Report Nasal Steroid Spray in Dysautonomia Discussion Posted March 2, 2010 I think something like Afrin could help me a great deal, but I am really super sensitive to anything that increases heart rate. I cannot even drink decaf coffee (the 99.5% decaf kind) because it makes me feel like I drank regular. I am already super super anxious about flying, especially after having symptomatic PSVTs, so my goal when flying is to keep the heart rate as low as possible. It sounds like it is rare that Afrin causes the heart rate to increase, but I usually get the rare side effects. When you guys who use it say that it causes some tachy, is it much? Is it noticeable? How much more do you think the Afrin helps than the steroid? Do you think the steroid alone would ease eustachian tube problems?