Over the past month, I have been experiencing what I think are heart palpitations, but I don't know. Sometimes after I eat a lot and especially when I'm first lying down for bed it happens. It kind of feels like my heart is dropping inside amidst the beats. Like the feeling you get in the car when you come over the top of a high hill. This causes a great deal of anxiety for me and probably makes it worse.
Palpitations can refer to a fast heart rate, an irregular heart rate, skipped beats or extra beats.
Zyrtec is not known to cause palpitations. Sudafed, however, can definitely cause palpitations. I would suggest stopping this medication. In addition, stress can contribute to palpitations, so relaxation methods may be useful. Other possible causes include caffeine, alcohol, tobacco and illicit drugs.