10 Best D3 K2 Supplements in 2026

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Our best overall D3 K2 supplement is the Sports Research Vegan Vitamin D3 K2, which wins for its plant-based, highly bioavailable formula and rigorous third-party testing. Other excellent picks include the comprehensive Dr. Berg Nutritionals formula and the trusted, high-potency Nature Made softgel. Choosing the right combination supports how your body uses calcium, directing it to bones instead of arteries.

Many people don’t get enough vitamin D from sun or diet, leading to concerns about bone strength and immune function. A good D3 and K2 supplement addresses this by pairing the two fat-soluble vitamins that work synergistically for calcium metabolism.

This guide is based on research into product specifications, manufacturer data, expert analyses, and patterns in owner feedback. We break down the key differences in form, dose, and additional ingredients to help you find your match.

Top 10 D3 K2 Supplements in the Market

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The Best D3 K2 Supplements, Reviewed

#1Best Overall

Sports Research Vegan Vitamin D3 K2

Sports Research Vegan Vitamin D3 K2
Vitamin D3 dosage125 mcg (5000 IU)
Vitamin K2 formMK-7 from chickpeas
D3 sourceLichen-derived (vegan)
Softgel count60
CertificationsVegan, Non-GMO Project Verified
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What We Like

  • Plant-based D3 from lichen accommodates vegan diets
  • MK-7 K2 is the most bioavailable form
  • Third-party tested in a cGMP facility
  • Once-daily softgel simplifies supplementation

Trade-offs

  • Only 60-count size available in these specs
  • Softgel format not suitable for those who prefer gummies or powders
  • Contains coconut oil, a potential allergen for some

Sports Research’s vegan D3 is sourced from lichen, while other major supplements listed use lanolin, offering a distinct plant-based choice. It delivers 5000 IU of D3 and 100 mcg of MK-7 K2 in one daily softgel. The formula is Vegan Certified, Non-GMO Project Verified, and free from soy and carrageenan, with each batch undergoing third-party testing for those who prioritize verified purity alongside clinical strength.

The supplement comes as 60 softgels, which requires reordering about twice as often as a 120-count bottle like Pure Encapsulations offers. For users who dislike swallowing softgels, alternatives like Nature Made’s gummy format exist. The plant-based formula, derived from lichen and fermented chickpeas, is designed for individuals following vegan or vegetarian diets and seeking a soy-free option.

Best for: Vegans, vegetarians, and anyone seeking a completely plant-based, high-potency D3 and K2 supplement with rigorous third-party testing. Not ideal for those who prefer gummies or need a higher capsule count per bottle.
#2Best Comprehensive Formula

Dr. Berg Nutritionals HWC-220615 D3 K2 Supplement

Dr. Berg Nutritionals HWC-220615 D3 K2 Supplement
D3 per serving5000 IU
K2 per serving50 mcg
Capsule count60
Dimensions2.6 x 1.2 x 2.6 inches
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What We Like

  • Includes absorption cofactors magnesium, B6, and zinc
  • Features MCT powder for enhanced fat-soluble vitamin uptake
  • Made in cGMP-certified U.S. facilities

Trade-offs

  • Bottle is relatively tall at 2.6 inches for a 60-count
  • Contains 50 mcg of K2, less than some other formulas

It’s built for someone who understands that taking a vitamin is one thing, but getting your body to actually use it is another. The MCT powder is a thoughtful touch for absorption, turning a fat-soluble vitamin supplement into something your system can actually process. This is for the tinkerer who’s tired of buying separate bottles and wants a synergistic stack in one capsule, trusting the process more than a marketing claim.

The vitamin K2 content is 50 mcg per serving, which is less than the 100 mcg found in products like the Sports Research Vegan D3 K2. For individuals focusing specifically on vitamin K2 intake, this is a point of comparison. The formulation includes cofactors like magnesium and zinc, which the brand says help the body absorb and activate vitamin D.

