nasal congestion
"This product worked well for my post nasal drip. But I felt extreme pressure in my sinuses, especially in my ears. I had terrible dry mouth which created a horrible sore throat. Not to mention I took it at night and I got terrible insomnia. I felt jittery and just absolutely horrible. I wish I read these reviews before taking it! No more Claritin D for me. Stick with the regular Claritin."