Vitamin A and Beta Carotene

Global Database on Vitamin A Deficiency

World Health Organization.

Provides vitamin A deficiency data by country based on xerophthalmia and/or serum or plasma retinol concentration.


Dietary Supplement Fact Sheet: Vitamin A

DHHS. NIH. Office of Dietary Supplements.


Vitamin A

DHHS. NIH. National Library of Medicine.

Read about the function, sources, and intake recommendations for Vitamin A.


USDA Database of Vitamin A (mcg RAE) and Vitamin E (mg AT) for National Health and Nutrition Examination Survey 1999-2000

USDA. ARS. Food Surveys Research Group.

Vitamin A and E values for 4,311 foods. This database was developed for use with NHANES 1999-2000.


Vitamin A

UMMC. Center for Integrative Medicine.


Vitamin A

OSU. LPI. Micronutrient Information Center.