The dosage by individuals is not agreed by physicians because they are simply not aware of the benefits and some may still think it is a fad.
So, it is to Walmart we can turn for guidance.
When Blam first posted about D3, the article noted daily dosage of 2k units were effective in preventing flu in the prison. At the time Walmart sold 1k D3 tablets. Soon however the 1K tablets were beside the new 2k tablets. The 1K tablets disappeared. The tablets were replaced by 2k gel caps.
Eventually some doctors recommended 50k units per week. Walmart then began to sell 5 k gel caps. Today walmart sells 5k gelcaps twin packs (two bottles). Walmart still sells the 2K gell caps.
So 5k +2k = 7 k x 7 days = 49 k per week. that is close to the oft mentioned target of 50 k . Walmart carefully studies customer desires and has learned that people want the 5 k gel caps.
Thanks for the info.
Back in the 1970s the big deal was vitamin C to keep you healthy.