Oral Rehydration Solution (ORS)

Oral Rehydration Solution (ORS)

Commonly Known As Oral Rehydration Salts

Indications For Use

Oral Rehydration Salts (ORS) Is Primarily Indicated  To Replace The Fluid And Electrolyte Loss As A Result Of Vomiting And/Or Diarrhoea. Also Used In Fluid Depletion & Rehydration Of Patient With Burns.

Recommendation Of WHO

WHO Recommended Reduced Osmolarity Oral Rehydration Solution (Low Na ORS)


Reduced Osmolarity Oral Rehydration Solution (Low Na ORS)
Sodium Chloride
2.6 grams
Potassium Chloride
1.5 grams
Sodium Citrate
2.9 grams
13.5 grams
20.5 grams

Osmolar Concentration

Reduced Osmolarity Oral Rehydration Solution (Low Na ORS)
75 meq/L
20 meq/L
65 meq/L
10 meq/L
75 meq/L
245 mOsmol/L

Available As

The ORS Is Wrapped In An Aluminium Foil-Packet Or In A Paper–Packet

Alternative Brand Name

Electral (Oral Rehydration Salts )-21.8 G Sachet, Electrobion, etc.

Method Of Preparation And Application

The Content Of The Packet Is Dissolved In One Litre Of Drinking Water Which Is Already Boiled And Then Cooled, And Should Be Used Within 24 Hours.
Approximately, 50 mL/kg Of Body Weight Of ORS Is Given In First 4 Hours In Mild Dehydration And 100 mL/kg Of Body Weight Of ORS Is Given In First 4 Hours In Moderate Dehydration.
Severe dehydration needs Intravenous Fluid Therapy.

Principle Of Action Of ORS

Use Of ORS Is Based On Observation That Oral Glucose (2%) Enhances The Intestinal Absorption Of Salt And Water (ATP-Dependent Pump For Sodium Ion Absorption), Even In The Presence Of Diarrhea


ORS Should Be Discontinued And Fluids Replaced Intravenously When Vomiting Is Protracted Despite Proper Administration Of ORS, Signs Of Dehydration Worsen Despite Giving ORS, The Person Is Unable To Drink Due To A Decreased Level Of Consciousness, Or There Is Evidence Of Intestinal Blockage Or Ileus. ORS Might Also Be Contraindicated In People Who Are In Hemodynamic Shock Due To Impaired Airway Protective Reflexes. 

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