While nausea and a watery mouth are usually not a cause for concern, they may be a sign of an underlying condition. They can also be a precursor to vomiting.

A watery mouth is also known as hypersalivation, ptyalism, or sialorrhea.

Nausea is a feeling of discomfort in the stomach that may cause the impulse to vomit. It may increase salivation and swallowing frequency, and cause repulsion to certain types of food.

Nausea may be a sign of indigestion or a side effect of certain drugs. However, if a person frequently experiences nausea, they may consider seeing a doctor to address the underlying causes of their symptoms.

This article reviews nausea and watery mouth, their causes, how to treat them, and when people should contact a doctor.

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A watery mouth and nausea may occur for many different reasons.

While certain conditions require urgent treatment, others may be linked to an underlying chronic condition of the gastrointestinal tract. In this case, people may need to make some adjustments to their diet and lifestyle to improve their symptoms.

Causes of nausea and watery mouth may include:

  • food poisoning
  • food intolerances
  • certain cancer treatments
  • psychological conditions, such as depression, anxiety, and eating disorders
  • gastrointestinal tract disorders, including irritable bowel syndrome (IBS) and peptic ulcers
  • pregnancy
  • side effects of certain drugs
  • labyrinthine disorders, including motions sickness and labyrinthitis
  • heart attack or stroke

Excessive salivation and a watery mouth are linked to nausea.

The feeling of discomfort that nausea may cause could be a sign that a person may have an impulse to vomit in the near future. However, nausea does not always lead to vomiting.

While vomiting could occur in people who have not had any nausea, people may also experience severe nausea for a prolonged period of time without leading to vomiting.

The treatment for a watery mouth and nausea varies depending on the cause.

Sometimes, treating the underlying cause may help improve nausea and watery mouth. For example, this could mean treating a food intolerance.

However, doctors may also prescribe people medications that aim to relieve symptoms.

Medications to treat nausea and watery mouth may include:

  • CIN-102
  • domperidone (Motilium)
  • dopamine receptor antagonists
  • histamine receptor antagonists
  • HT3 and HT4 receptor antagonists

People who have nausea and a watery mouth due to a gastrointestinal underlying condition, such as IBS, may consider making diet and lifestyle changes to improve their symptoms.

If nausea and watery mouth are linked to pregnancy and motion sickness or to a side effect of chemotherapy, people can take ginger supplements. Peppermint oil may also help.

Learn more about home remedies for nausea.

People should contact a doctor if nausea and a watery mouth are interfering with their daily life. A doctor can address the causes of these symptoms and recommend the appropriate treatment.

Individuals should also contact a doctor if they have nausea and vomiting and experience any of the following:

  • vomiting repeatedly for more than a day or two
  • signs of dehydration
  • inability to keep fluids down due to vomiting
  • significant weight loss since the start of the illness

People should seek immediate medical attention if they experience any of the following:

  • sudden, severe abdominal pain
  • severe chest pain
  • bloody vomit
  • green-yellow vomit
  • severe headache
  • high temperature and stiff neck
  • pain when exposed to bright lights

People should also immediately contact emergency services if they think they may have ingested something poisonous.

There are various causes of nausea and watery mouth. While they are typically not a cause for concern, an underlying condition may be causing these symptoms.

People may experience nausea and a watery mouth as a side effect of certain medical treatments or due to food poisoning.

Depending on the cause of nausea and watery mouth, doctors may recommend that people make changes to their diet and lifestyle.