Guaifen-C and cotton mouth

I have been taking Guaifen for 3 days for a sinus infection. . .I feel dizzy and dazed from it, and it is making it difficult for me to consentrate and focus at work. It also has made me feel weak and lethargic. . along with cotton mouth and itching all over. My appetite has been surpressed, and I am having trouble resting. It is like my body is tired, but my mind won't settle to sleep.

I took one pill last night..have not slept one minute all night long..have drank about a gallon of water and still have cotton mouth..feel like I drank a quart of tequila and ate a box of salt...dizzy...headache...nervous feeling..wish I had got online and found this sight before last night..I'm out of town for an important meeting that last all day..and have to go to a dinner tonight. They should outlaw this crap...am telling my boss to look at this sight in case I go to sleep in meeting today.. I am not in a good mood...

I was up all night with my heart racing and I felt like horrible. And when I did doze off I would have the worst nightmares. It made my body hurt like I had the flu and the cotton mouth is horrible. I took one pill last night before bed and it is now 12:25pm next day and still feel like I have the flu. This didn't help with my sinus congestion either I had post nasal drip all night and still now. This is a horrible medicine!!

For me, Guaifen's side effect was that I could not sleep. I took it along with an antibotic for a horrible cold I had. When I took it during the day time, I experienced a very dry cotton mouth.