Claritin-D
"I use Claritin D for my seasonal allergies. I started again this May, after taking it for a week I have noticed my heartbeats faster than normal (100's now from 60's) and my blood pressure went up from 110's systolic and 70's diastolic to 140's/90's with headaches. So, I was thinking what's going on with me, I started salad and no salt diet for a week now (lost 5 pounds and feels good), increased my cardio to 45-60mins 4 times a week, cut sodium intake but my Blood Pressure stays high. I started reading about Claritin D and BOOM. This is what is causing my blood pressure to rise up! Today, I stopped using it. Sticking to the plain Zyrtec."