I am back in treatment (chemotherapy) as well and like Don I have a mucus problem. I use tussin, an expectorant, 4 times daily, but I am going to try the club soda.
Darrell

Stage 3, T3,N1,M0,SCC, Base of Tongue. No Surgery, Radiationx39, Chemo, Taxol & Carboplatin Weekly 8 Treatments 2004. Age 60. Recurrence 2/06, SCC, Chest & Neck (Sub clavean), Remission 8/06. Recurrence SCC 12/10/06 Chest.