Active vitamin D levels can be temporarily raised 80 percent with Boron – US Patent
Calcium-fructoborate Amazon 5+suppliers Nov 2019
Raises Calcidiol levels by 80% in about 2 hours
US Patent 9,271,994 Pietrzkowski; Zbigniew,
VDF Futureceuticals ==> https://www.futureceuticals.com
Patent is by the Senior Vice President of Research and Development, Discovery and Clinical Science

Sent him an email Nov 10, 2019
Patent was found in Boron Compounds in the Breast Cancer Cells Chemoprevention and Chemotherapy - 2011
" Indeed, calcitriol levels could be increased almost 80% upon the oral administration of a single dose of a boron-containing complex (15-20 mg boron as calcium fructoborate per day) (Pietrzkowski, 2010)"
📄 Download the PDF from Vitamin D Life
2014 version of the patent


📄 Download the PDF from Vitamin D Life
See also Vitamin D Life
Vitamin D and Boron contains the following
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Boron increases vitamin D in the blood virtually no details
Reasons for low response by vitamin D level in the blood
low Boron is one of many reasons
How you might double your response to vitamin D
Calcitriol category has items along with related searches and the following chart
