Educational Content Only: Not medical advice. Always consult a qualified healthcare provider before using any compounds. Many peptides are research chemicals not approved by the FDA.
Quick Summary
The sunshine vitamin — testosterone, immune function, mood, and bone health
Also called: Vitamin D, Cholecalciferol, D3, Vitamin D3
What is Vitamin D3 + K2?
Vitamin D3 (cholecalciferol) is a fat-soluble prohormone that functions as a steroid hormone when converted to its active form (calcitriol). Deficiency affects approximately 40% of the US population and is associated with reduced testosterone, impaired immune function, depression, and increased all-cause mortality. Supplementation in deficient individuals improves testosterone levels, mood, immune function, and bone density. Vitamin K2 (MK-7) is essential when supplementing D3 to direct calcium to bones rather than arteries.
How It's Made
Vitamin D3 is produced by UV-B irradiation of 7-dehydrocholesterol in lanolin (sheep's wool). Available in oil-based softgels for superior absorption. K2 as MK-7 is derived from fermentation of Bacillus subtilis natto.
Potential Benefits
Who Uses This?
Common goals and use cases for Vitamin D3 + K2: