One pill every two weeks gives you all the vitamin D most adults need

50,000 IU of Vitamin D once every two weeks proven to prevent/treat:

Diabetes + Heart Failure + Chronic Pain + Depression + Autism + Breast Cancer + Colon Cancer + Prostate Cancer + BPH (prostate) + Preeclampsia + Premature Birth + Falls + Cognitive Decline + Respiratory Tract Infection + Influenza + Tuberculosis + Chronic Obstructive Pulmonary Disease + Lupus + Inflammatory Bowel Syndrome + Urinary Tract Infection + Poor Sleep + Growing Pain + Multiple Sclerosis + PMS + Schizophrenia + Endometriosis + Smoking    27 problems
   Note: Once a week also fights: COVID, Headaches, Colds, Fibromyalgia, Asthma, Hives, Colitis etc.

See down this page: Additional health problems fought by 50,000 Vitamin D WEEKLY

33 additional, for a total of 61 health problems fought if take 50,000 IU weekly

Taking one 50,000 IU capsule of Vitamin D3 every two weeks will result in 80% of adults bringing their blood levels to above 40 nanograms/ milliliter in 2-6 months, an optimal level for good health.
You can take 50,000 IU pills daily in the first week and feel the benefits by the end of the week
   Feeling the benefits quickly greatly increases the likelihood that you will continue with supplementation

A 50,000 IU capsule costs as little as 20 cents ($20 retail for a bottle of 100 capsules Amazon US )
The very lowest cost source and highest quality of vitamin D3 50,000 IU capsule = Bio-Tech
You can order it from Amazon US (Amazon has the lowest price, but has a policy to not ship any health care products out of a country)

   *UK company that ships Bio-Tech products to all the European countries

  WLS sells Bio-Tech from the Netherlands to Europe
Many companies on Amazon supply Vitamin D - Sept 2017
Can get 50,000 IU Vitamin D anywhere on the globe

An adult who is not at high risk for vitamin D deficiency can achieve an optimal level with just 8 capsules of 50,000 IU
If at high risk: at least double the number of capsules will be needed for loading and maintenance

Bio-Tech Pharmacal

Status March 28, 2020 - they have stock of the D3-50,000 textVegicap
Bio-Tech makes the only Vitamin D that has ALL of these features:

Opinion: Founder of VitaminDWiki
> 95% of people will get full benefit from Bio-Tech Vitamin D
~50% of people will get full benefit from most of the other brands of vitamin D
   due to poor gut, allergies, unable to take pills, etc,

Alternately, take 4,000 IU daily (instead of 50,000 bi-weekly
   cost is 4X higher, and have 13 more opportunities to forget

Note: The Institute of Medicine says the upper limit is 4,000 IU (average per day)

Additional companies that ship internationally include (Note: customs rarely seem concerned about dose size if small quantities, especially via mail)
Can get 50,000 IU Vitamin D anywhere on the globe 16 companies state weekly dosing as of Nov 2023
Swansons,    Life Extension Foundation    Vitaminshoppe    Nutrition Express - can sort by size or type    Ebay 35,000 listings in Jan 2024

Cofactors should be adjusted- especially if take for many months

Reduce Calcium intake to 500 mg/day (dairy products, food, supplements)
Increase Magnesium supplements to 500 mg/day

Additional Vitamin D references

• VitaminDWiki pages containing "50,000" in title 262 as of Aug 2024
  Every 2 weeks 50,000 IU
• 50,000 IU of Vitamin D once every 2 weeks achieved 40 ng in 3 months – RCT March 2021
• Treating Vitamin D deficiency in senior women – such as 50,000 IU daily for 15 days then twice a month – Review April 2019
• 50,000 IU of vitamin D every two weeks – Jordan conclusion - RCT July 2017
• Vitamin D update – 40-60 ng ideal, 50K biweekly maintenance – Jan 2014
• Insulin resistance during pregnancy improved with 50,000 IU of vitamin D every 2 weeks – RCT April 2013
• Even taking as much as 4200 IU vitamin D 43 percent had less than 30 ng in blood – RCT Jan 2013 need more?
• Monthly vitamin D dosing is better than daily dosing for children and elderly (more likely to be taken) – June 2017
• Vitamin D RCT using 100,000 IU monthly for a variety of health problems – results of ViDA due in 2016

What is an Optimal Level: 40 ng, 50 ng, 60 ng, 80 ng?

• Is 50 ng of vitamin D too high, just right, or not enough
• Optimum Vitamin D level: Evidence for 30 and 40 ng – Grant Aug 2013
• 30 to 50 ng of vitamin D is optimal – Central Europe consensus Sept 2013
• Defining normal level of vitamin D (need 4000-5000 IU) - Heaney Spring 2013
• 40 ng Vitamin D perhaps optimal for reduced mortality – Meta-analysis Jan 2012
• Fewer health problems with higher Vitamin D Levels has the following chart

Loading doses of Vitamin D

• Overview Loading of vitamin D
• 540000 IU before ICU raised vitamin D by 25 ng in 2 days – March 2011

High Risk of having low vitamin D levels

• Obese, Seniors, Pregnant, Shut-in, Dark Skin, very far from the equator, recent surgery/major medical
  avoid the sun, excessive clothing, gut problems, kidney/liver problems, etc.
• High Risk of little Vitamin D category overview with associated searches
• Obese need 2.5 IU of vitamin D per kg to increase 1 ng (about 3.4 X more) – RCT Sept 2013 example of a high-risk group
• 50,000 IU vitamin D weekly increased levels by 52 ng normally, but only 28 ng if obese – Oct 2013

