Vitamin D3 + K2: Complete Product Guide
What is Vitamin D3 + K2?
Vitamin D3 (cholecalciferol) is the most bioavailable form of vitamin D, and Vitamin K2 (menaquinone-7) helps your body use calcium properly. Together they work as a team — which is why we combine them in one softgel.
Key benefits
- Bone health — D3 helps your body absorb calcium; K2 helps direct that calcium to your bones where it belongs
- Immune support — vitamin D plays a key role in healthy immune function, especially through the winter months
- Cardiovascular support — K2 supports healthy blood vessel function
- Mood & vitality — vitamin D supports a healthy mood, particularly in seasons with less sunshine
- Healthy teeth — works with calcium for dental health
How to take Vitamin D3 + K2
- Serving: 10,000 IU Vitamin D3 + 200 mcg Vitamin K2 (as Menaquinone-7) — 2 softgels daily with food
- Bottle: 60 softgels — up to 1 month's supply
- Take with a meal containing fat — both vitamins are fat-soluble, so foods like eggs, avocado, nuts, or olive oil significantly improve absorption
Who often considers D3 + K2?
- Adults over 50 (the skin's natural vitamin D production declines with age)
- People who spend most of their time indoors or live in northern climates
- Anyone focused on bone health
- People taking calcium supplements (K2 helps the body use calcium well)
Curious about your vitamin D level? Ask your doctor — a simple blood test can show where you stand.
Drug interactions — important
Talk to your doctor before taking if you:
- Take blood thinners (warfarin/Coumadin) — vitamin K can interact
- Take calcium channel blockers
- Have kidney concerns or a history of kidney stones
- Have been told you have high calcium levels
- Are pregnant or nursing
Possible side effects
At recommended servings, side effects are rare. Don't take more than the label suggests — with fat-soluble vitamins, more isn't better. Your doctor can advise on the right amount for you.
Storage
Cool, dry place away from sunlight, tightly closed, out of humid rooms. Check the expiration date.
Quality & testing
Third-party tested for purity and potency, manufactured in the USA in GMP-certified, FDA-registered facilities, uses the premium forms (D3, not D2; K2 as MK-7), free from contaminants and heavy metals. See the actual lab results for Vitamin D3 + K2 on our Third-Party Testing page, just select Vitamin D3 + K2 from the dropdown.
FAQs
Why not just get vitamin D from the sun? Season, latitude, age, sunscreen, and indoor time all limit natural production — which is why so many adults run low, especially in winter.
Why combine D3 with K2? D3 helps you absorb calcium; K2 helps your body put that calcium to good use. They're better together.
Should I take it year-round? Most people do, since indoor lifestyles limit sun exposure even in summer. Your doctor can help you decide.
Our guarantee
Try Vitamin D3 + K2 risk-free with our 90-day money-back guarantee on lumanutrition.com orders — even if the bottle is empty.
Still need help?
Call us at (323) 274-1407, email help@lumanutrition.com, or use the contact form on our website.