Vitamin D experts now believe we need at least 1000 IU’s a day to keep blood levels at a healthy level. Vitamin D3 (“cholecalciferol”) is better ... usually come in doses of 400 to 2000 IU’s per pill.

Previous research has shown that vitamin D deficiency can increase the risk of multiple sclerosis (MS) — and a new study ...

It has over 3,700 5-star reviews on Amazon and each bottle contains roughly 125, 1,000 IU servings, and it only costs $17. While vitamin D3 is usually derived from lanolin, a wax found in sheep's ...

One group of participants took high doses (100,000 IU) of cholecalciferol (vitamin D3) every two weeks for 24 months. In comparison, 74.1% of those who took a placebo experienced those same ...