It seemed if I could swallow as little of the mucous as possible I was less sick to my stomach. I rinsed, gargled & spit with Schweppes Club Soda continously, went through cases of the stuff. I used the little bottles. Liters would go flat before I could use it up. Seemed to clear the phlegm/mucous temporarily & sooth the throat & mouth. The carbonation is pretty intense, even uncomfortable, but doesn't hurt. The chemo nurses kept telling me to use plain dextromethorphan (Robitussin). It did help, but sometimes it made me sick & I couldn't take it. I broke down & bought my first recliner chair & catnapped upright just to get any sleep at all. It was just a day by day, hour by hour, sometimes minute by minute grind to get through, but she CAN do it! I took lots of antiemetics, anti-nauseau drugs. Lorazepam till it was coming out my ears, but it did help. Others to. Tell everyone about her problems & get some relief. Tell her I did it & so can she. Many, many of us have gone before her & gotten through.