Apple juice alleviates symptoms of constipation, particularly for children and infants, as its sugars pass through the digestive system unabsorbed. Typical remedies for infant constipation include giving babies between 2 and 4 ounces of apple juice once daily, or 4 to 6 ounces daily for older children.
Apple juice provides relief for constipated children, provided it contains 100 percent juice. Otherwise, levels of sugar concentrations are too low. Apple juice, along with prune and pear juices, are most effective for babies and young children less than 2 or 3 years old. The efficiency of intestines increases with age, giving older children the ability to absorb sugars.