Coughing up thick mucous since taking Vyvanse. (50mg) X 6months. Could it be the Vyvanse Age 75. weight 130, Diabetic controlled with diet, ADHD, HX of reflux but had Nissen. Surgeon says surgery intact. HTN controlled with medication. No lung disease, no heart disease except HTN. Don t always need medication..must check BP before taking medication daily. No cancer or other known diseases. HX of allergies to Pollen, etc. but to no medication or food. Have been tested for all.