Best Travelers' Diarrhea Treatments for Symptom Relief

Sources of Bacteria, Prevention, and Medication Types

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Travelers' diarrhea (TD) can turn a trip into a nightmare. Food and water contaminated by germs, also known as pathogens, is not uncommon in certain areas of the world that are popular travel destinations. Consuming even small amounts of these germs can cause loose, watery stool, the main sign of diarrhea, Luckily, treatment options are available.

This article explains symptoms of travelers' diarrhea, how to treat it even when you're far from home, and the best ways to prevent getting infected in the first place.

Woman drinking water in a room
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Symptoms of travelers' diarrhea caused by bacteria or a virus usually appear six to 72 hours after eating or drinking something contaminated. With some types of pathogens, it may take a week or longer for stool to be affected.

Changes in your bowel habits it the main symptoms of diarrhea. At its mildest, diarrhea involves passing loose, watery stool three times a day. In severe cases, you may pass unformed stool 10 or more times a day.

Other symptoms vary depending on the type of bacterial or virus you've been exposed to but may include:

More severe cases of travelers' diarrhea may cause bloody stools.

Should You Go to a Doctor for Travelers' Diarrhea?

See a healthcare provider if your symptoms are accompanied by fever or bloody stools, or they last longer than 48 hours.

Travelers' Diarrhea Causes

The most common cause of travelers' diarrhea is probably poor hygiene (lack of cleanliness) in restaurants. You're most at risk when dining out in areas of Asia, the Middle East, Mexico, Africa, and South and Central America.

Pathogens are usually spread via the fecal-oral route. This means someone with the bacteria or virus excretes the germs in their feces. The feces may not be safely disposed of in a sanitary setting, or the infected person may not properly wash their hands before handling food and beverages. This allows germs to be transmitted to something you put into your mouth.

This cycle of contamination is most common in areas of the world that have specific conditions:

  • Warmer climate that promotes germ growth
  • Poor sanitation (such as open sewage areas)
  • Unreliable refrigeration
  • Little education on safe food handling.

Common Bacterial Pathogens

The most common cause of travelers' diarrhea is bacteria, which are thought to lead to 80% to 90% of cases. These include:

Ingesting these bacterium causes gastroenteritis, which means the stomach and small intestines become inflamed. This leads to diarrhea.

Common Viral Pathogens

Viruses can also be transported via the fecal-oral route. The most common types of viruses that cause diarrhea include:

Viral infections of the digestive system are often referred to as the stomach flu. The illness has no connection to respiratory influenza, but like "the flu" it usually lasts a short period of time.

Other Causes of Diarrhea

In addition to germs in your food and water, you could develop diarrhea from toxins, which cause the common symptoms of food poisoning.

Parasites, or protozoal pathogens, can also cause diarrhea. In these instances, you're more likely to develop symptoms one to two weeks after you've been exposed to the pathogen.


Dehydration is one of the most common complications related to any form of diarrhea. Having multiple bowel movements that release a lot of fluid can cause you to have too little water in your body.

Severe dehydration can lead to problems such as:

  • Fatigue and muscle weakness or pain
  • Headache
  • Dizziness or lightheadedness
  • Increased heart rate and breathing
  • Confusion
  • Kidney Failure
  • Death

Dysentery is a serious condition that can develop from exposure to Shigella or to parasites. It usually causes bloody stool, fever, and extreme dehydration. It can be fatal if it's left untreated. In addition to being picked up from contaminated food or water, the bacteria or parasites that cause dysentery can be passed from person to person in close contact, or you can get it by swimming in unclean water.

Treatment for Travelers' Diarrhea

Getting sick while far from home is more than just inconvenient. The sudden onset and severity of symptoms can be frightening. Often, symptoms will last a few days and resolve on their own, but you may need to manage the condition and take medication.

Fluid Replacement

To manage dehydration, you want to concentrate on getting enough liquids even if you feel like you don't want to put anything in your stomach.

Mild cases of travelers' diarrhea can be managed by drinking any safe fluids. Since tap water may be a source of infection, you need to boil non-bottled water and let it cool before you drink it. You can also drink boiled broth or prepackaged (non-citrus) fruit juice. Sports drinks like Gatorade are good, too, but not essential.

