An oral rehydration solution replaces the water and sodium diarrhea removes fastest — sports drinks, juice, and soda are not built for it.
Diarrhea drains water and sodium fast, and the drink handed over first often makes things worse. Sports drinks are blended for sweat losses, not diarrheal illness, and their sugar load can push diarrhea harder. An oral rehydration solution (ORS) restores water and sodium in proportions the gut can absorb. What’s left is practical: which sachet, what water, and how much at each stool.
What Should You Reach For First?
Commercial ORS is the first choice for adults and children, and worth keeping in the house. With no ORS on hand, plain water, broth, or another fluid beats waiting.
Sodium and glucose cross the intestinal wall together and water follows, which is why a glucose-based mix has been standard for over 25 years. The current version is reduced-osmolarity ORS — less sugar, lower concentration, absorbed faster than older formulas. Water and sodium matter most, and the CDC’s oral rehydration therapy guidance keeps a glucose-electrolyte solution central for that reason.
Three things not to lean on:
- Sports drinks. Not appropriate for treating diarrheal illness; do not replace losses correctly.
- Juice and soda. High in carbohydrate, low in sodium — can worsen diarrhea.
- Tea and most household drinks. Too little sodium to replace losses.
What To Check On The Label
The deciding detail is sodium and glucose content once mixed. Standard reduced-osmolarity ORS delivers 75 mEq/L sodium and 75 mmol/L glucose per liter of water, and most electrolyte beverages miss that ratio.
Packages labeled oral rehydration salts are formulated to that concentration. Bottles sold as electrolyte or recovery drinks may carry sodium but usually skip the glucose pairing that drives absorption. Sachets also cost less per liter than ready-to-drink ORS.
If you’d rather compare shelves than read back panels, our tested roundup of diarrhea hydration drinks covers what’s actually stocked and costs per dose.
| Drink Type | Replaces Water And Sodium? | Main Drawback |
|---|---|---|
| ORS sachet | Yes — the standard | Needs 1 liter of safe water and careful measuring |
| Ready-to-drink ORS | Yes | Highest cost per dose |
| Water | Fluid only | No sodium or glucose to drive absorption |
| Broth | Fluid plus some sodium | No glucose; salty enough that children refuse it |
| Sports drinks | No | Not appropriate for treating diarrheal illness |
| Juice or soda | No | High carbohydrate can worsen diarrhea |
| Tea or household drinks | No | Low in sodium, often too high in carbohydrate |
How Do You Give ORS, And How Much?
Start ORS as soon as someone is dehydrated and can sit up and drink, in small, frequent amounts — spoonfuls or short sips, not a full glass.
Mixing stronger than the label says does not speed recovery; it can worsen diarrhea. Children need weight-based amounts after every loose stool or vomiting episode:
ORS works at every age, but volume changes with weight. If someone cannot drink enough, or is too drowsy to swallow, get medical help — severe dehydration can require intravenous fluids ORS cannot replace.
The order that works when diarrhea starts tonight:
- Mix one sachet into 1 liter of treated water.
- Offer small sips every few minutes, never a big glass at once.
- Replace each stool or vomit: weight-based amounts for children, another glass for adults.
- Keep going until the person drinks normally and urine runs pale again.
FAQs
Can Adults Drink The Same ORS As Children?
Yes. The solution is identical for every age; only volume changes.
What If Someone Cannot Keep Fluid Down?
Offer tiny amounts instead of a glass — a teaspoon every minute or two often stays down when a larger sip comes back up. If vomiting continues, or the person becomes drowsy, confused, or unable to drink enough ORS, seek medical care. Severe dehydration can need intravenous fluids.
Do Sports Drinks Work In A Pinch?
No. Sports drinks should not be used to treat diarrheal illness. They are low in sodium and high in carbohydrate, so they do not replace losses correctly and the sugar can worsen diarrhea. Plain water or broth is the better emergency fallback until you can buy oral rehydration solution.
References & Sources
- Centers for Disease Control and Prevention. “Rehydration Therapy.” Supports ORS as the preferred treatment and the immediate, small-volume approach.
- World Health Organization. “Oral Rehydration Salts: Production of the New ORS.” Source for the reduced-osmolarity formula at 75 mEq/L sodium and 75 mmol/L glucose.
- Médecins Sans Frontières. “Oral Rehydration Salts (ORS).” Source for weight-based pediatric volumes and the guidance against sports drinks.