Short answer: Most food poisoning Cabo visitors get, including traveler’s diarrhea, gets better on its own within a few days. The most important step is replacing fluids with small, frequent sips of water or an oral rehydration solution, and resting. See a doctor if you cannot keep fluids down, symptoms last more than two or three days, or you have a high fever. Get urgent care for bloody or black stools, severe belly pain, signs of dehydration such as confusion or very little urine, or if the sick person is a baby, older adult or pregnant.
Stomach upsets are among the most common reasons visitors call a doctor in Los Cabos. A change in food and water, street tacos, buffet dishes left in the heat, seafood, ice and simply eating out every day can all upset the gut. The CDC notes that traveler’s diarrhea is the most predictable travel-related illness. This guide explains what to do, what to eat, which medicines to be careful with and when you need emergency care. It is general information, not a diagnosis. If you are too sick to go out, a doctor can see you at your hotel.
Food poisoning Cabo: common symptoms
Symptoms often start within hours to a couple of days after eating something contaminated. They can include:
- Loose or watery diarrhea
- Nausea and vomiting
- Stomach cramps and bloating
- Mild fever, chills or aches
- Feeling weak, tired and off your food
Bacteria cause most traveler’s diarrhea, but viruses such as norovirus and parasites are also possible. Symptoms from viruses and toxins often settle in one to three days. You can read the full guidance on the CDC Yellow Book page on travelers’ diarrhea.
What to do in the first 24 hours
- Replace fluids. Take small, frequent sips of bottled water or an oral rehydration solution (electrolyte sachets from a pharmacy). For vomiting, try a spoonful or sip every few minutes and slowly increase.
- Rest in a cool room. Skip the sun, alcohol and strenuous activity.
- Eat when you feel ready. Start with simple foods such as rice, toast, crackers, bananas, broth or plain chicken. You do not need to starve yourself.
- Avoid alcohol, very fatty or spicy food and, for some people, dairy until you feel better.
- Wash your hands carefully and do not share towels, as stomach bugs spread easily within a family or group.
- Keep track of how often you are vomiting or having diarrhea, how much you are drinking and how often you pee. This helps a doctor judge how dehydrated you are.
Over-the-counter medicines: use with care
Anti-diarrhea medicines can reduce the number of trips to the bathroom for some adults with mild, watery diarrhea. However, they are not recommended if you have a high fever or blood in the stool, and many are not suitable for young children. Bismuth products are not for everyone, including people allergic to aspirin, some people on other medicines and children. Ask a pharmacist or doctor before taking anything, especially if you are pregnant or have a medical condition.
Do I need antibiotics?
Most mild cases do not. The CDC advises that antibiotics are generally reserved for moderate to severe traveler’s diarrhea, and the decision depends on your symptoms and risks. A doctor evaluates you and prescribes an antibiotic only if it is appropriate. Please avoid buying antibiotics on your own or using leftover tablets; the wrong medicine can cause side effects without helping. Our article on buying medicine without a prescription in Cabo explains the rules.
When to see a doctor
A medical visit is a good idea if any of these apply:
- You cannot keep fluids down for several hours
- Diarrhea or vomiting lasts more than two or three days, or is getting worse
- You have a fever over about 38.5 °C (101.3 °F)
- You feel dizzy, very weak, very thirsty or are peeing much less
- You have diabetes, kidney or heart disease, a weak immune system or take medicines that may be affected
- A child, older adult or pregnant traveler is sick
A house call doctor can examine you at your hotel or villa so you do not have to travel while unwell. If you need a stool or blood test, our lab tests service can collect samples where you are staying, and pharmacy delivery can bring rehydration salts and any prescribed medicine.
Can IV fluids help?
For people who cannot keep liquids down or are moderately dehydrated, a doctor may recommend IV fluids after a health check. Our hydration IV drip is given after a clinician reviews your symptoms and history. Learn more about the warning signs in our guide to dehydration in Cabo.
Red flags that need urgent or emergency care
| Sign | What it may mean | What to do |
|---|---|---|
| Blood in vomit or stool, or black, tarry stools | Possible bleeding or serious infection | Urgent medical care |
| Severe or constant belly pain, or a hard, swollen belly | Possible condition other than food poisoning, such as appendicitis | Emergency care |
| Confusion, fainting, very fast heartbeat, no urine for many hours | Severe dehydration | Call 911 or go to emergency care |
| Blurred or double vision, trouble swallowing or speaking, weakness | Rare toxins, including from some seafood | Call 911 |
| Tingling around the mouth or hot-cold reversal after eating fish | Possible seafood toxin | See a doctor the same day |
| Diarrhea and cramps, drinking well, improving | Uncomplicated traveler’s diarrhea | Fluids, rest and observation |
For serious situations, read our guide to a medical emergency in Cabo as a tourist and our emergency care in Cabo page.
How to lower your risk in Cabo
- Drink bottled or purified water, and ask whether ice is made with purified water.
- Choose food that is freshly cooked and served hot.
- Be careful with raw seafood, salads and fruit you did not peel yourself, especially from places with low turnover.
- Avoid buffet dishes that have been sitting out in the heat.
- Wash your hands or use hand sanitizer before eating.
- Pack oral rehydration sachets so you have them on hand.
Even careful travelers get sick sometimes. It does not mean you did anything wrong, and with the right care most people are back on the beach in a day or two.
Stomach bug ruining your Cabo trip? Message our team on WhatsApp at +52 624 409 5065. Tell us your symptoms and where you are staying, and we will help you decide on the next step. In an emergency, call 911.
Frequently asked questions
How long does food poisoning last in Cabo?
Most cases improve within one to three days. See a doctor if symptoms last longer, get worse or you cannot keep fluids down.
What should I drink with traveler’s diarrhea?
Small, frequent sips of bottled water or an oral rehydration solution. Avoid alcohol until you feel better.
Do I need antibiotics for food poisoning?
Usually not for mild cases. A doctor evaluates moderate or severe symptoms and prescribes an antibiotic only when it is appropriate.
Can a doctor treat food poisoning at my hotel?
Yes. A doctor can assess you in your room, recommend fluids or IV hydration if needed and arrange medicine delivery.
When is food poisoning an emergency?
Seek urgent care for blood in stool or vomit, severe belly pain, confusion, fainting, very little urine, or trouble seeing, swallowing or speaking.