This vegan supplement offers three fat-soluble vitamins — vitamins A, D, and K — in a convenient liquid form. Age-related macular degeneration. A large clinical trial showed that people at high risk of advanced age-related macular degeneration reduced their risk of developing the condition by 25 percent by taking a specific combination of vitamins that included beta-carotene. It's not entirely clear what role beta-carotene played. Older adults and postmenopausal people should also consult a healthcare professional before using vitamin A supplements, as some research suggests that higher intakes of vitamin A could contribute to bone loss ( 11, 16). How much vitamin A should I take per day? Any vitamin A your body does not need immediately is stored for future use. This means you do not need it every day. What happens if I take too much vitamin A?

The government recommends all children aged 6 months to 5 years are given vitamin supplements containing vitamins A, C and D every day.However, some individuals may benefit from supplements if they have an increased risk of deficiency. These may include: Vitamin deficiency. Vitamin A deficiency is uncommon in developed countries, where most people get enough vitamin A from their diet. A deficiency in vitamin A can cause fatigue, eye dryness, infertility, and blindness. The easiest way for a person to ensure they receive sufficient vitamin A is from foods. The ODS states that liver, fish, fortified cereals, and dairy products are the most common, vitamin A-rich foods. Foods containing provitamin A include carrots, broccoli, and squash.

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. If you take a supplement that contains vitamin A, do not take too much because this could be harmful. However, cod liver oil tends to be lower in vitamin A than other forms, which may not be suitable for those with a deficiency. Is it okay to take vitamin A every day?Children aged 1 to 4 years old should be given a daily supplement containing 10 micrograms of vitamin D. Antioxidants. AskMayoExpert. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2017.