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  • Vitamin D3 + K2 overview infographic
  • Vitamin D3 + K2
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  • Vitamin D3 + K2
  • Vitamin D3 + K2
  • Vitamin D3 + K2
  • Vitamin D3 + K2
  • Vitamin D3 + K2
  • Vitamin D3 + K2
  • Vitamin D3 + K2
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  • Vitamin D3 + K2 bottle

4.9 972,661+ Happy Customers

Heart & Bone Support with Vitamin D3 + K2

Bone Strength, Immune Support & Heart Health
Bone Strength
Immune Support
D3 + K2 Together
Made in the USA
Third-Party Tested
90-Day Guarantee
Delivered by Aug. 27–29 🇺🇸 Fast US Shipping
Trusted by 972,661+ Americans Made in the USA. Veteran-owned.
90-Day Guarantee

We offer a 90-day money-back guarantee.

If you don't feel the difference, we'll issue a full refund — no questions asked. Simply reach out to our support team.

The Science Behind It

Vitamin D3 supports immune function, bone strength, and mood — and most people run low, especially anyone who works indoors or lives north of the sun belt.

Here’s why K2 matters: D3 helps you absorb calcium, but K2 directs that calcium to your bones — where you want it — rather than your arteries. They’re a team, and most D supplements ship half of it.

D levels build over weeks to months — it’s a bloodwork vitamin, and customers love watching their numbers come up.*

How to Take

Take 2 softgels daily with a meal containing some fat — both D3 and K2 are fat-soluble vitamins, so food is essential for absorption.

This is a robust daily dose of D3; if you're unsure what level is right for you, your doctor can check your vitamin D with a simple blood test.

Shipping & Returns

We offer tracked shipping on all orders, processed within 24 business hours on weekdays.

U.S. orders typically arrive in 3–5 days. Shipping is free on subscriptions and on one-time orders over $50.

Returns are easy. Every order is covered by our 90-day money-back guarantee — email help@lumanutrition.com and we’ll handle everything.

Is It Safe?

Yes — our D3 + K2 is made in FDA-registered, GMP-certified U.S. facilities with no proprietary blends. Every batch is third-party tested for purity and potency by an independent ISO 17025-accredited lab.

Important: if you take warfarin or other blood thinners, talk to your doctor before taking K2 — vitamin K interacts directly with these medications. Also consult your provider if pregnant or nursing.

Ingredients

Per 2-softgel serving: Vitamin D3 (250 mcg / 10,000 IU) and Vitamin K2 as Menaquinone-7 (200 mcg).

No artificial dyes or preservatives. Made in FDA-registered, GMP-certified U.S. facilities.

3rd-Party Testing

Every batch is tested by an independent ISO 17025-accredited lab — potency, heavy metals, and microbiology. We publish every result. Click here.

Start feeling these benefits in 90 days or less.

Low vitamin D is one of the most common deficiencies in America — and taking D without K2 is only half the job. This pair finishes it.

Immune support

Vitamin D is foundational to a ready, balanced immune system.

Bone strength

D3 absorbs the calcium; K2 sends it to your bones.

Heart-smart pairing

K2 helps keep calcium out of the places it doesn't belong.

Mood & energy

Healthy D levels are linked with steadier mood, especially in winter.

What real customers are saying.

★★★★★ 4.9 · 142 reviews · verified buyers of this formula

Rachel D.
★★★★★

“I've been using this supplement for awhile now and finally my vitamin D levels are normal. Would definitely recommend”

Rachel D.Vitamin D3 + K2 · Verified buyer
Bill B.
★★★★★

“Very good experienced overall fast results from both of these supplements. Would highly recommend them.”

Bill B.Vitamin D3 + K2 · Verified buyer
Martha K.
★★★★★

“I like this product and would recommend it to others. I'm glad to have a high quality alternative to grocery store brands.”

Martha K.Vitamin D3 + K2 · Verified buyer

Most vitamin D ships half the job.

D without K2 moves calcium without directing it.

Missing K2

D3 increases calcium absorption — but it's K2 that directs calcium to bones instead of arteries. Most D supplements skip it entirely.

Hidden blends

Proprietary blends let a brand list an ingredient while telling you nothing about how much is actually inside each capsule.

