What is the difference between a compound and a molecule? A compound is a substance that is composed from two or more different elements. Water (H 2 O), table salt (NaCl), carbon dioxide (CO 2), methane (CH 4) and chlorophyll (C 55 H 72 O 5 N 4 Mg) are a few examples of compounds. They are compounds because they each contain more than one kind of element.
Recommended Daily Intake for Optimal Health. Based on the most recent research, the current recommendation is 35 IUs of vitamin D per pound of body weight. So for a child weighing 40 pounds, the recommended average dose would be 1,400 IUs daily, and for a 170-pound adult, the dose would be nearly 6,000 IUs.
The current recommended intake for vitamin D is 600 International Units (IU) for adults up to age 70 years, and for adults 71 or older the recommendation is 800 IU. Talk to your doctor about your exact vitamin D need, if a supplementation is right for you, the type of supplement and the amount to take daily. There are two forms of supplemental vitamin D: vitamin D2 (generally made from yeast) and vitamin D3 (made from the skins of sheep, cows, pigs and sheepâs wool).