Oral Rehydration Salts · WHO 2002 Formula

The ORS you
actually want
to drink.

WHO guidelines. All of them. Lemon flavour. ReHydra is what ORS should have always been.

Not just another Electral. The WHO updated the formula in 2002. We followed it.

Monthly Bundle · 50 Sachets
Rs. 79.00

50 sachets · 10 boxes · ₹9.98 each

Better formula than Electral. Save ₹250. Delivered home.

The science ↓
WHO 2002 245 mOsm/L Lemon flavour FSSAI certified Made in India
The ORS you actually want to drink.
The ORS you actually want to drink.
The gap most people don't know about

You've been drinking
thewrong ORS.

Most brands · 1984
311
mOsm/L
Standard ORS
× Absorbs slower
vs
ReHydra · 2002
245
mOsm/L
WHO updated formula
✓ Below blood plasma

When you're dehydrated, plain water doesn't replace what you've lost. Most ORS brands still use the 1984 formula — higher osmolarity than blood plasma, slower absorption. The WHO fixed this in 2002. Most brands didn't follow.

Here's what 245 mOsm/L actually means →
🏥
WHO 2002 Formula
Low-osmolarity standard
📋
FSSAI Certified
Lic. 11524999000409
⚗️
245 mOsm/L
Absorbs faster
🍋
Lemon Flavour
Compliance is clinical
🇮🇳
Made in India
Nutracare, Nagpur
ReHydra ORS Product
The formula

Clinical grade.
Human design.

245
mOsm/L
WHO 2002 Standard

Below blood plasma. Absorbs faster.

⬡ WHO updated 2002
5g
→ 250mL
Per sachet

Pre-measured. One sachet, one glass. Done.

🍋 Lemon flavour
Na⁺
75
mmol/L
K⁺
20
mmol/L
Cl⁻
65
mmol/L
Ci
10
mmol/L
Gl
75
mmol/L
5 Electrolytes

WHO-specified ratios. Not approximated.

8/8
WHO Guidelines

Every ORS guideline. All met. No exceptions.

✓ All 8 confirmed
Each 5g sachet dissolved in 250mL water
Glucose (anhydrous) 3.29 g
Sodium chloride 0.63 g
Potassium chloride 0.37 g
Trisodium citrate 0.71 g
Total osmolarity 245 mOsm/L
Not just for diarrhoea

Every time your body
loses more than water.

ORS is for any dehydration. If you're losing sodium and potassium, plain water won't fix it.

Swipe to explore
01
🤒
Primary use
Illness
Diarrhoea, vomiting, fever. Start at the first sign. WHO dosing table on every pack — infants to adults.
02
☀️
Indian summer
Heat & Outdoors
45°C afternoons. Outdoor work. You lose 600–900mg sodium/hour. Water alone can't replace that.
03
✈️
Pack it
Travel
Flights at 10% cabin humidity. Long train journeys. One sachet before you land. Arrive the same person who left.
04
🏃
Recovery
Post-Exercise
Sports drinks give energy. ReHydra restores electrolyte balance. Different jobs. Use the clinical tool for recovery.
Osmolarity analysis · WHO 2002
245 mOsm / L
Below blood plasma · Optimal
Osmolarity comparison · mOsm/L WHO reference range
200245285311330
ReHydra · WHO 2002 245 mOsm/L
Blood plasma · reference ~285 mOsm/L
Standard ORS · 1984 311 mOsm/L
The science — brief

Below blood plasma.
That's the point.

ORS works because sodium activates a co-transporter in your intestinal wall that pulls water into the bloodstream. The WHO discovered that reducing osmolarity below plasma level makes absorption measurably faster — and updated the standard in 2002.

Component Value Unit Status
Sodium
Na⁺ · SGLT1 driver
75
mmol/L
Glucose
Co-transport activator
75
mmol/L
Potassium
K⁺ · intracellular loss
20
mmol/L
Chloride
Cl⁻ · ionic balance
65
mmol/L
Citrate
Trisodium · not bicarbonate
10
mmol/L
From people who've used it

What actually happened.

My 4-year-old drank it without a fight. With Electral I had to force every sip. She had loose motions for two days and ReHydra was the only thing she kept asking for more of.
👩
Priya M.
Mother of two, Pune
Illness recovery · Child under 5
Carried it on my Manali trip. Altitude and dry air drained me by day two. One sachet morning and after the hike — I actually felt normal. Travel kit is incomplete without it now.
🧔
Rohit K.
Software engineer, Bengaluru
Travel · High altitude trekking
I run outdoors in Nagpur summers. I used to cramp badly by km 8. Since switching to ReHydra post-run, I haven't cramped once in 3 months.
🏃
Ananya S.
Marathon runner, Nagpur
Post-exercise · Summer heat
ReHydra ORS
WHO Compliance Score
8/8
All 8 ORS guidelines followed
8/8

We follow WHO guidelines
like no one else.

8 guidelines for oral rehydration therapy. All 8 followed. Not interpreted — followed.

01
245 mOsm/L low-osmolarity
02
Sodium at 75 mmol/L
03
Glucose at 75 mmol/L
04
Potassium at 20 mmol/L
05
Trisodium citrate buffer
06
No added sugar or milk
07
Age-specific dosing on pack
08
Treat and feed protocol
Purpose Healthcare Labs

Oral rehydration,
done properly.

