What Causes Vomiting and Diarrhea?

Vomiting & Diarrhea

Vomiting and diarrhea (loose, watery bowel motions) are often caused by a gastrointestinal infection – commonly known as a stomach “bug” or “flu” – and lead to the rapid loss of fluid and electrolytes.

Common Symptoms of Vomiting and Diarrhea

Some of the symptoms associated with vomiting and diarrhea include nausea, fever, loose stool, abdominal pains, or bloating. In most cases, vomiting and diarrhea just cause discomfort and many people stop experiencing symptoms after three days. However, when taking Hydralyte to manage dehydration caused by vomiting and diarrhea, it is important to seek medical assistance if:

  • Vomiting or diarrhea continues for more than 12 hours in children under 3 years.
  • Vomiting or diarrhea continues for more than 24 hours in children 3 years to adults.

If you have kidney disease, are taking heart or blood pressure medicine, or are pregnant, discuss with your doctor before taking Hydralyte to help manage vomiting and diarrhea.

Did you know?

Dehydration is the biggest health risk associated with vomiting and diarrhea.

What is stomach flu and what are the symptoms?

The stomach flu is an infection of the gut, which often causes vomiting and diarrhea. It can also cause you to feel tired and have a slight fever.

Viral or bacterial infections are often to blame. You usually catch the stomach flu if you eat or drink food or water that is contaminated with infections (caused by bacteria, viruses or parasites). You can also catch it if you come in contact with a person who is unwell, such as by breathing in vomit particles that spray into the air (they can fly as far as 10 feet!).

Other names for gastrointestinal infections include – gastro, food poisoning, travelers’ diarrhea, stomach bug, stomach flu, gastro distress, gastro flu, norovirus, and Montezuma’s revenge.

An average male can lose up to 3.2 QT (3 L) of fluid during a case of the stomach flu*! This loss of fluid and electrolytes causes mild to moderate dehydration.

*Mild dehydration, 4% fluid deficit, in a 176 lbs adult

Dehydration is the biggest health risk associated with the stomach flu and can occur more quickly for small babies, children, and the elderly. If dehydration becomes severe, you can end up in the hospital on a fluid drip.

Did you know?

Activating your sodium glucose pump is a rapid way to rehydrate? Learn More »

Managing Dehydration related to Vomiting and Diarrhea

With vomiting and diarrhea, the most important step to take is to replenish the fluids and electrolytes your body is losing. By staying properly hydrated, you can relieve some of the mild to moderate symptoms of dehydration.

Avoid foods and drinks that may aggravate your symptoms. Foods that are greasy, high in fat, or very high in fiber can make your diarrhea worse. Try to stay away from dairy products such as milks and cheeses, as your body might have trouble digesting them. Opt for a diet of mainly liquids that you sip slowly, to ensure you stay hydrated.

With Hydralyte’s wide range of great tasting formats and flavors, you can choose your best solution for replacing lost fluid and electrolytes.

Click below for Dosage instructions:

Hydralyte’s oral fluid chart

When managing dehydration in children or the elderly, it may be helpful to track and measure fluid intake and losses.


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