The differences between oral rehydration salts mainly include different ingredients as well as content. Oral rehydration salts are mainly based on sodium chloride, potassium chloride, and dextrose, with some oral rehydration salts choosing to add sodium citrate and some oral rehydration salts choosing sodium bicarbonate. The main ingredients of Oral Rehydration Salt III contain 0.65g of sodium chloride, 0.725g of sodium citrate, 0.375g of potassium chloride, and 3.375g of anhydrous dextrose per bag. The main ingredients of oral rehydration salts I contain 1.75g of sodium chloride, 1.25g of sodium bicarbonate, 0.75g of potassium chloride, 11g of anhydrous dextrose, etc. per bag. Oral rehydration salt Ⅱ contains 0.926g~1.131g of sodium, 0.354g~0.433g of potassium, 1.276g~1.560g of total chlorine, 1.305g~1.595g of sodium citrate, and 9.00g~11.00g of anhydrous dextrose per bag…. Due to the different composition and content, it must be used in accordance with medical advice.