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The U.S. Food and Nutrition Board advises against taking beta-carotene supplements except to treat a vitamin A deficiency. Daily limit guidelines for beta-carotene to follow:
- For teenagers and adults, 6 to 15 mg of beta-carotene supplements (10,000 to 25,000 Units of vitamin A) every day is safe
- For children, 3 to 6 mg of beta-carotene supplements (5,000 to 10,000 Units of vitamin A activity) daily is safe
Vitamin A deficiency, while rare in the United States and other developed countries, is significantly more prevalent in developing countries, especially in children. *