Best for: The supplement protocol optimizer who values synergistic nutrient activation over individual megadoses. Not ideal for someone seeking the highest possible standalone vitamin K2 intake.

Product photos

#3Best Pharmacist Recommended

Nature Made Vitamin D3 K2 Supplement

Nature Made Vitamin D3 K2 Supplement
Vitamin D3 per serving5000 IU (125 mcg)
Vitamin K2 per serving100 mcg
FormSoftgels
Supply30-day (30 count)
Key certificationsUSP Verified, Gluten Free
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What We Like

  • High-potency 5000 IU D3 for significant deficiencies
  • Includes K2 to help direct calcium to bones
  • USP verification for ingredient quality assurance
  • Number one pharmacist recommended brand in category

Trade-offs

  • Dosage is specifically for higher needs, requiring professional guidance

A 5000 IU dose of Vitamin D3 positions this supplement for adults with a confirmed higher need or deficiency, a common scenario discovered through bloodwork. It pairs that with K2, a sensible combination for directing calcium toward bone support. The formulation backs a reputation for pharmacist recommendations and carries USP verification, which matters if your priority is a straightforward, trusted formula from a mainstream brand without extra bells and whistles.

Designed for adults with higher Vitamin D needs or a deficiency as determined by a healthcare professional, this supplement provides a targeted 30-day supply. The bottle is small and lightweight, making it easy to store in a medicine cabinet. It focuses on the core combination of 5000 IU of Vitamin D3 and 100 mcg of Vitamin K2 to support bone and immune health, without the additional minerals or vitamins found in some other formulations.

Best for: Adults seeking a trusted, high-potency D3+K2 for a diagnosed deficiency, backed by pharmacist recommendations and USP verification. Not ideal for those preferring a larger supply, a specific K2 form (MK-7), or additional complementary nutrients in one capsule.
#4Best Allergen-Free

Pure Encapsulations Vitamin D3 K2

Pure Encapsulations Vitamin D3 K2
Capsule count120 capsules
Vitamin D3 dosage4000 IU
Key certificationsGluten-Free, Non-GMO
Allergen profileFree from common allergens
Dimensions2.0 x 2.0 x 3.0 inches
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What We Like

  • High 4000 IU dose of vitamin D3
  • Excludes common allergens and GMOs
  • Combines D3 with K2 for vascular health
  • Substantial 120-capsule supply

Trade-offs

  • D3 dose is lower than many 5000 IU competitors

The 4000 IU dose of vitamin D3 provides a strong foundation for immune support without the megadosing some formulas use. This makes it a sensible choice for someone who wants to maintain healthy levels rather than aggressively correct a deficiency. Combined with vitamin K2, it directs calcium properly, which matters for long-term bone and arterial health. The formula is deliberately clean, stripping out gluten, GMOs, and common allergens, which is the core reason it stands out for anyone with sensitivities or who simply wants a no-fuss ingredient list.

The trade-off is that you get a slightly lower per-capsule vitamin D potency compared to options like Sports Research Vegan Vitamin D3 K2. That product delivers 5000 IU, which might be preferable if your bloodwork indicates a need for a higher maintenance dose. Pure Encapsulations focuses on purity over extreme potency. Its 120-capsule bottle offers good longevity, but the package is a bit taller than some rivals, so it takes up more space in your supplement drawer.

Best for: Individuals with food sensitivities or who prioritize a minimalist, allergen-free supplement formula. Not ideal for those specifically seeking the highest available vitamin D3 dose.
#5Best High-Potency Blend

NutraHarmony D3 K2 Complex

NutraHarmony D3 K2 Complex
Vitamin D3 per serving10000 IU
Vitamin K2 formMK-7
Vitamin K2 per serving120 mcg
Additional nutrientsMagnesium, Zinc, B12, C
Capsule count120
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What We Like

  • High-potency 10000 IU Vitamin D3 dose
  • Includes bioavailable MK-7 form of K2
  • Enhanced with black pepper extract for absorption
  • Made in GMP-certified, third-party tested facilities

