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.
Experts recommend 600 international units (IU) of vitamin D per day for adults up to age 70, and 800 IU for people 71 and older. If youâre not getting enough from sunlight and food, you may need to take a supplement. You can get vitamin D in multivitamins and also in combination with a calcium supplement, as well as on its own