WHO ORS contains –
Because of the improved effectiveness of reduced osmolarity ORS solution, WHO and UNICEF are recommending that countries manufacture and use the following formulation in place of the previously recommended ORS solution.

​Composition of reduced osmolarity ORS
Sodium chloride 2.5 g
Potassium chloride 1.5 g
Glucose 20 g
Shift of water from ECF to ICF