Guaifenex and allergist

My daughter has been sick since October for various ailments. She has asthma (no acute attacks), allergies and asthma. She was hospitalized once for pancreatitis and had strep a week later. She was left with fatigue and, after a while experienced pronounced urinary symptoms. Doctor diagnosed "urine retention" and took her off her Zertec. She has also had problems with constipation and headaches. Last week she was tested out the ying yang for nine things including brain tumor and Celiac's disease. After reading this website, I'm thinking that maybe she just needs to go off the guafinex he's been taking twice daily on the advice of her allergist.