What causes excessive saliva and nausea?

Excessive saliva, or hypersalivation, can be caused by various factors, including oral infections, certain medications, and gastrointestinal issues like acid reflux. Nausea may accompany hypersalivation due to underlying conditions such as anxiety, motion sickness, or gastrointestinal disturbances. Both symptoms can also result from the body's response to toxins, infections, or even pregnancy. If these symptoms persist, it is advisable to consult a healthcare professional for proper diagnosis and treatment.