Trade-offs

  • 10000 IU D3 is very high for daily use without testing

A 10000 IU dose of Vitamin D3 per serving is a serious commitment. This is for someone who knows their levels are low, perhaps from limited sun exposure or a confirmed deficiency, and needs a significant boost to reach optimal range. The inclusion of MK-7 K2 ensures the calcium you absorb is directed to bones and teeth, not arteries. It’s a straightforward, high-potency formula backed by additional nutrients like magnesium and zinc for broader immune and energy support, plus black pepper extract to make sure you’re actually getting what you pay for.

With 10,000 IU of Vitamin D3 per serving, this formula is designed for those needing high-potency support, not routine maintenance. For simply topping up normal levels, a 5000 IU option like Nature Made’s softgel would be a better fit. Compared to the vegan-focused Sports Research product, which offers 5000 IU, NutraHarmony delivers double the D3 and includes extra minerals and vitamins like Magnesium and B12. This makes it a comprehensive choice for filling a specific nutritional gap rather than a casual addition to an already balanced diet.

Best for: Individuals with known vitamin D deficiency or significantly limited sun exposure seeking a high-potency, comprehensive formula. Not ideal for those maintaining already-optimal levels or preferring plant-based or non-capsule formats.
#6Best Orange Softgel

Nordic Naturals Vitamin D3 K2

Nordic Naturals Vitamin D3 K2
Vitamin D32000 IU
Vitamin K2 formMK-7, 90 mcg
Softgel flavorOrange
Count60 softgels
Third-party testedYes
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What We Like

  • Synergistic D3 and K2 formula for calcium balance
  • Uses highly bioavailable MK-7 form of K2
  • Third-party tested for purity and freshness
  • Non-GMO, gluten-free, and dairy-free

Trade-offs

  • Contains 2000 IU D3, a lower potency than many rivals
  • 60-count bottle offers a two-month supply at one per day

This formula combines 2000 IU of vitamin D3 with 90 mcg of K2 as MK-7 in a single orange-flavored softgel. That specific pairing is the core of its design, working together to direct calcium toward bones and away from arteries. It’s a straightforward, clean option for someone who wants a moderate, bioavailable dose from a brand with a strong emphasis on purity and sustainable practices. The third-party testing and non-GMO, allergen-free profile make it a prudent choice for the cautious supplement user.

Nordic Naturals Vitamin D3 K2 provides 2000 IU of vitamin D3, a maintenance-level dose suitable for daily support rather than aggressive repletion. Its formula pairs that with 90 mcg of vitamin K2 as MK-7, a combination designed to work synergistically for calcium balance. The softgels are third-party tested for purity and are non-GMO, gluten-free, and dairy-free, aligning with the brand’s commitment to ethical innovation.

Best for: Individuals seeking a clean, moderately dosed, and bioavailable D3-K2 supplement from an ethically focused brand. Not ideal for those requiring high-potency D3 for deficiency correction or wanting a formula with additional bone-support minerals.
#7Best Multi-Nutrient Stack

Sandhu's 6-in-1 D3 K2 Capsules

Sandhu's 6-in-1 D3 K2 Capsules
Dose per capsule5000 IU D3 + 120mcg K2 MK-7
Additional nutrientsMagnesium, Zinc, B6, Quercetin
Capsule count120
Supply duration4 months
ManufacturingNSF-GMP-certified USA facility
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What We Like

  • Consolidates six daily nutrients into one capsule
  • Includes synergistic co-factors like magnesium and quercetin
  • Four-month supply reduces refill frequency
  • Third-party tested for purity and potency

Trade-offs

  • 5000 IU D3 dose may exceed needs for some users
  • Larger multi-nutrient formula lacks dosage flexibility

A 5000 IU D3 dose paired with five supporting nutrients means you’re covering several common deficiencies with a single daily capsule. This makes it a strong candidate for someone who prefers a consolidated, no-guesswork stack aimed at systemic support for bone, immune, and energy systems. The inclusion of magnesium to activate D3 and quercetin for absorption shows a designed synergy that justifies the multi-nutrient label.

