Thanks everyone. I will try all of the above suggestions. His main concern was the feeling of glass in his throat and I have heard from two members that they have experienced this.

Anxious caregiver.
Squamous cell ca cheek/jawbone/mandible/Stage IV positive lymph nodes.Surgery, Jan 08. Removal of cheek,removal of lymph nodes.Currently undergoing week4 of radiation treatment--to receive 33 treatment in all.Takes Fenyl patch and hydromorphine.