Vitamin A: Reference and Dietary Sources

Concentrations of preformed vitamin A are highest in liver and fish oils. Other sources of preformed vitamin A are milk and eggs, which also include some provitamin A. Most dietary provitamin A comes from leafy green vegetables, orange and yellow vegetables, tomato products, fruits, and vegetable oils.

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Vitamin B1 (Thiamin): Reference and Dietary Sources

Food sources of thiamin include whole grains, meat, and fish. Breads, cereals, and infant formulas in the United States and many other countries are fortified with thiamin. The most common sources of thiamin in the U.S. diet are cereals and bread. Pork is another major source of the vitamin.

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