Some links here are affiliate links. If you buy through them, it helps keep Fermentfulness growing — at no extra cost to you. I only recommend tools I’ve used, tested, and truly love. Learn more.
Vitamins & Essentials
4.6
Description
The Perfect Partner for Your Vitamin D3
California Gold Nutrition Vitamin K Complex completes the calcium regulation equation that vitamin D3 starts. While D3 helps your body absorb calcium, vitamin K2 directs it to your bones where it belongs — not your arteries where it doesn't. This comprehensive formula includes both K1 and K2 forms (MK-4 and MK-7) for complete vitamin K benefits.
What Makes It Special
- Complete K spectrum: K1 (phytonadione) + K2 (MK-4 & MK-7)
- 120 mcg total vitamin K per capsule
- Synergistic formula designed to work with vitamin D3
- Vegetarian capsules suitable for plant-based diets
- Third-party tested quality and purity
- Essential for calcium metabolism and cardiovascular health
Why You Need K with Your D
Taking vitamin D3 without K2 is like having a construction crew deliver materials without a foreman to direct where they go. Vitamin D increases calcium absorption, but K2 activates the proteins (osteocalcin and MGP) that ensure calcium strengthens your bones instead of calcifying your arteries. The MK-7 form stays active in your body for days, while MK-4 provides immediate support — together offering both quick and sustained benefits. For fermentation enthusiasts, adequate K2 also supports the gut barrier and may influence microbiome diversity.
🎯 The missing link that transforms vitamin D supplementation from potentially problematic to powerfully protective.