Blend / Vitamins

Vitamin D3 + K2 (MK-7)

Vitamin D3 essential for testosterone synthesis, immune function, bone health, and cardiovascular health. Deficiency extremely common globally. K2 MK-7 directs calcium to bones and prevents arterial calcification.

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Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.

Reference doseD3: 2000–5000 IU/day. K2 MK-7: 100–200 mcg/day. Take with fat-containing food.

Half-life48 hours

Risk flaglow

Regulatory noteReview required

Side effects and watch-outs

D3 toxicity with prolonged >10,000 IU/day: hypercalcaemia, kidney stones
K2 well tolerated at therapeutic doses
Measure 25-OH-D3 serum levels every 6 months
Target: 60–80 ng/mL serum 25-OH vitamin D3