Extremely low Toxicity Note: 50,000 IU is not even toxic if taken daily for 30 days

• Millions of people have taken single dose of 500,000 IU of vitamin D without any problem
• 10,000 IU daily can be taken for years and years. (The body naturally removes any excess)
• Overview Toxicity of vitamin D
• Some indication that too much vitamin D causes problems in hospitals
• 100,000 IU monthly vs placebo RCT Aug 2018
  adverse events in 16% of both Vitamin D and placebo groups: 10.1016/j.clnu.2018.07.034

Use the same 50,000 IU pill monthly for children

• Children no longer get much vitamin D from milk - fortify at home

Other Vitamin D information

• Does Less Sun mean More Disease video tells you WHY vitamin D is needed
• Overview Deficiency of vitamin D
• 258+ Randomized Clinical Trials with non-daily dosing
  Note: very little difference if Vitamin D is taken every day or with 16 X a dose taken every 16 days
• Vitamin D deficiency is a major global public health problem – Maps Nov 2013
• Would you be opposed to my getting more vitamin D
  • How to ask your doctor if you should take more vitamin D
• Overview Rare Allergic reaction to vitamin D
  • Magnesium, wool, oil, etc. About 1 in 300 people, typically due to low level of Magnesium
• Vitamin D3 for Vegans Vegan D3 surprisingly does not cost much more
• Low Cost vitamin D - including liquid and bulk typically 5 cents per 5000 IU
• Overviews at VitaminDWiki
• Proof that Vitamin D Works 93 proofs as of Dec 2021
• Even taking as much as 4200 IU vitamin D 43 percent had less than 30 ng in blood – RCT Jan 2013
• 30 percent of vitamin D sold now has more than 2000 IU - Dec 2012 vs US govt says 600 IU is enough
• How you might double your response to vitamin D
• 85% achieved 20 ng with avg of 3300 IU of vitamin D - oral and injection Aug 2012
• Breastfeeding with daily or monthly doses of vitamin D virtually the same – RCT Dec 2013
• It is OK to miss getting your vitamin D supplement by even a week - just take it when you remember to do so.
• If you have gut problems or poor absorption, you should probably take Vitamin D3 in a more easily absorbable form such as BioMulsion gel
• Alternatives if not swallow pills or not absorb vitamin D
• If you just have a maintenance dosing without loading dose it will take 6-9 months to feel the benefits
• No need to test your vitamin D blood level - But, a test will confirm when you are getting enough Vitamin D
• Many different forms are available
• Oil-based Vitamin D3 has the worst bioavailability – April 2014
• There are many near-term benefits to be felt by having an optimum level of vitamin D
• There is a 4X variability in response between individuals
  The dose sizes on this page may be two times higher or 2 times lower than what you need
• About 5% of the population should not supplement with vitamin D
  generally because Vitamin D increases or decreases the effect of their medications ( Contra-indications )
  When in a hospital, you must make them aware that you have a higher level of vitamin D than most of the population. Virtually all drug doses assume low levels of vitamin D, and high levels can increase/decrease potency by 3X. A Chemo dose, for example, might be decreased by 3X for people with optimal vitamin D, giving you much less trauma, but if not reduced, you might die.
  Review of vitamin D interaction with drugs – Jan 2014
• Let your calendar remind you when to take your supplement - Not have to remember: Which SUNday is this?
• Healthy in Seven Days - Loading dose of Vitamin D – book 2014
  Restocking vitamin D quickly gets you to a good level in less than a week instead of less than a year
• Vitamin D once every two weeks is OK, daily is nice but not required – Aug 2014
• Breastfeeding with daily or monthly doses of vitamin D virtually the same – RCT Dec 2013

33 additional Health Problems fought when taking 50,000 IU Vitamin D weekly

See also

• Take 50,000 IU of Vitamin D weekly for 2-4 months, then get a test - Dec 2021
• Vitamin D supplementation guidelines (adults – 50,000 IU per week) – Feb 2017

Health problems fought by 50,000 IU weekly:or bi-weekly

ADHD,  Anxiety,  Asthma,  Autism,  Back Pain,  BPH (prostate),  Cancer - Breast,  Cancer - Colon,  Cancer - Prostate,  Cardiovascular,  Chronic Obstructive Pulmonary Disease,  Cognitive Decline,  Colds,  COVID,  Depression,  Diabetes,  Endometriosis,  Falls,  Fibromyalgia,  Hashimoto's Thyroiditis,  Hay Fever,  Heart Failure,  Hives,  Hypertension – Pulmonary,  Immune System,  Infant,  Inflammatory Bowel Syndrome,  Influenza,  Kidney Disease,  Knee-Pain,  Lupus,  Migraine,  Multiple Sclerosis,  Muscles - women, Obesity,  Pain - Chronic,  Pain - Growing,  PMS,  Preeclampsia,  Premature Birth,  Respiratory Tract Infection,  Schizophrenia,  Sleep-Poor,  Sleep Apnea,  Smoking,  Sports Performance,  Stroke,  Surgery,  Tonsilitis,  Tuberculosis,  Ulcerative Colitis,  Ulcers – Venous,  Urinary Tract Infection   click here for proof

50,000 IU of Vitamin D - many studies 184+

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