Can long term use of Sinemet (or too much dosage) cause drooling?
Drooling is typically due to progression of Parkinson’s disease and particularly caused by less overall facial/mouth movements. This can be helped by performing daily facial expression, tongue, and voice exercises. Chewing gum or hard candy can also help as it stimulates swallowing reflexes.
For more information:
Go to the Parkinson’s Disease health topic.