DEAR DR. ROACH: I am a 73-yearold male with chronic obstructive pulmonary disease (COPD). I pretty much have it under control with medication,but I am still not able to do a whole lot, as I feel shortness of breath easily. But, that is not my main problem! I have a dry mouth from the medication I am taking for it. I am taking Stiolto Respimat inhalation spray. I have tried toothpastes, mouthwashes, sugar-free lemon drops, gargles, etc. Nothing helps. I am having many dental problems due to this dry mouth,and my dentist told me that it will continue, as it is caused by the medication I am taking for COPD. Is there any help for this dry mouth? I am desperate to get this under control and save my teeth. -- J.C.