Histamine carries its message to a large number of cells by attaching to a special receptor on the cells' surfaces.There are two kinds of histamine receptors, H1 and H2.
The drug is an antihistamine and does not have a stimulatory effect on the heart and blood pressure.
However, Claritin-D products may not be safe for people with high blood pressure.
Also, it is important to remember that your blood pressure may not be adequately controlled, even if you take blood pressure medicine.
Claritin is unlikely to cause an increase in blood pressure. If you have high blood pressure, it is a good idea to check with your healthcare provider before taking Claritin-D.
An antihistamine, it treats runny nose, itchy nose/eyes and sneezing.