23 key nutrients including vitamin d, great value for your money, from just 8p per day, easy to swallow, 1-a-day broad spectrum multi, for all teens (13 years+) this is a broad spectrum multi supplying the most important micronutrients at 100% of nrv. it can be taken by all adult age groups & we think it makes a good insurance policy for teenagers (13 years+) & young adults.growing teens & twenties need plenty of nutrients to cope with continued growth, highly active lifestyles & diets which are often based on fast convenience & rushed meals. finding time for fresh fruit & vegetables isn't usually a priority for this age group! the a-z multi is a great, lower priced long term product, which contains all the important vitamins & minerals, often at 100% of the nutrient reference value, as well as plenty of iron (14mg) for growing girls & a useful level of antioxidants (a, c & e) for boys.brainb vitamins, zinc & iron which contribute to normal cognitive functionimmunityzinc, selenium, vitamin c & vitamin d which contributes to the normal function of the immune system & healthy inflammatory response.energyiron, b vitamins & magnesium for the reduction of tiredness & fatigueskinvitamin c, zinc, vitamin b 2, selenium & biotin which contributes to the maintenance of normal skin & mucous membranesvisionzinc, vitamin b 2 & vitamin a which contributes to the maintenance of normal visionheartvitamin d, vitamin k & vitamin b 1 for normal cardiac functio