This supplement combines six key nutrients into a single daily capsule, which eliminates the need to manage multiple bottles. For users who only require vitamin D3 and K2, a simpler formula like Pure Encapsulations Vitamin D3 K2 may offer less redundancy. The Sports Research Vegan D3 K2 is formulated with coconut oil for those specifically seeking a plant-based option. Sandhu’s product is designed for individuals who prefer a comprehensive, multi-ingredient formula and value consolidated convenience.

Best for: Individuals seeking a comprehensive, fixed-dose nutrient stack for systemic support in one daily capsule. Not ideal for those who need to tailor individual nutrient doses separately.

Product photos

#8Best High Count Supply

Horbäach Vitamin D3 K2 Softgels

Horbäach Vitamin D3 K2 Softgels
D3 Potency5000 IU (125 mcg)
K2 Form & Amount100 mcg MK-7
Softgel Count180 capsules
Key Free-From ItemsGluten-Free, Non-GMO
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What We Like

  • High 180-count supply reduces purchase frequency
  • Pairs a substantial 5000 IU D3 dose with MK-7 K2
  • Formula is free from common allergens and GMOs

Trade-offs

  • Lacks additional supportive nutrients like magnesium or zinc

With 180 softgels in each bottle, this supplement provides a long-lasting supply for daily users, reducing the frequency of purchases. It delivers a high-potency combination of 125 mcg of Vitamin D3 and 100 mcg of Vitamin K2 as MK-7, focusing on the essential synergy for bone and immune support. The formula avoids common allergens and is non-GMO, which simplifies selection for those with dietary sensitivities.

The physical footprint and singular focus are the main considerations. The taller bottle won’t tuck away as neatly as a compact option like the Dr. Berg capsules. It also doesn’t include the complementary minerals found in something like Sandhu’s 6-in-1, so if you’re looking for an all-in-one solution for bone and immune support, this isn’t it. This is a workhorse supply of two specific vitamins, ideal for integrating into a broader, customized supplement routine you’ve already dialed in.

Best for: The supplement veteran who wants a high-volume, no-frills source of D3 and MK-7 K2 to anchor a personalized stack. Not ideal for someone seeking a compact travel bottle or a comprehensive formula with added minerals.

Product photos

#9Best Enhanced Absorption

UpNourish Liposomal D3 K2 MK-7

UpNourish Liposomal D3 K2 MK-7
Vitamin D3 per serving5000 IU
Vitamin K2 MK-7 per serving100 mcg
Liposomal technologyEnhanced absorption formula
Count365 mini softgels
Dietary featuresNon-GMO, gluten-free
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What We Like

  • Liposomal technology for superior nutrient absorption.
  • High-potency 5000 IU D3 and 100 mcg K2 MK-7.
  • Promotes calcium utilization for bone and skeletal health.
  • Trusted brand recommended by pharmacy professionals.

Trade-offs

  • Bottle is 5.0 inches tall, requiring more shelf space.
  • At 0.3 pounds, it is heavier than many 60-count bottles.

The liposomal delivery system is the core feature here, designed to maximize the bioavailability of the vitamins. This makes it a strong candidate for anyone who prioritizes efficient nutrient uptake over simply checking a potency box. The 365-count supply also means you’re set for a full year without reordering, which suits someone who values convenience and dislikes running out.

Physical size is the main consideration. The bottle is taller and heavier than compact options like the Dr. Berg Nutritionals supplement, so it demands more real estate in your medicine cabinet. For someone with limited storage or who travels frequently with their supplements, this bulk could be a nuisance compared to a smaller, month-supply bottle.

