I think there is a huge demand for supplements that don't contain all the ingredients. For example, I have been recommending that you don't go to the store and buy one vitamin or mineral. Instead, take the supplements you need in the foods you like. There are many supplements you don't need and you will not need. The following is a list of some of the most commonly used vitamins and minerals: Vitamin D - Vitamin D is needed for proper bone health. It also helps the body to use calcium and phosphorus. A deficiency of vitamin D will cause you to get headaches, stomachaches, and diarrhea. It is necessary for your heart and bones. Folate - Folate is necessary for the immune system. It helps your body to fight off the bacteria, viruses and parasites that can cause a number of health issues. It is also necessary for the brain and nervous system. Deficiency can cause memory loss, depression, mental illness, and other health issues. The vitamin is not always the best for everyone, but some people are better off than others. The most common deficiency in the United States is the B12 deficiency. Many people think that eating food rich in vitamin B12 is the best way to get the B12, but this is not true. Food sources of B12 include fish and fortified dairy.