Vitamin A Recommended Daily, Recommended dietary allowances

Vitamin A is the name for a group of compounds which have the biological activity of retinol. Vitamin A is measured in retinol equivalents (RE) which
allows the different forms of vitamin A to be compared. One retinol equivalent equals 1 mcg of retinol or 6 mcg of beta carotene. Vitamin A is also measured
in international units (IU) with 1 mcg RE equivalent to 3.33 IU.

Men

Women

Pregnancy

Lactation

USA

1000 mcg RE
(3333 IU)

800 mcg RE
(2666 IU)

800 mcg RE
(2666 IU)

+ 500 mcg RE
( + 1666 IU)

UK

700 mcg RE
(2333 IU)

600 mcg RE
(1999 IU)

700 mcg RE
(2333 IU)

950 mcg RE

(3166 IU)

Australia

750 mcg RE
(2499 IU)

750 mcg RE
(2499 IU)

750 mcg RE
(2499 IU)

+ 450 mcg RE
( + 1499 IU)

Vitamin A Recommended DailyThe RDA for vitamin A is based on the amount needed to prevent the eye disease xerophthalmia with an added margin of safety.

Supplements

Cod liver oil is a rich source of vitamin A and is sometimes used to make supplements. Vitamin A palmitate and vitamin A acetate are synthetic forms of vitamin A found in supplements and fortified foods. Vitamin A palmitate can be absorbed in the absence of dietary fat.

Low dose supplementary vitamin A may be beneficial in the elderly and in those who cannot absorb fats. Vitamin A needs may be increased in cases of
trauma, anxiety, stress, alcohol use and smoking.

 
 
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Vitamin A Categories:

Vitamin A
Vitamin A Health
Vitamin A Absorption
Vitamin A Deficiency
Vitamin A Sources
Vitamin A Recommended Daily
Vitamin A Overdose
Vitamin A Interactions
Vitamin A Dangerous

 


 

Other Vitamins:

Vitamin A
Carotenes
Beta carotene
Lycopene
Lutein
Thiamin
Riboflavin
Niacin
Vitamin B6
Folate
Vitamin B12
Biotin
Pantothenic acid
Vitamin C
Vitamin D
Vitamin E
Vitamin K