Vitamin D3 20,000 IU – 30 Capsules


Vitamin D3 (Colecalciferol) 20,000 IU Capsules giving you 500mcg of D3 100% Vegetarian. This is the best you can get. Halal & Kosher certified. GMP Certified.

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What is vitamin D?

Vitamin D is actually a hormone rather than a vitamin. The body makes most of the vitamin D it needs; only about 10% comes from our food. The action of sunlight on our skin produces a substance called cholecalciferol, which is converted by the liver to calcidiol. This is further converted in the kidneys by the enzyme 1α-hydroxylase to calcitriol, the active form of vitamin D. Calcidiol is considered a good indicator of vitamin D levels and is the form that is usually measured by doctors.

The active form of vitamin D is produced primarily by the kidneys, but there are also a number of other tissues in the body that activate vitamin D. Excess cholecalciferol and calcidiol made during the summer are stored in our fat for use during the winter. Vitamin D modifies the activity of bone cells and is important for the formation of new bone in children and adults. It also regulates calcium levels in the blood by helping the body to absorb calcium from food and by preventing calcium loss from the kidneys. Recently, the role of vitamin D as a potent regulator of other functions throughout the body has emerged, although we are only just beginning to fully understand what these are and the significance for our health.

What happens if I have too little vitamin D?

Vitamin D deficiency is common in the UK, probably due to lifestyle changes and increased concern about sun exposure. If you have too little vitamin D you are unable to maintain an adequate concentration of calcium in your blood for bone growth. This causes rickets in children and osteomalacia in adults. As the role of vitamin D as a regulator of other functions throughout the body has emerged, it has been suggested that a lack of vitamin D is linked to an inability to fight infections effectively; the development of diabetes; certain cancers; multiple sclerosis; depression; heart disease; high blood pressure; and stroke, although the direct relevance and mechanisms underlying these responses remain unknown.

So my recommendation would be to take at least 50,000 IU of Vitamin D3 per week.




When you think of strong bones, calcium often comes to mind. Calcium is the major player when it comes to bone health and increasing bone mineral density, but don’t overlook the importance of vitamin D.

Previous research has shown that vitamin D is a strong stimulator of calcium deposition in bones, making them stronger and healthier. If you’re not getting enough vitamin D, your body begins to slow or stop depositing calcium into bones, eventually drawing calcium out from your bones back into the bloodstream. Over time, this constant cycle of deposit and withdrawal will make your bones weak and at high risk for fractures.


Additionally, vitamin D deficiency is relatively common in athletes and is associated with muscle weakness and atrophy, specifically Type 2 muscle fiber atrophy. Skipping out on this vitamin is just as bad as skipping out on leg day.


The classic function of vitamin D is to increase absorption of calcium to maintain proper bone health, but did you know it has a protective effect on your heart? Recent evidence has demonstrated that individuals deficient in vitamin D are at an increased risk for high blood pressure, heart disease, sudden cardiac death, or heart failure.

Although the exact mechanisms are unclear at this time, it appears that vitamin D can help lower blood pressure, improve vascular compliance (how elastic your arteries are), and improve glycemic control. Save your heart by supplementing with the D!


Type 2 diabetes can lead to some devastating long-term complications, including nerve damage, heart disease, eye damage and vision loss, and kidney failure. Recent evidence suggests that vitamin D may play a significant role in reducing the risk for type 2 diabetes—especially in those who are at an increased risk for this deadly disease.

Several observational studies have shown improvements in beta cell function, insulin sensitivity, and whole-body inflammation with higher levels of vitamin D. A recent study calculated the risk of developing type 2 diabetes according to baseline vitamin D status and found those with the highest baseline levels had a 38 percent lower risk of developing type 2 diabetes compared to those with the lowest vitamin D levels.


Is there anything this vitamin can’t do? Research suggests that sufficient vitamin D levels in adulthood may significantly reduce the risk for many types of cancer, including colon, breast, ovarian, and prostate.

Vitamin D is one of the most potent inhibitors of cancer-cell growth, and reduces the risk of cancer by increasing calcium absorption and cell differentiation, while reducing metastasis (the spread of cancer from one organ to another).

Have I convinced you yet to start supplementing with vitamin D?



How much of this overlooked vitamin should you be getting a day? Currently, the Institute of Medicine Food and Nutrition Board is the governing body that sets guidelines for intakes of all kinds of nutrients, including vitamin and minerals. The recommended daily allowance (or RDA) for vitamin D is currently 600 IU per day for men and women between the ages of 9 and 70.

However, it is likely that this value is an underestimation. The currently established upper intake level is 5,000 IU per day, but research has reported no adverse health effects to taking 7,000 IU per day for up to 12 weeks.

Keep in mind that the RDA value is primarily based off of outcomes centered around bone health, without taking all of the other beneficial things that vitamin D does into account. The take-home point is that you should be much more worried about getting too little vitamin D than too much.

So my recommendation would be to take at least 50,000 IU of Vitamin D3 per week.