Hi hunniebee it could be that what you are taking has large amounts of caffeine! Check the label, often the daytime formulas are full of it. It can set a person w/out a/p into a mania...i.e, hyperactivity, heart palps ect. I used to jokingly call Dayquil "liquid crank" I could not even think of taking it now (post a/p diagnoses) It used to affect me then, no telling what it would do now! Maybe try sticking to sudaphed...or try starting with a children's dose and see how that works. Good luck and read thos labels!
"Courage is not the absence of fear...it is being afraid, and doing it anyway!"