nasal congestion
"I'm 18 I have a severe sore throat to the point of my tonsils becoming inflamed and to add to that my ears started to hurt! So, I took Claritin D and I understand this is a decongestant so my ears were better but my throat was more dry (that's the side affect I found out later) and I'm up all night! was in bed from 10pm- 4am and now I have a 7 o clock flight great never again!!!"