allergies
"THE REVIEWS ARE TRUE!!! I normally take 12 hour Allegra-D (as needed). 
When I took this  I immediately felt worse, nose wouldn't stop running, got very hot (red), coughing almost like it make it worse. I felt it kick in & got extremely heavy.
My nose felt like I was in the bottom of a pool, swollen, my eyes were puffy, vision impaired, had horrible nightmares, barely woke up when my alarm went off, felt worse than when I went to bed!!! Fatigued all day, bloated, headaches, swollen nose & MASSIVE sinus pressure when I looked down at work, felt like my senses were numb & I wasn't human. Everything everyone listed negative is true. I will NEVER take it again & I'm shocked it still available OTC & do NOT waste your money, it's total FRAUD."