ORS vs Sports Drinks vs Nimbu Paani: What to Drink
These three are built for different jobs and get swapped for one another constantly, which is where the trouble starts. ORS is a medical formulation for fluid loss from illness; sports drinks are dilute sugar water for long exercise; nimbu paani is a good everyday drink. Reaching for a sports drink during diarrhoea misses badly.
- WHO-formula ORS has a specific glucose-to-sodium ratio designed to drive water absorption.
- Sports drinks are far lower in sodium and higher in sugar than ORS.
- For diarrhoea or vomiting, use ORS, not a sports drink and not a soft drink.
- For exercise under about an hour, plain water is sufficient for nearly everyone.
- Many Indian “electrolyte” sachets are sugar-dominant and not WHO-formula ORS.
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Why ORS works, which is the interesting part
Oral rehydration solution is one of the most consequential inventions in public health, and the mechanism is elegant. The gut has a transporter that carries sodium and glucose across the intestinal wall together, and water follows them by osmosis.
That means the glucose is not there for energy. It is there to open the door for the sodium, and the water comes with it. Get the ratio right and you can rehydrate someone through the gut even while they have diarrhoea — which is why ORS has saved an enormous number of lives from dehydrating illness.
Get the ratio wrong in the direction of more sugar and the solution becomes hyperosmolar: it draws water into the gut rather than out of it, and can make diarrhoea worse. This is the single most important practical fact here, and it is why a soft drink or a sweet juice is actively the wrong choice for someone with loose motions.
The current WHO formulation is the reduced-osmolarity one, which performs better than the original. It is worth asking for by name.
How the three compare
Drink and what it is built for
| WHO-formula ORS | high sodium, modest glucose, balanced to WHO ratio — illness and significant fluid loss |
| Sports drink | low sodium, higher sugar — prolonged or intense exercise |
| Nimbu paani with salt and sugar | variable, usually low sodium — everyday heat and mild losses |
| Coconut water | good potassium, low sodium — pleasant everyday drink, not a rehydration therapy |
| Plain water | no electrolytes — the default for most situations |
The pattern to take away: ORS is sodium-led and medical. Sports drinks are sugar-led and built for sustained exertion. Everything else is a drink.
Coconut water deserves a specific note because it is widely recommended as a natural ORS. It is a genuinely good drink with useful potassium, but its sodium is low, and sodium is what you lose most of in sweat and in diarrhoea. It is not a replacement for ORS in illness.
Which to use when
- Diarrhoea, vomiting, or fever with poor intake — WHO-formula ORS. This is what it is for.
- Heat exhaustion, heavy sweating, outdoor work in summer — ORS or a properly salted nimbu paani.
- Exercise under about an hour — plain water. Nearly everyone is fine.
- Exercise over an hour, or intense in heat — a sports drink is reasonable, for carbohydrate and some sodium.
- An ordinary hot day — water, nimbu paani, chaas, coconut water, whatever you will drink.
- A hangover — water and food; ORS does no harm but is not necessary.
The case for plain water during short exercise is worth stating clearly, because sports drinks are marketed well past their usefulness. A 45-minute gym session in an air-conditioned room does not deplete you enough to need carbohydrate and sodium replacement. The drink adds sugar you then have to account for.
Read the sachet, because many are not ORS
A large number of products sold in Indian shops as electrolyte powders, energy drinks or “ORS”-styled sachets are not WHO-formula oral rehydration salts. They are typically sugar-dominant with a little sodium and potassium added, and some carry markedly more glucose than the formulation permits.
This matters because people reach for them in exactly the situation where the ratio counts — a child with loose motions — and a hyperosmolar sugary drink can worsen the problem it is being used to treat. FSSAI and paediatric bodies in India have both raised concerns about such products being presented as ORS.
- Look for the words WHO formula or oral rehydration salts, not merely “electrolyte” or “hydration”.
- Check the composition panel lists sodium chloride, potassium chloride, sodium citrate and glucose.
- Be suspicious if sugar is the first and dominant ingredient.
- Mix the whole sachet into exactly the stated volume of water — not stronger, not to taste.
- Buy from a pharmacy rather than a snack aisle if it is for illness.
Mixing concentration is the error most often made at home. Half a sachet in half the water is not the same as a correctly diluted drink if the measurement is careless, and a deliberately stronger mix is worse, not better. The ratio is the entire point of the product.
A nimbu paani worth drinking
For everyday heat, a salted nimbu paani does a perfectly good job and people will actually drink it, which matters more than theoretical optimality.
A glass of water, the juice of half a lemon, a pinch or two of salt, a little sugar or jaggery if you want it, and black salt for flavour. The salt is the part usually left out and the part doing the electrolyte work. The vitamin C is a small bonus and, drunk with food, would help iron absorption — though in practice this is a between-meals drink.
This is not a rehydration therapy and should not be used as one for a sick child. For a hot afternoon, a construction site, a long walk or a cricket match, it is sensible and cheap.
The short version
Illness means ORS, the real WHO-formula kind, from a pharmacy. Long or intense exercise means a sports drink is reasonable. Everything else means water or nimbu paani. And check that what you bought is actually ORS, because a great many sachets that look like it are not.
Where KABO fits in
To be clear about the boundaries: a nutrition shake is not a rehydration therapy and must not be used as one. If someone has diarrhoea or vomiting, they need WHO-formula ORS, and nothing in the KABO range substitutes for it.
What a serving does cover is the recovery meal afterwards, or the breakfast on a long hot working day — 25 g of complete plant protein with 26 vitamins and minerals, taken alongside the water or ORS rather than instead of it.
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Frequently asked questions
Can I give a sports drink instead of ORS for diarrhoea?
No. Sports drinks have too little sodium and too much sugar for that purpose, and a hyperosmolar sugary drink can worsen diarrhoea. Use WHO-formula ORS.
Is coconut water a natural ORS?
Not really. It has useful potassium but low sodium, and sodium is the main electrolyte lost in sweat and diarrhoea. It is a good everyday drink rather than a rehydration therapy.
Do I need an electrolyte drink after a gym session?
Usually not. For sessions under about an hour, plain water is sufficient for nearly everyone. Electrolyte and carbohydrate replacement becomes relevant for longer or intense sessions, especially in heat.
Can I make ORS at home?
The classic home preparation is six level teaspoons of sugar and half a level teaspoon of salt in one litre of clean water. It is far better than nothing in an emergency, but measuring errors are easy and a pharmacy sachet is more reliable.
Sources
- World Health Organization, Healthy diet fact sheet. who.int
- Food Safety and Standards Authority of India, food product standards and labelling. fssai.gov.in
- ICMR-NIN, Dietary Guidelines for Indians (2024). nin.res.in