5 vitamins supplements stop ( , As you get older, health advice like "drink your milk to grow big and strong" gives way to "take your calcium pills to avoid osteoporosis." taking your. Water-soluble vitamins: -complex vitamin , Table 2 is a summarization of the tolerable upper intake level (ul) for water-soluble vitamins: the dietary reference intake (dri). the ul is defined as the highest. What vitamins? vitamins ? - medical news, What are vitamins? a vitamin is one of a group of organic substances, present in minute amounts in natural foodstuffs, that are essential to normal metabolism.