Vitamin A, also known as retinol, has several important functions.
Good sources of vitamin A (retinol) include:
You can also get vitamin A by including good sources of beta-carotene in your diet, as the body can convert this into retinol.
The main food sources of beta-carotene are:
The total vitamin A content of a food is usually expressed as micrograms (µg) of retinol equivalents (RE).
The amount of vitamin A adults aged 19 to 64 need is:
You should be able to get all the vitamin A you need from your diet.
Any vitamin A your body does not need immediately is stored for future use. This means you do not need it every day.
Some research suggests that having more than an average of 1.5 mg (1,500 µg) a day of vitamin A over many years may affect your bones, making them more likely to fracture when you're older.
This is particularly important for older people, especially women, who are already at increased risk of osteoporosis, a condition that weakens bones.
If you eat liver or liver pâté more than once a week, you may be getting too much vitamin A.
Many multivitamins contain vitamin A. Other supplements, such as fish liver oil, are also high in vitamin A.
If you take supplements containing vitamin A, make sure your daily intake from food and supplements does not exceed 1.5 mg (1,500 µg).
If you eat liver every week, do not take supplements that contain vitamin A.
Having large amounts of vitamin A can harm your unborn baby. So if you're pregnant or thinking about having a baby, do not eat liver or liver products, such as pâté, because these are very high in vitamin A.
Also avoid taking supplements that contain vitamin A. Speak to your GP or midwife if you would like more information.
You should be able to get all the vitamin A you need by eating a varied and balanced diet.
If you take a supplement that contains vitamin A, do not take too much because this could be harmful.
Liver is a very rich source of vitamin A. Do not eat liver or liver products, such as pâté, more than once a week.
You should also be aware of how much vitamin A there is in any supplements you take.
If you're pregnant or thinking of having a baby:
Women who have been through the menopause and older men, who are more at risk of osteoporosis, should avoid having more than 1.5mg of vitamin A a day from food and supplements.
Having an average of 1.5mg a day or less of vitamin A from diet and supplements combined is unlikely to cause any harm.