The WHO 2002 low-osmolarity formula in a single 5g sachet. Lemon flavour that goes down even when nothing else will.

ReHydra ORS sachets
245mOsm/L
mOsm/L
5g
Per sachet
250ml
Of solution
See full formulation
Sodium chloride 2.6 g
Trisodium citrate 2.9 g
Potassium chloride 1.5 g
Anhydrous glucose 13.5 g
Per 1L reconstituted solution · WHO 2002 specification
Ships in 24h WHO 2002 FSSAI 10018022007474
FSSAI verified
24-hour dispatch
Discreet pack
Cash on delivery
Side by side

On the same shelf, read the fine print.

What you're paying for, line by line.

ReHydra
WHO 2002 oral rehydration salts
Best overall
Formula
WHO 2002 low-osm
Osmolarity
245 mOsm/L
For diarrhoea
Yes WHO-grade
Flavour
Lemon balanced
per sachet 9.98 save ₹4 vs Electral
Others on the shelf
Electral Equivalent
Same WHO 2002 · 245 mOsm/L · orange / lemon
14
per sachet
Generic ORS Cheapest ORS
Same WHO 2002 · 245 mOsm/L · plain, salty
8
per sachet
Glucon-D Not a substitute
Glucose only · no electrolytes · not for diarrhoea
5
per 25g serve

All ORS brands follow the same WHO 2002 specification. Glucose-only drinks like Glucon-D are not a substitute during diarrhoea or vomiting.

The questions we get most

Good questions, plain answers.

No jargon. Just what you'd ask a pharmacist.

How much water per sachet? Dosage

One sachet dissolved in 250 ml of clean drinking water — about one full glass. Stir until clear and drink within 24 hours of mixing.

Never make it stronger by using less water; the salt-to-water ratio is what makes the formula work.

Mera baccha chhota hai — kya use de sakte hain? Safety

Haan, ORS bachhon ke liye safe hai — actually specially designed for them. Under 2 years: small sips every few minutes, total 50–100 ml after each loose stool. Over 2 years: 100–200 ml after each episode.

Agar baccha 6 mahine se chhota hai ya 24 ghante mein improvement nahi hai — doctor ko zaroor dikhayein.

Electral se kya farak hai? Comparison

Same WHO 2002 low-osmolarity formula — 245 mOsm/L, identical salt composition. Chemistry wahi hai jo global standard hai.

Farak yeh hai: lemon flavour jo nausea mein bhi actually peene laayak hai, aur monthly pack pe up to ₹250 ki bachat.

Rehydron ya Walyte se compare karein toh? Comparison

Rehydron aur Walyte bhi WHO low-osmolarity formula follow karte hain — clinically equivalent maaniye. Sab ka kaam ek hi hai.

ReHydra mein lemon flavour better balance hai (kam meetha, kam namkeen), aur bulk packs pe pricing aksar 20-30% kam padti hai. Final choice taste aur availability pe depend karta hai.

Glucon-D ya Tang ka kaam nahi karega kya? Comparison

Nahi. Glucon-D, Tang, Rasna — yeh sirf glucose drinks hain. Inmein electrolytes (sodium, potassium, citrate) bilkul nahi ya bahut kam hote hain.

Acute dehydration (diarrhoea ya vomiting) mein Glucon-D madad nahi karta — aur situation worsen kar sakta hai. ORS hi proper medical solution hai.

Doctor ko kab dikhana zaroori hai? Safety

Turant doctor dikhayein agar in mein se kuch bhi ho:

  • Stool mein blood
  • Baar-baar ulti (rok nahi paa rahe)
  • Bukhar 102°F se zyada
  • Aankhein andar dhansi hui
  • 8 ghante se urination nahi
  • Bahut zyada sustii ya behoshi

ORS hydration karta hai lekin underlying cause treat nahi karta. 48 ghante se zyada diarrhoea ho toh check karwana zaroori hai.

Liquid IV ya Gatorade se behtar hai? Comparison

Different purposes. Gatorade sports drink hai — high sugar, low electrolytes, designed for athletes doing 60+ min intense activity.

Liquid IV ek premium ORS-style drink hai (similar science), lekin 3-4× zyada mehenga aur Indian markets mein limited availability. ReHydra same WHO formula deliver karta hai — medical-grade, ₹9.98 per sachet pe.

Sugar ya nimbu mila sakte hain taste ke liye? Dosage

Nahi. Sugar, namak, ya nimbu daalne se osmolarity change ho jaati hai aur formula kaam nahi karta — dehydration aur badh sakti hai, especially bachhon mein.

ReHydra mein already lemon flavour hai. Agar taste phir bhi mushkil ho, dheere-dheere sip karein ya thanda karke piyein.

Can I use it for heat and exercise too? Safety

Yes — ORS is excellent for heat exhaustion, post-exercise rehydration, hangovers, and travel fatigue. The electrolyte balance recovers what plain water can't.

For daily fitness use, one sachet post-workout is usually enough. Not a sports drink replacement for high-sugar energy needs.

Still have a question?
Ready when you are

Made for hydration,
made for India.

WHO 2002 formula. Lemon flavour. ₹9.98 per sachet.

Ships in 24h Cash on delivery FSSAI verified