Incobotulinum Toxin A (Xeomin®) for Troublesome Sialorrhea in Parkinson's Disease (PD)/Parkinsonism

Twenty units (0.2 ml) of incobotulinum toxin A were injected into each parotid gland and 30 units (0.3 ml) to each submandibular gland for a total dose of 100 units using anatomical landmarks

Sterile, preservative free 0.9% saline, 1 ml, was used as placebo, and injected into the parotid (0.2 ml each) and submandibular (0.3ml each) glands .