Dr. Morepen Premium ORS Ready to Drink is a WHO based ORS (Oral Rehydration Salt) formula. Oral rehydration salt is a combination of Dextrose and several essential electrolytes (Sodium Chloride, Potassium Chloride, Sodium Citrate). Drinking ORS restores body fluids and electrolytes lost due to dehydration during Diarrhea, vomiting, muscle cramping, and exertional heat illness or while exercising, usually in hot/humid weather.