Vitamin D3 + K2 megadose protocol
Frydrychowski is adamant that current recommended daily allowances (800 IU) are absurdly low and based on flawed understanding. He says that when we gave large doses historically, problems occurred because K2 was not co-administered to handle the mobilized calcium. He has observed cancer patients with undetectable D3 levels who never improve until they reach ~100 ng/mL, and oncologists often forbid them from taking any supplements, sentencing them to death. He cites research showing that adequate vitamin D3 + K2 reduces risk of flu by 80%, breast cancer by 83%, leukemia by 50%, asthma by 63%, colorectal cancer by 65%, type 1 diabetes by 71%.
Vitamin D3 modulates over 2000 genes including those regulating immunity; it upregulates cathelicidin, an antimicrobial peptide. At high levels, it enables the immune system to recognize and eliminate cancer cells. K2 activates osteocalcin and matrix Gla protein, which shuttle calcium into bone matrix and away from arteries.
I sometimes prescribe a loading dose of 100,000 IU/kg? (he corrects himself: just 100,000 IU daily) for a few days. I had patients who took 100,000 IU daily for half a year and had no detectable problems.
Maintenance dose, if we have the property, the proper level should be 10,000 units. [...] and toxicity of 100 is a misunderstanding.

