Yes
Sudafed and Xanax safe together
Yes. You can take them together.
most cough syrups come with an antihistamine - you may not want to take sudafed with another antihistamine. quifenesin is an expectorant. check with your dr.
can i take singular and zicam
no
You die.
Yes
You get pregnant.
If the active ingredient in Allegra on the back of the bottle is the same as the active ingredient on the back of the bottle of sudafed pe, then you should NOT take them together.
It's not a very good idea to take Sudafed while on Cymbalta. They have what is called a "moderate drug interaction". Taking them together can mess with your blood pressure.
No stupid child you will die.