Fortified foods and drinks
Fortified foods are a long-established and safe way of increasing nutritional intake (for example, milk is fortified with vitamin D). It can be difficult for vegans and others who do not tolerate or care for dairy foods, which are the major sources of dietary calcium in the United States, to meet their daily calcium requirements.
These people can benefit from the availability of calcium-fortified foods including soy milk, tofu, whole-grain cereal, and juice (in moderation). Fortified foods, such as cereals, can help you achieve your daily calcium requirements. In fact, certain cereals can contain up to 1,000 mg of calcium per serving (100% of the DV) - and that's before you add milk. Keep in mind, though, that your body can't absorb all of that calcium at once, so spread it out over the day.