My mother Jivantrika Shah, Female Age 68 years. She is throwing / spitting saline on every 10 to 20 minutes since September, 2014. She is physically fit i.e. she does not have any BP, Diabetic or such problems. She has depression problem and taking Taxina 2 and Risperidone 1mg Tab of Jhonson & Jhonson on daily basis since more than 15 years. I have consulted our family doctor as well as another doctor of Shalby Hospital, Ahmedabad. However, still she spitting the saline. Would be grateful if you could advise in this regard / prescribed some good medicines ?