Why is my mouth suddenly full of saliva?

Your mouth makes saliva all the time to help with chewing and speaking. Usually, you swallow this saliva without noticing. But sometimes, your mouth might seem full of extra saliva. One reason this can happen is a condition called burning mouth syndrome, where the mouth feels sore or burning and the saliva may change in amount or thickness. Other times, when you eat or drink something very tasty or sour, your mouth might quickly produce more saliva than usual. Also, if you're not swallowing as often—for example, if you're talking a lot or if your swallowing reflex slows down—saliva can build up. Some changes in your body, such as stress or the effects of medication, can also change how much saliva is made. If you suddenly notice a lot more saliva than normal and it bothers you or causes discomfort, you can check your symptoms with our free AI symptom checker to better understand what might be causing it and when you should consider speaking with a healthcare provider.