Drooling in Parkinson’s happens not because you are making more saliva, but because you swallow automatically less often, so saliva pools in your mouth. BradykinesiaA general slowing of movement. It is the hallmark motor symptom of Parkinson's disease.Learn more slows down and reduces the swallowing you used to do without thinking about it. Figures vary between studies, but it is common enough that more than 70% of people with Parkinson’s are reported to experience it to some degree. It is often dismissed as a minor symptom, yet left alone it can chafe the skin around the mouth or lead you to avoid seeing people — an unexpectedly large effect on daily life and on how you feel about yourself.
It looks different by day and by night
During the day you can consciously keep your mouth closed, but you can’t do that while asleep, and it is common to drool enough to wet the pillow. Sleeping with your head tipped forward, or with your mouth open, can make the pooling worse — so sleeping on your side or adjusting the height of your pillow may help.
What helps
- Try sucking on a sugar-free candy or lollipop. Having something in your mouth triggers the reflex to swallow automatically, so less saliva pools.
- Be conscious of keeping your mouth gently closed. Practicing good posture and sitting position with a physical therapist can help.
- Ask a speech-language pathologist about swallowing training. They can teach exercises that strengthen the throat muscles and increase how often you swallow.
- Take care of the skin around your mouth. Skin that saliva keeps touching reddens and chafes easily, so wipe it gently and often, and apply a moisturizer if you need to.
There are oral medications too
Before botulinum toxin injections, it is common to first try an oral medication that reduces saliva production itself, such as glycopyrrolate. Standard anticholinergic drugs can cause troublesome side effects — a badly dry mouth, constipation, or reduced thinking and memory — but glycopyrrolate barely crosses into the brain, so it is known to cause relatively fewer of those cognitive side effects. That is why it is often considered as a first-line option.
It can be more than just an inconvenience
In one survey, 70 out of 100 people had drooling, and they reported that the symptom genuinely affected their self-esteem, their relationships and how much they took part in social activities. Some people end up avoiding situations where they will meet others, and low mood has been reported as well — so rather than brushing it off as “a small thing everyone deals with,” it matters to describe the problem specifically and ask for help. Frequent drooling is also linked to the risk of aspiration pneumoniaPneumonia caused when food or saliva goes down into the airway instead of the esophagus. The risk can rise when swallowing becomes weaker.Learn more, so it is best not to treat it as purely cosmetic.
When it is severe, botulinum toxin is an option
If the symptom is bad enough to interfere with daily life, you can consider injecting botulinum toxin (Botox) into the salivary glands in the cheek and jaw area to reduce how much saliva is produced. The effect usually lasts about three months and sometimes longer, and the injections can be repeated as needed. One caution: botulinum toxin can also weaken the muscles around the salivary glands, so the decision needs care if you already have trouble swallowing — this treatment does not treat a swallowing disorder itself. In the rare cases where botulinum toxin isn’t effective enough or repeat injections aren’t feasible, low-dose radiation to the salivary glands is sometimes considered, but it is not a commonly used approach.
What you can do now
If drooling is making daily life or going out difficult, don’t put up with it — tell your care team. Depending on the cause and how severe it is, the approaches above can be combined to manage it.
This article is not a substitute for medical diagnosis or treatment. If your symptoms are severe, please talk with your care team.
