Supplements that contain phytonutrients do have advantages when compared to certain fruits, such as carrots - which can elevate your blood sugar level to a very high level. Phytonutrients found in supplements are the extract of pigments where nutrients are concentrated, meaning that they draw the best from antioxidant foods, leaving the calories and sugar behind. If you can t or don t have access to organic fruits or other sources of antioxidant foods, you should look into nutritional supplements that offer you the phytonutrients you need in your diet. Supplements that contain phytonutrients do have advantages when compared to certain fruits, such as carrots - which can elevate your blood sugar level to a very high level. being unregulated, you should always choose a manufacturer who is GMP compliant. Manufacturers that are GMP compliant will always follow the manufacturing standards of zinc, in order to minimize and quite possibly eliminate the risk of contaminants that you could be getting from the supplement. If you choose your supplement wisely, you shouldn t have to worry about any problems. All About Vitamin A Vitamin A was first discovered back in 1912, by a Polish biochemist named Casimir Funk. He came up with the word vitamine, which was later given the name vitamin. Funk was the first to discover vitamins as we know them today, although vitamin A was actually the first one discovered, hence the letter A in the title of the vitamin. Although calcium supplements are ideal for promoting bone and teeth growth and health, you should always make sure that you can take them before you make the purchase. Those who suffer from lung disease, kidney stones, stomach problems, or diarrhea should always consult with a doctor first to make sure that calcium supplements won t make things worse. For this reason, you should always consult with your doctor and ask for his advice. After a few tests and exams, your doctor will be able to tell you what type of vitamins you should or shouldn t take. In the world of vitamins and supplements, there are many alternative sources that you can take for energy.