After vomiting, you can drink some light salt water in moderation, which helps to replenish electrolytes.
Heavy vomiting can lead to loss of large amounts of digestive fluids containing sodium and potassium ions, which can easily lead to hyponatremia and hypokalemia, and in severe cases can lead to dehydration of the body.
Frequent vomiting can be treated with antiemetic (metoclopramide) therapy while correcting the cause. Symptomatic treatment with rehydration is usually possible, and intravenous fluids (sodium chloride, potassium chloride) can be administered. Drinking some saline water will also help to replenish the body with sodium ions and water.
After frequent and massive vomiting, the dehydration that occurs is mainly isotonic dehydration and hypertonic dehydration. When oral saline is administered, the concentration of saline should not be too high to avoid aggravating dehydration.
When symptoms of vomiting occur, it is recommended to consult a doctor in a timely manner, standardized treatment, drugs need to be used under the guidance of a professional doctor.