Vitamin A

Should the figure for Vitamin A be:

a. solely any figure given for Retinol and nothing else;

b. the Retinol figure plus half the beta-carotene figure*;

c. some other calculation?

* The body converts about half of beta-carotene input into vitamin A.

I think I can now answer my own question.

When entering a new food, use only the retinol figure and ignore beta-carotene for the vitamin A entry.

This is based on something I found on the Harvard Schoo of Public Health site:

"Be careful about getting too much retinol (vitamin A). Don’t go overboard on fortified milk, energy bars, and breakfast cereals, all of which can be high in bone-weakening vitamin A. Many multivitamin makers have removed much or all retinol and replaced it with beta-carotene, which does not harm bones."