Abstract
"Excessive saliva is a common problem in Parkinson's and is due to reduced frequency of swallowing. This placebo-controlled study demonstrates improvement of this troublesome symptom with injection of botulinum toxin type B into the salivary glands. It is more common to treat excessive saliva with drugs that affect the autonomic nervous system, but these can cause side effects such as confusion. Botulinum toxin offers an alternative treatment option."
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