Hi Cheryl, I used regular chap-stick (and still do) I also used Biotene mouthwash just to "wet my mouth. If he dosn't have a humidifier, get one. It helps with all the dry things (mouth throat etc.)

I can't help with the nausea because I didn't get chemo. The carbonation question is interesting. Some here couldn't do carbonated beverages some could without problems. A few people here have commented that carbonated drinks helped their mucositis. I found them to cause pain.