Best for: Buyers focused on maximizing absorption through advanced liposomal technology and wanting a year's supply. Not ideal for those with very limited storage space or who prefer ultra-portable supplements.

Product photos

#10Best Gummy Alternative

Nature Made Vitamin D3 K2 Gummies

Nature Made Vitamin D3 K2 Gummies
FormGummies
Vitamin D3 per serving5000 IU (125 mcg)
Vitamin K2 per serving100 mcg
Servings per bottle25
FlavorPeach
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What We Like

  • Chewable gummy form avoids swallowing pills
  • Gluten-free with no synthetic dyes or artificial flavors
  • Combines D3 with K2 to help direct calcium to bones
  • Number one pharmacist recommended vitamin brand

Trade-offs

  • Requires chewing two gummies daily for a full dose
  • Formulated for adults with higher vitamin D needs

The 5000 IU of Vitamin D3 in a chewable gummy format makes this a practical choice for anyone who struggles with swallowing pills but still wants a substantial daily dose. It’s suited for adults, particularly those whose healthcare professional has identified a higher need or deficiency, who prioritize a pleasant peach flavor and a formulation free from common synthetic additives. The inclusion of 100 mcg of K2 works with the D3 to support bone health by helping to manage calcium placement.

You need two gummies to get the full 5000 IU and 100 mcg of K2, so a 50-count bottle only lasts 25 days. Compared to the Sports Research Vegan D3 K2 in capsule form, this takes up more shelf space due to the larger bottle. The gummy format may not appeal to those seeking the most concentrated or travel-friendly option. It’s a straightforward, palatable delivery system for the core nutrients without extra features.

Best for: Adults who prefer chewable vitamins and need a higher-dose D3 and K2 combination as directed by a healthcare provider. Not ideal for those seeking a long-lasting supply in a compact bottle or who dislike sweet-tasting supplements.

Product photos

How We Evaluated D3 K2 Supplements

Our evaluation synthesized data from product specifications, clinical research on bioavailability, and professional round-ups of quality D3 K2 products. We prioritized third-party testing certifications, as the supplement industry lacks strict FDA oversight, making independent verification of purity and potency a critical safety check.

The most important criteria were the form and dosage of both vitamins. We looked for D3 from highly absorbable sources like lanolin or lichen and preferred the MK-7 form of K2 for its longer activity in the body. The inclusion of absorption co-factors, like fats or black pepper extract, and the presence of common allergens were also key differentiators.

A research-based approach has limits; we cannot verify personal tolerance or long-term effects. We strongly advise consulting a healthcare provider to determine your specific needs, especially for high dose D3 formulas.

What To Look For In D3 K2 Supplements

The goal is to find a supplement that effectively supports your body’s calcium regulation for bone and cardiovascular health. Key factors include the specific forms of the vitamins, their dosages, and what else is in the capsule.

Look for D3 from lanolin or lichen and K2 as MK-7 for best absorption. Consider your needed potency (2000-10000 IU D3) and check for third-party testing and allergen-free formulas if needed.

Vitamin Forms and Bioavailability

Vitamin D3 is more effective at raising blood levels than D2, with common sources being lanolin (from sheep’s wool) or lichen (a vegan alternative). For vitamin K2, the MK-7 form is preferred because it remains active in the bloodstream for over 24 hours, allowing for consistent, once-daily dosing. Supplements with D3 K2 MK-7 provide this efficient, long-acting combination.

Dosage and Potency

Dosage needs vary widely. A standard maintenance dose might be around 2000 IU, while a 5000 IU dose is common for addressing insufficiency. Very high 10,000 IU formulas are for significant deficiencies under professional guidance. The ratio of K2 to D3 matters; a common pairing is 100-200 mcg of K2 MK-7 with 5000 IU of D3.

Additional Ingredients and Format

Since D3 and K2 are fat-soluble, they are best absorbed when taken with dietary fat. Many softgels include a carrier oil like coconut or MCT oil for this reason. Some formulas add synergistic nutrients like magnesium or zinc for enhanced activation. Consider your format preference: standard softgels, liquid D3 K2 drops, or chewable D3 K2 gummies.

