Can I take Claritin while I'm pregnant and nursing?
It is always best to avoid taking any type of medication during pregnancy, if possible. That said, if allergies or nasal congestion due to upper-respiratory infection are keeping you from sleeping, eating or participating fully in your life, your doctor is likely to consider Claritin to help you cope with your symptoms.
Rest assured that after years of research on animals and humans, Claritin has been classified as safe to use during pregnancy. But even so, I think it is always best to use the minimum required dosage to achieve relief.