Learn about the best time of day and way to take vitamin D and if you should consider a supplementing with this nutrient.

Health care professionals need to keep in mind that in general, 100 IU (2.5 mcg) of vitamin D per day can raise the vitamin D blood test only 1 ng/ml or just 2.5 nmol/L after 2 to 3 months.

Ekaterina Goncharova/Getty Images According to a new meta-study, an average supplemental dose of 3,320 IU of vitamin D per day is associated with reduced blood pressure, total cholesterol ...

“When buying a vitamin D drop, you should look for the concentration of vitamin D in each drop, expressed as 'international units' or short-form IU. People need about 600-800 IU on a daily basis. With ...

Edward also revealed that it is possible to obtain too much Vitamin D, and that exceeding 10,000IU per day has been shown to increase the risk of Vitamin D toxicity. 1000-3000 IU of Vitamin D per ...