Doctor I Have Very Thick Sticky Saliva. It Wraps Around

Doctor I have very thick sticky saliva. it wraps around food and I cannot eat. I have lost over 70 lbs in less than a year. I have teeth implants. I am not allergic to the metals. I only take 1 medication for parkinsons carvodopa levodopa. no one seems to know the cause or the cure. I have tried all over the counter mouth wash etc for dry mouth. nothing works. what do I do?