Most doctors limit their vitamin D prescriptions to 2,000 IU
The doctors training (incorrectly) told them that any more than 2,000 IU could be toxic
At least one Randomize Controlled Trial had to stop the 2,000 IU leg
because 2000 IU was not providing the healthful outcome that the 4,000 IU leg provided.
See Vitamin D Life
- Myth for 50 years: 2000 IU of vitamin D is toxic - still taught as fact in 2010
The fact was that 2,000 IU of vitamin D per KILOGRAM was toxic if cofactors not balanced - Proof that Vitamin D Works 82 Health conditions treated/prevented with Vitamin D as of May 2018
Most of the proofs used 2000+ IU of vitamin D - Earlier list of proofs sorted by daily average dose
35 of the proofs used 2,000 or more IU of vitamin D - Vitamin D needs in 2004:1000 IU, 10 years later same author says 3,500 IU
- One pill every two weeks gives you all the vitamin D most adults need 3,600 IU daily average
- 400 iu of vitamin D is like 24 seconds of sun in a swimsuit in Los Angeles
- Is 50 ng of vitamin D too high, just right, or not enough
very few people can achieve the 50ng level with 2,000 IU of vitamin D - 1000 IU per kg Vitamin D for autoimmune diseases – Coimbra Aug 2013
close to but < 2,000 IU/kg - Overview Toxicity of vitamin D
Have marked up the graph for 100 kg adult: 2,000 IU/kg would be toxic in about 2 weeks
Note that 2,000 IU is lower than the bottom of the graph