Does sports drink help with diarrhea? It can provide some fluid, but it is usually not the best choice for replacing water and salts lost through frequent watery stools. A pharmacy oral rehydration solution (ORS) is generally a better option, especially if losses are substantial.
Learn how sports drinks compare with ORS, water, and broth, plus how to drink enough without upsetting your stomach. You’ll also find signs of dehydration and guidance on when diarrhea needs medical care.
Does sports drink help with diarrhea?
Sometimes, but it is not the preferred rehydration drink. A sports drink may help you take in fluid if you have mild diarrhea and no ORS available. However, sports drinks are designed to replace fluid and electrolytes lost during exercise, not to treat the larger fluid and salt losses that can happen with diarrhea.
ORS is formulated to help your body absorb water and electrolytes, including sodium. Many sports drinks contain more sugar and less sodium than an ORS. In some people, a high amount of sugar in a drink can draw water into the bowel and make loose stools worse.
A sports drink does not stop diarrhea or treat its cause. It may also be a poor fit if your symptoms are frequent, you are becoming dehydrated, or you cannot keep fluids down. In those situations, use ORS if you can and seek medical advice when symptoms or warning signs call for it.
Sports drinks, ORS, water, and broth compared
The best drink depends on how much fluid you are losing and whether you can eat and drink normally. This table can help you choose:
| Drink | What it provides | Best for | Limitations |
|---|---|---|---|
| Oral rehydration solution | A measured balance of water, salts, and glucose | Replacing fluid and salts lost through diarrhea or vomiting | Mix packets exactly as directed; do not add extra sugar or powder |
| Sports drink | Fluid, some electrolytes, and usually sugar | Mild symptoms when ORS is not available and you can tolerate it | Often has a different sugar-to-sodium balance than ORS; may aggravate loose stools |
| Water | Fluid | Mild diarrhea when you are also eating and replacing salts through food | Does not replace electrolytes on its own |
| Broth | Fluid and salt | Adding fluid and some sodium, especially alongside food | Not a complete substitute for ORS during significant fluid loss |
For an adult with mild diarrhea who is still eating and urinating normally, water alongside ordinary food may be enough. If diarrhea is frequent or you are losing more fluid than you can comfortably replace, choose ORS rather than relying on a sports drink, water, or broth alone.
Why ORS is usually a better choice
ORS contains specific amounts of glucose and salts. In the small intestine, glucose helps the body absorb sodium, and water follows. This makes ORS useful for replacing fluids and electrolytes lost during diarrhea.
Sports drinks are made for people sweating during exercise. Their ingredients and proportions vary by product, and their sugar content may be higher than an ORS. That difference matters because a drink that tastes pleasant is not necessarily the most suitable one for rehydration during illness.
Look for a product labeled oral rehydration solution or an equivalent pharmacy rehydration product. Follow the packet or label directions carefully. Mixing a packet with too little or too much water changes its concentration; do not guess, add juice, or use a sports drink as the mixing liquid unless the product directions specifically say to do so.
How to rehydrate when you have diarrhea
Small, frequent sips are often easier to manage than a large glass at once, particularly if you feel nauseated. Use these steps to make a practical plan:
- Start with small sips. Take a few sips of ORS or another tolerated fluid regularly. If you feel sick, slow down and try again rather than forcing a large amount.
- Replace ongoing losses. Keep drinking after each watery stool. Your needs depend on how much fluid you are losing, your size, and your health, so there is no single amount that fits everyone.
- Keep eating as you are able. Try familiar foods in small portions. Foods such as rice, potatoes, bread, soup, and bananas may feel manageable, but you do not have to follow a restrictive diet if you can tolerate your usual meals.
- Check for signs of dehydration. Notice whether you are urinating less than usual, your urine is dark, or you feel unusually thirsty, dizzy, or weak.
- Get help if symptoms worsen. Seek medical advice for signs of dehydration, persistent vomiting, blood in the stool, severe pain, or other serious symptoms.
A useful detail many people miss: replacing fluid is not about chugging as much as possible. Large amounts at once can be hard to keep down. Frequent sips and correctly mixed ORS are often a more manageable approach.
What should you avoid drinking?
Some drinks can be harder to tolerate during diarrhea or may not replace lost salts well. Pay attention to how you feel after drinking, and avoid anything that clearly worsens your symptoms.
- Very sugary drinks: Sodas, undiluted juice, and some sweetened drinks can add a lot of sugar without providing the right balance of salts. They may worsen loose stools for some people.
- Alcohol: Alcohol can make it harder to stay hydrated and may irritate your digestive system.
- Large amounts of caffeine: Coffee, energy drinks, and some teas can be difficult to tolerate. Cut back if they increase urgency or discomfort.
- Milk, if it makes symptoms worse: Some people temporarily have trouble digesting lactose after a stomach infection. You do not need to avoid dairy automatically; use your symptoms as a guide.
There is no need to stop drinking all but one type of fluid. The key is to replace ongoing losses, choose ORS when diarrhea is causing a meaningful risk of dehydration, and avoid drinks that worsen your symptoms.
Can children drink sports drinks for diarrhea?
Sports drinks are not the first choice for rehydrating a child with diarrhea. A pediatric oral rehydration solution is generally more appropriate because it is formulated for fluid and salt replacement. Ask a pediatrician or pharmacist which product and instructions fit the child’s age and situation.
Do not give an infant water or a sports drink as a substitute for their usual breast milk or formula without medical guidance. Babies and young children can become dehydrated quickly, so contact a clinician promptly if a child is unusually sleepy, has a dry mouth, makes few wet diapers, cannot keep fluids down, or seems to be getting worse.
Older children may be able to take frequent small sips of ORS. Follow the product directions and any advice from the child’s clinician. Do not force large drinks, and do not rely on a sports drink to treat serious fluid loss.
When diarrhea needs medical attention
Most short bouts of diarrhea can be managed with fluids and rest, but some symptoms need prompt attention. Contact a healthcare professional if you notice:
- Blood or black, tarry stool
- Severe or worsening belly pain
- Repeated vomiting that prevents you from keeping fluids down
- Very little urination, fainting, confusion, or severe weakness
- A high fever or symptoms that are getting worse rather than improving
- Diarrhea in an infant, an older adult, or someone with a weakened immune system or serious ongoing health condition
Get medical advice if diarrhea continues or you are unsure whether your symptoms are serious. A clinician can consider the cause, your health history, and whether you need a specific treatment. Do not delay care for severe dehydration signs.
Sports drinks can provide some fluid, but they are not designed to replace diarrhea-related losses as well as ORS. If symptoms are mild, drink fluids you tolerate and keep eating as able; if losses are frequent, choose a properly prepared oral rehydration solution.
Your next step: If you are currently having frequent watery stools, get an ORS from a pharmacy and mix it exactly as directed. Take small, regular sips, and seek medical care if you develop dehydration signs, blood in your stool, severe pain, or persistent vomiting.