How much vitamin D should I take based on weight?

This time, the researchers had refined their calculations: they now recommended a daily intake of around 75 IU per one kilogram of body weight, i.e., for an adult weighing 60 kilos, 60 x 75 = 4500 IU (5). Researchers also advise against exceeding a daily dose of 10,000 IU (6, 7).

How do you calculate vitamin D needs?

The calculation for the loading dose is based on the formula published by van Groningen et al (2010) as follows: Vitamin D Loading dose (IU) = 45 multiplied by the desired rise in vitamin D level (target vitamin D level – starting vitamin D level in ng/mL) multiplied by body weight in pounds.

Should I take 5000 IU of vitamin D daily?

Vitamin D recommended intake is at 400–800 IU/day or 10–20 micrograms. However, some studies suggest that a higher daily intake of 1,000–4,000 IU (25–100 micrograms) is needed to maintain optimal blood levels.

How much vitamin D should a 200lb man take?

A person with the same current and target blood level and intake, but who weighs more, like 200 lbs for example, would need a dose of at least 3400 IU/day.

Is 1000 IU of vitamin D per day enough?

Mayo Clinic recommends that adults get at least the RDA of 600 IU. However, 1,000 to 2,000 IU per day of vitamin D from a supplement is generally safe, should help people achieve an adequate blood level of vitamin D, and may have additional health benefits.

How Much Vitamin D Do I Need? SURPRISING

What is the difference between vitamin D and D3?

What's the difference between vitamin D and vitamin D3? There are two possible forms of vitamin D in the human body: vitamin D2 and vitamin D3. Both D2 and D3 are simply called “vitamin D,” so there's no meaningful difference between vitamin D3 and just vitamin D.

What happens if my vitamin D is too high?

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. Vitamin D toxicity might progress to bone pain and kidney problems, such as the formation of calcium stones.

What is the maximum vitamin D intake per day?

If you choose to take vitamin D supplements, 10 micrograms a day will be enough for most people. Do not take more than 100 micrograms (4,000 IU) of vitamin D a day as it could be harmful. This applies to adults, including pregnant and breastfeeding women and the elderly, and children aged 11 to 17 years.

What is the maximum amount of vitamin D3 a person should take?

Vitamin D toxicity can have devastating health effects, which may not show up until months or even years after starting to take high doses. Generally, it's not recommended to exceed the upper limit of safe intake, which is 4,000 IU (100 mcg) per day.

How much vitamin D3 is recommended daily?

In patients with vitamin D levels less than 20 ng/mL, start with 50,000 IUs of vitamin D3 once a week for 6 to 8 weeks. After that, a dose of 800 to 2000 IU per day should be taken to maintain vitamin D levels above 30 ng/mL.

What happens if you take 5000 IU vitamin D?

Vitamin D toxicity can lead to an abnormally high blood calcium level, which can cause nausea, vomiting, constipation, poor appetite, and weight loss. It can also lead to kidney stones and other kidney problems. If you take too much vitamin D it can also damage your liver.

When should I take vitamin D morning or night?

We recommend taking it with a source of quality fat in the morning or when you break your fast. Avoid taking vitamin D in the evening (we'll talk about why below). Since vitamin D is a fat-soluble vitamin—meaning it doesn't dissolve in water—your body can most easily absorb it when you take it with food.

What is the best time to take vitamin D3 5000 IU?

Take vitamin D by mouth as directed. Vitamin D is best absorbed when taken after a meal but may be taken with or without food.

How do you know if your body has enough vitamin D?

Tests for Vitamin D Deficiency

The most accurate way to measure how much vitamin D is in your body is the 25-hydroxy vitamin D blood test. A level of 20 nanograms/milliliter to 50 ng/mL is considered adequate for healthy people. A level less than 12 ng/mL indicates vitamin D deficiency.

What is the correct range for vitamin D?

The normal range of 25-hydroxy vitamin D is measured as nanograms per milliliter (ng/mL). Many experts recommend a level between 20 and 40 ng/mL. Others recommend a level between 30 and 50 ng/mL. The examples above are common measurements for results of these tests.

Is it OK to take vitamin D3 everyday?

Most experts recommend that you shouldn't take more than 4,000 IU of vitamin D a day. When your serum D3 is very low (less than 12 nanograms per milliliter), some may recommend a short course of once-weekly 50,000 IU of vitamin D2 or D3, followed by a usual dose of 600 to 800 IU daily.

What are the side effects of vitamin D3?

Serious side effects of Vitamin D3

Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.

Can you take too much D3?

Research has found that when people took more than 3,600,000 international units (IU) of vitamin D3, they were more likely to experience kidney damage. 5 Note that these levels are orders of magnitude beyond what you'd get from a little time in the sun or the average multivitamin.

Is it better to take vitamin D every day or once a week?

The effect of equivalent oral doses of vitamin D3 600 IU/day, 4200 IU/week and 18,000 IU/month on vitamin D status was compared in a randomized clinical trial in nursing home residents. A daily dose was more effective than a weekly dose, and a monthly dose was the least effective.

Which two vitamins pose the greatest risk of toxicity?

Extra amounts of water-soluble vitamins are typically excreted. The fat-soluble vitamins A and D are the most likely to cause toxicity symptoms if you consume them in high amounts.

How long does it take for vitamin D to work?

How Long Does It Take for Vitamin D to Work? If you have a vitamin D deficiency, you may notice improvements within 4-6 weeks of consistent supplementation. However, that timeframe can vary depending on what your baseline vitamin D levels are.

What prevents vitamin D absorption?

Therefore, conditions that affect the gut and digestion, like celiac disease, chronic pancreatitis, Crohn's disease, and cystic fibrosis, can reduce vitamin D absorption.

Why do doctors prescribe D2 instead of D3?

Vitamin D supplements are available as vitamin D2 (D2) and vitamin D3 (D3). Both versions can be used to treat vitamin D deficiency, but D3 seems to be more effective than D2. Vitamin D2 is still prescribed to people with low vitamin D levels, because it's more readily available in higher doses.

What form of vitamin D is best absorbed?

Vitamin D is best supplemented in the form of D3 (cholecalciferol) – the form produced by the skin in response to sunlight (UVB) exposure. This form must then be converted in the liver (to calcidiol) and then in the kidneys to its active form (calcitriol).

How much vitamin D3 should I take in the winter?

In the winter, in addition to high vitamin D food, adults should take additional vitamin D from foods or supplements to get at least 600 IU per day of vitamin D.