For severe dehydration, an oral rehydration solution may be needed. These are mixes or packaged beverages that contain glucose and electrolytes such as potassium and sodium. You might be able to pack these in your suitcase when you travel or purchase them at a local drug store. Powdered mixes need to be combined with safe drinking water. Pedialyte is an example of an oral rehydration solution for kids.

Sweating can cause dehydration as well. Try to find a cool place out of the sun to rest while you rehydrate.


Antibiotics may be used for travelers' diarrhea caused by bacterial infections. They are usually only prescribed for severe cases. A stool test should be done to identify which antibiotic might work best.

When antibiotics are needed, quinolone antibiotics such as Cipro (ciprofloxacin) are most often used.

A single dose of 750 milligrams (mg) for adults is the typical treatment. Children may be given 20 to 30 mg per kilogram of weight per day.

In some areas, bacteria are resistant to quinolones, which means the medication won't help. This is especially a problem in Southeast Asia. Another antibiotic, azithromycin, might be used in this case although some strains are resistant to it as well.

Upset Stomach Medication

Pepto-Bismol can be used short term to relieve symptoms. However, it may not be effective in small doses, and high doses put you at risk for a health condition called salicylate toxicity. It's not recommended for anyone under 18 years of age because there's a risk of a condition called Reye's syndrome.

Antidiarrheal Agents

It might seem logical to reach for an anti-diarrheal product such as Imodium (loperamide) or Lomotil (diphenoxylate). However, these products should not be used if your diarrhea is related to dysentery or if you see any signs of blood in your stools.

An antidiarrheal agent should only be taken with an antibiotic. When using an antidiarrheal for travelers' diarrhea, it is especially important to keep yourself well-hydrated. Discontinue the product if your symptoms worsen or if you still have diarrhea after two days.

How Long Travelers' Diarrhea Lasts

Most cases of travelers' diarrhea last from one to five days. However, symptoms may linger for several weeks.


To help prevent travelers' diarrhea:

  • Wash your hands with soap and water after going to the bathroom and before eating.
  • At restaurants, only eat foods that are cooked and served hot.
  • Drink beverages from factory-sealed bottles or containers.
  • Don't get ice in your drink since it may be made with contaminated water.

There is evidence that Pepto-Bismol may protect against travelers' diarrhea. Studies have shown a protection rate of about 60%. However, not everyone should take Pepto-Bismol, including those who are pregnant or are 18 years of age and younger.

Don't take antibiotics or antidiarrheal medicine like Pepto-Bismol as prophylaxis—that is, to prevent travelers' diarrhea— unless it's been recommended to you by your healthcare provider.


Bacteria and viruses can live in water and food. These pathogens (germs) are most common in areas where the climate is warm, refrigeration is not reliable, and there isn't proper hand washing or bathroom sanitation. Infection with these pathogens (bacterial or viral) can cause travelers' diarrhea.

Travelers' diarrhea will often resolve on its own once the bacteria or virus is out of your system. However, you may need antibiotics. You may also need to manage symptoms by staying hydrated and using over-the-counter medications. If symptoms last more than a couple of days, you should contact your healthcare provider.

When traveling to regions that have warm climates and relaxed hygiene practices, be sure to take steps to avoid eating or drinking anything that could have pathogens. Drink pre-packed or boiled water and ensure food is handled properly.

Frequently Asked Questions

  • How is travelers' diarrhea treated in pediatric patients?

    It's important to make sure that your child gets enough fluids. Diarrhea can lead to dehydration more quickly in kids than in adults. Check with your healthcare provider if your child has signs of dehydration such as dry mouth, few or no tears when crying, irritability, reduced urination, and drowsiness.

  • What is the best treatment for travelers' diarrhea in pregnancy?

    If you're pregnant, the most important thing to do is make sure you're drinking enough fluids so you don't get dehydrated. Your doctor may suggest using azithromycin if you need an antibiotic. Don't use Pepto-Bismol (bismuth subsalicylate) when pregnant because of risks to the growing fetus.

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9 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
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