  • Check for third-party verification seals (USP, NSF) for quality assurance.
  • Review the allergen statement if you have sensitivities to soy, dairy, or coconut.
  • Consider the serving count; a 60-count bottle is a two-month supply at one per day.

Always discuss starting a new supplement, especially a high-potency one, with your doctor.

D3 K2 Supplements Compared

The following table compares the key specifications of our top picks to help you see the differences in potency, form, and supply at a glance.

ProductD3 per servingK2 per servingCountForm
Sports Research Vegan Vitamin D3 K2125 mcg (5000 IU)100 mcg60Softgel
Dr. Berg Nutritionals HWC-220615 D3 K2 Supplement5000 IU50 mcg60Capsule
Nature Made Vitamin D3 K2 Supplement5000 IU (125 mcg)100 mcg30Softgel
Pure Encapsulations Vitamin D3 K24000 IUN/A120Capsule
NutraHarmony D3 K2 Complex10000 IU120 mcg120Capsule
Nordic Naturals Vitamin D3 K22000 IU90 mcg60Softgel
Sandhu's 6-in-1 D3 K2 Capsules5000 IU120mcg120Capsule
Horbäach Vitamin D3 K2 Softgels5000 IU (125 mcg)100 mcg180Softgel
UpNourish Liposomal D3 K2 MK-75000 IU100 mcg365Mini softgel
Nature Made Vitamin D3 K2 Gummies5000 IU (125 mcg)100 mcg50Gummy

Frequently Asked Questions

Which brand of vitamin D3 with K2 is the best?

The best brand depends on your specific needs. Our top pick, Sports Research, is ideal for a vegan, third-party tested formula. For a trusted, high-potency option, many turn to pharmacist-recommended brands like Nature Made. Your choice should align with your required dosage, preferred K2 form (like MK-7), and any dietary restrictions.

What is the difference between MK-4 and MK-7 K2?

MK-4 and MK-7 are different forms of vitamin K2. MK-4 is cleared from the body within hours, often requiring multiple doses per day. MK-7 has a much longer half-life, staying active in the bloodstream for over 24 hours, which makes it more effective for consistent, once-daily supplementation to support bone and cardiovascular health.

How much D3 and K2 should I take daily?

There is no universal dose. General maintenance often falls between 2000-5000 IU of D3 paired with 100-200 mcg of K2 MK-7. However, your ideal dose depends on your current blood levels, sun exposure, diet, and health goals. A healthcare provider can order a simple blood test to determine if you need a standard or a high dose D3 protocol.

Are D3 and K2 supplements better taken together?

Yes, they work synergistically. Vitamin D3 helps your body absorb calcium, while vitamin K2 directs that calcium to your bones and teeth, helping prevent it from depositing in soft tissues like arteries. Taking them together supports this coordinated process for optimal bone strength and cardiovascular health.

What are the symptoms of K2 deficiency?

K2 deficiency is often subtle and long-term. It’s not typically diagnosed by acute symptoms but is linked to an increased risk of arterial calcification and osteoporosis. Since K2 is crucial for activating proteins that manage calcium, a lack of it may contribute to poor bone density and vascular health over time, highlighting its role in overall hormonal balance.

The Bottom Line

For most people seeking a high-quality, bioavailable D3 and K2 supplement, the Sports Research Vegan Vitamin D3 K2 is the best overall choice. Its plant-based D3 from lichen, MK-7 form of K2, and third-party testing make it a standout for vegans and quality-conscious buyers alike.

If you’re building a personalized stack, consider the high-count value of Horbäach or the comprehensive multi-nutrient formula from Sandhu’s. For those who prefer not to swallow pills, the Nature Made gummies offer a solid alternative. Remember, the most important step is consulting with a healthcare provider to match the supplement’s potency to your actual needs.