Untested

Many brands claim third-party tested. Can they prove it? Ask them for a result. We post ours freely. Click here.

We built this bottle to a higher standard. Here’s the proof.

Premium quality for a fair price. The Luma 4-Point Verification checks potency, purity, microbiology and identity confirmation on every batch. We publish the results of all third-party testing.

Why our D3 + K2 is better.

LumaOthers
D3 + K2 TogetherYesNoDose Stated On LabelYesNoNo Proprietary BlendsYesNoThird-Party TestedYesNoPublished Lab ReportsYesNo
Per daily serving. Others = median across the ten best-selling comparable bottles, Amazon, July 2026.

How long until I see results?

This one builds with consistent daily use rather than hitting all at once. Typical, not guaranteed — which is why the guarantee runs 90 days.

Week 1–4 Levels rising

Vitamin D builds in your blood gradually with daily use.

Week 4–8 Feeling it

Energy and mood steadying is the most common report.

Week 8+ The bloodwork win

The vitamin D number on your next panel is the payoff.

Trusted by world-class medical professionals.

Dr. Kela Smith
Dr. Kela SmithPhD, DNM
Integrative & functional medicine✓Recommends for metabolic support

“What I really love about Luma Nutrition is how dedicated they are to purity, proper dosing, and smart formulation.”

Dr. Blane Schilling
Dr. Blane SchillingM.D.
Sports & regenerative medicine✓Recommends for joint and recovery

“These aren’t just pretty labels. They really deliver. The dosing is where most brands quietly cut corners.”

Dr. Erica Ginsburg
Dr. Erica GinsburgM.D.
Internal medicine✓Recommends for heart health

“Quality ingredients, appropriate dosing, thoughtful formulations. I’m comfortable recommending them to patients.”

These practitioners partner with Luma Nutrition as paid ambassadors, sharing their own opinions and experience.

Jake Langley, founder of Luma Nutrition

I couldn’t find a brand I trusted. So I built one.

It started with a supplement I almost bought for my parents. The label looked impressive. But I couldn’t find any test results, and the dose was a fraction of what the research used.

The Army drilled honor and integrity into me. You don’t cut corners when people are counting on you. The supplement industry cut them everywhere I looked.

So I built Luma to a higher standard: meaningful doses, independent testing on every batch, and verified results anyone can see.

Nothing goes in these bottles that I wouldn’t give my family or take myself. We’ll never ask you to trust a claim we aren’t willing to prove.

Questions? Reach out. I read and answer them.

Jake Langley signature
Jake LangleyFounder · U.S. Army Infantry Officer
Jake’s Deal

Take it for 90 days. If you don't feel the difference, you get your money back.

We refund the whole order, empty bottles included. We stand behind the quality of what we make, and we’re confident enough to put our money where our mouth is.

Jake Langley signature Jake Langley · Founder, U.S. Army Officer
Shop this formula
Jake Langley
90-day money-back guaranteeEmpty bottles included
Made in the USAFDA-registered, NSF GMP
Third-party testedEvery batch, published
Veteran-ownedFounded by a U.S. Army officer

Questions before you order.

How long until I see results?

Vitamin D builds in your blood over weeks. Many customers report feeling steadier within a month — and seeing their D level normal at the next checkup is the real win.

How do I take it?

One serving daily. The full serving size is on the label — consistency matters more than timing.

Can I take this with my prescriptions?

If you take warfarin or another blood thinner, talk to your doctor before starting K2 — vitamin K interacts directly with those medications.

How is this different from a cheaper version?

The K2. Most vitamin D bottles skip it, which leaves calcium undirected; ours pairs them, states both doses, and publishes a lab report for every lot.

Is it made in the USA and tested?

Yes — made in FDA-registered, GMP-certified U.S. facilities, and every batch is tested by an independent ISO 17025-accredited lab. We publish every result.

What if it does not work for me?

You get your money back. The whole order, empty bottles included, for 90 days. No forms and no restocking fee.

Real customers, real results.

Verified buyers of this formula, in their own words.

4.9★★★★★142 reviews
5★91%
4★6%
3★2%
2★1%
Read all 142 reviews →
Individual results vary. These statements have not been evaluated by the FDA.