What does it mean if you are producing a lot of saliva?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Excessive saliva production, also known as hypersalivation or sialorrhea, is often a normal, protective response your body uses to clean and moisten the mouth. However, producing too much saliva can sometimes signal an underlying health issue, such as acid reflux, oral infections, pregnancy, medication side effects, or neurological conditions.

Because the causes vary widely—from harmless to more serious—it's important to identify what's driving your symptoms before deciding on next steps. Rather than guessing or waiting for symptoms to worsen, taking a few minutes to complete a free, instant, online symptom check can help you better understand potential causes, assess urgency, and guide you toward the right care. It's a fast, private, and evidence-based way to move from uncertainty to clarity.

Reviewed for medical accuracy: 07/15/2026

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Explanation

Your body constantly makes saliva to help you chew, swallow, and keep your mouth moist. When you see a lot of saliva, it can simply be a natural response—like when you smell or think about food, your mouth starts producing more saliva.

The study on saliva secretion shows that different foods and even the way you breathe while sleeping can change how much saliva you produce. In many cases, having extra saliva is perfectly normal. However, if you find that your mouth is unusually full of saliva all the time, it might be your body's way of protecting the mouth if it's feeling irritated or dry. Sometimes, conditions like acid reflux, certain medications, or even neurological issues can cause your body to make more saliva than usual.

Most of the time, extra saliva is not a sign of something serious unless it causes difficulty with eating or swallowing, or if you have other symptoms. If you're worried about it, you can use Ubie's free AI symptom checker to understand your symptoms better and determine whether it's a normal response or if further evaluation is needed.

(References)

Iorgulescu G. Saliva between normal and pathological. Important factors in determining systemic and oral health. J Med Life. 2009 Jul-Sep;2(3):303-7. PMID: 20112475; PMCID: PMC5052503.
Bozorgi C, Holleufer C, Wendin K. Saliva Secretion and Swallowing-The Impact of Different Types of Food and Drink on Subsequent Intake. Nutrients. 2020 Jan 19;12(1):256. doi: 10.3390/nu12010256. PMID: 31963804; PMCID: PMC7019672.
Thie NM, Kato T, Bader G, Montplaisir JY, Lavigne GJ. The significance of saliva during sleep and the relevance of oromotor movements. Sleep Med Rev. 2002 Jun;6(3):213-27. doi: 10.1053/smrv.2001.0183. PMID: 12531122.

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