Why do you spit up saliva?

Spitting up saliva can occur for various reasons, including excessive saliva production, irritation in the mouth or throat, or digestive issues like acid reflux. It can also happen when the body is trying to clear irritants or infections. In some cases, it may be a reaction to certain medications or conditions affecting the salivary glands. If it happens frequently or is accompanied by other symptoms, it's advisable to consult a healthcare professional.