Vitamin D 50,000 iu

Ingredients
Research supporting vitamin D supplementation has increased dramatically over the past decade and has significantly revitalized interest in this important nutrient. While in the past, vitamin D was recognized mainly for its role in bone health, recent epidemiological and randomized-controlled trials have uncovered relationships between low levels of vitamin D and a number of chronic conditions, including muscle pain and weakness, autoimmune diseases such as type 1 diabetes, colorectal cancer, cardiovascular disease, inflammatory bowel disease, and multiple sclerosis. These significant and widespread findings have prompted new controversy in defining “optimal” serum levels of vitamin D, as well as the doses needed to achieve them.
Many U.S. experts consider 30 ng/mL (75 nmol/L) 25(OH)D to be an optimal of vitamin D, such as Michael Holick, one of the world’s leading researchers on vitamin D, who agrees that 30 ng/mL (75 nmol/L) “is required to maximize vitamin D's beneficial effects for health.”
There are many studies using 50,000 IU and more of vitamin D3 as a loading dose or intermittently (weekly, monthly, etc). These studies show that patients who are severely deficient in vitamin D can often times reach optimal vitamin D levels with high dose vitamin D3 therapy.