Have a bad cold, taking OTC cough meds, 4hrs as directed, its gettin better but am havin bad diarrhea! Taking Benylin (dextromethorphan) mucus & Night nurse. Side effect?

Peroxide Humidifier. Do you have a cool mist humidifier? Fill it with one bottle of hydrogen peroxide, and two bottles of water. That will give you a 1% aerosolized mist of hydrogen peroxide. The peroxide kills the bugs on contact (virus or bacteria) as you breath in the mist, and breaks down into water and oxygen. You should feel better in a day or two. .