The main dietary sources of vitamin A are liver, milk and diary products, butter, eggs and fish. In plants such as carrot, broccoli, spinach, pumpkin, vitamin is found as ß-carotene (the orange pigment). This vitamin easily dissolves in alcohol and vegetable oils while in water and glycerol not. Heat and UV light can reduce retinoid's (vitamin A) activity because of its decomposition under these factors.
Vitamin A dietary sources are natural path to health while Roaccutane acne treatment is the artificial enrichment of the organism with the purpose of treating acne. Taking the dietary shapes of vitamin A do not bring any overtaking hazard so it is theoretically better to receive it naturally instead of using Roaccutane. In practice this is not applied because of the intake amount control. Vitamin A accumulates in the liver and just 15g of beef of chicken liver contains required daily intake. Here's a list of food containing vitamin A and percentage of Recommended Dietary Allowances of vitamin A per 100g:
-carrot: more than 90%
-broccoli leafs: about 90% (unlike the broccoli, which has 3%)
-butter: 75%
-spinach: 50%
-pumpkin: 40%
-eggs: 15%
Vitamin A dietary sources like turnip leaves, kale, pea, endive, collard and dandelion greens are representatives of green plants containing vitamin A. The fruits and vegetables sources of vitamin A are: sweet potatoes, apricot, winter squash, cantaloupe melon, papaya and mango.