Thank you. The problem with the suction is that there is such delicate tissue and yet fibrous as well which can be compromising to the already damaged oral cavity. Due to this, the physician advised to only use it towards the front part of the oral cavity. It really did not help my husband and as a retired nurse, helped him as well. The nebulizer didn't help either. We tried meds as well, however, he just recently was given an order for Scopolamine patches so he will try those. I keep my fingers crossed!