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 daily AI of vitamin D to prevent rickets in healthy children and bone pain (osteomalacia) in adults is based on age. Birth through 50 years of age, 200 units (5 mcg); Adults ages 51 to 70, 400 units (10 mcg); Adults greater than 70 years of age, 600 units (15 mcg) daily.