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Vitamin D The Ideal Dosage Revealed- Part IV

Updated March 20-2020 by Dr Richard Hagmeyer DC, CFMP

The Ideal Dosage of Vitamin D Revealed For Thyroid Patients and Patients with Hashimotos Disease

The ideal dosage of Vitamin D for patients with Thyroid disease and Hashimotos is going to depend on your health and your blood levels of vitamin D.

People who are fighting diseases like thyroid disease and Hashimotos will require higher levels than a person who is generally in good health.

Research in this area is relatively recent, but there are a number of studies demonstrating higher rates of autoimmune disease, as well as a greater rate of autoimmune disease progression, among people with Vitamin D deficiency. Studies have linked Vitamin D deficiency with Multiple Sclerosis, Lupus, Rheumatoid Arthritis, and Type I Diabetes.


Vitamin D The Ideal Dosage Revealed- Part IV 1

How Much Vitamin D Should I Take?

At, we like to see Vitamin D3 levels around 60-90 ng/mL.  We typically retest our patients after 30-60 days depending on the initial base line levels and then tailor the dosage maintain proper levels and avoid toxicity.

If your levels are are in the 30-50 ng/ml, I would recommend taking 5,000 daily IU of a high-quality Vitamin D3 for adults and 2,000 daily IU for children. Retest in 30-60 days.

If your levels are below 30 ng/ml  a good dosage to start with is 10,000 IU per day. Be sure to retest in 30 days and then again 30 days later.

At Dr we carry both vitamin D drops in a micellized form (better absorption) and capsules in my store. For those concerned about bone health, we also cary a vitamin D/K2

Vitamin D3 ensures that calcium is absorbed easily and K2 (MK-7) activates the protein, osteocalcin, which integrates calcium into bone. Without D3 and K2, calcium absorption may not be as efficient.

Vitamin D3 and K2 is also For reduced calcium plaque in arteries

Vitamin K2 (MK-7) activates matrix GLA protein (MGP) to bind excess calcium and promote arterial flow and flexibility.

Vitamin D is a Fat Soluble Vitamin

Since Vitamin D is a fat soluble vitamin it gets stored in our body and too much can build up over time. If you are supplementing with high doses (over 10,000 daily IU), I recommend that you get your blood levels checked every month while supplementing. Levels higher than 10,000 daily IU are rarely needed and can often lead to toxicity if not properly managed.

Symptoms of Excess Vitamin D or Vitamin D Toxicity

The main consequence of vitamin D toxicity is a buildup of calcium in your blood (hypercalcemia), which can cause nausea and vomiting, weakness, and frequent urination. Symptoms might progress to bone pain and kidney problems, such as the formation of calcium stones.

Vitamin D The Ideal Dosage Revealed- Part IV 3

Studies on Vitamin D

One study found that insufficient levels of Vitamin D have been reported in 36% of healthy adolescents and 57% of adults in the U.S.

Other studies estimate that one billion people worldwide have insufficient Vitamin D levels. However, the rate of true Vitamin D deficiency is likely even higher, because new research indicates that the previous recommended levels of Vitamin D were actually too low.

The widespread deficiency of Vitamin D is concerning because it plays an important role in many areas of our health. It contributes to bone strength, heart health, and cancer prevention. Vitamin D also plays an important role in your immune system and can be a determining factor in whether or not you develop an autoimmune disease.

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