The following are excerpts from: http://www.vitamindcouncil.org/treatment.shtml
If you refuse to see a physician, or can’t find a knowledgeable one, purchase the 1000 IU/day vitamin D3 cholecalciferol pills that are available over-the-counter in North America or a 5,000 IU capsule. Take an average of 5,000 IU a day, year-round, if you have some sun exposure. If you have little, or no, sun exposure you will need to take at least 5,000 IU per day. How much more depends on your latitude of residence, skin pigmentation, and body weight. Generally speaking, the further you live away from the equator, the darker your skin, and/or the more you weigh, the more you will have to take to maintain healthy blood levels.
Infants and ChildrenInfants and children under the age of one should obtain a total of 1,000 IU (25 mcg) per day from their formula, sun exposure, or supplements. As most breast milk contains little or no vitamin D, breast-fed babies should take 1,000 IU per day as a supplement unless they are exposed to sunlight. The only exception to this are lactating mothers who either get enough sun exposure or take enough vitamin D (usually 4,000–6,000 IU per day) to produce breast milk that is rich in vitamin D. Formula fed babies should take an extra 600 IU per day until they are weaned and then take 1,000 IU a day, as advised below.Children over the age of 1 year should take 1,000 IU per every 25 pounds of body weight per day, depending on latitude of residence, skin pigmentation, and sun exposure. On the days they are outside in the summer sun, they do not need to take any; in the winter they will need to supplement accordingly.Children over the age of 10 years old should follow instructions for adults detailed above.
What’s the proper dosage of Vitamin D for adults & children?
