I m an asthmatic with severe respiratory allergies. I m undergoing immunotherapy (5 yrs) as well as using long acting and rescue inhalers. I was also using Zyrtec but would have shortness of breath and pounding heartbeat, especially after eating. My blood pressure as been consistently 120/80 all of my adult life but recently fluctuates.Also some difficulty with recall lately. I am a 53 yr old male. Is it possible the Zyrtec is causing the pounding heart,blood pressure spikes and recall issues? I ve been using it daily for over a year now.