Retinol is in the vitamin A family. It or other forms of vitamin A are needed for eye sight, maintenance of the skin, and human development. It is converted in the body to retinal and retinoic acid through which it acts. Dietary sources include fish, dairy products, and meat.
Fruit juice can be helpful for children who are constipated and fruit juice diluted with fluoridated water is a good way to get your child fluoride if he doesn't like to drink plain water. American Academy of Pediatrics. Policy Statement. The Use and Misuse of Fruit Juice in Pediatrics.
Cranberry juice might also be diluted with water and sweeteners in order to soften its acidity. In this case, it might be called cranberry juice cocktail, or a juice drink or nectar. Check the label in order to determine the percentage of cranberry juice included in the drink. While some dilution can make it easier to drink more cranberry juice for those who don't like tart flavors, too much dilution would defeat the purpose by negating health benefits and may add a lot of sugar to the diet.