Innovix Labs Full Spectrum Vitamin K2: Is Innovix Labs Full Spectrum Vitamin K2 safe for daily use?

Yes, vitamin K2 at the doses in this product (500mcg MK-4 + 100mcg MK-7) is well-tolerated for daily use in healthy adults. It has a 4.7-star rating from over 7,400 Amazon reviews, indicating excellent consumer satisfaction. The main safety concern is for people on blood thinners like warfarin.

Innovix Labs Full Spectrum Vitamin K2: Can I take Innovix Labs K2 if I am on warfarin or blood thinners?

If you take warfarin (Coumadin), do not take vitamin K2 without explicit medical approval, as vitamin K directly counteracts warfarin. Newer anticoagulants (DOACs like apixaban, rivaroxaban) do not interact with vitamin K, so K2 supplementation is generally safe with those medications.

Innovix Labs Full Spectrum Vitamin K2: Are there any side effects from Innovix Labs Full Spectrum K2?

Vitamin K2 supplements rarely cause side effects at recommended doses. Some people report mild digestive upset when first starting. The soy-free, oil-based softgel format is generally well-tolerated and easy on the stomach.

Innovix Labs Full Spectrum Vitamin K2: Is Innovix Labs K2 safe to take with calcium and vitamin D supplements?

Yes, vitamin K2 is actually recommended alongside calcium and vitamin D. K2 activates proteins that direct calcium to bones and away from arteries. This combination is synergistic and may improve bone density while protecting cardiovascular health.

Innovix Labs Full Spectrum Vitamin K2: Is Innovix Labs K2 safe for children or teenagers?

Vitamin K2 supplementation in children should be discussed with a pediatrician. The doses in this product are formulated for adults. Children have different nutritional needs and may not require supplemental K2 if their diet includes adequate vitamin K sources.

Innovix Labs Full Spectrum Vitamin K2: How many Innovix Labs K2 softgels should I take daily?

The recommended dose is one softgel daily, providing 500mcg MK-4 and 100mcg MK-7. Take with a fat-containing meal for optimal absorption. The bottle contains 90 softgels for a three-month supply.

Innovix Labs Full Spectrum Vitamin K2: Should I take Innovix Labs K2 with food or on an empty stomach?

Take with a fat-containing meal for optimal absorption. Vitamin K2 is fat-soluble and requires dietary fat for proper uptake. The oil-based softgel already provides some lipid carrier, but a meal with healthy fats further enhances absorption.

Innovix Labs Full Spectrum Vitamin K2: Can I take two Innovix Labs K2 softgels for a higher dose?

Two softgels would provide 200mcg MK-7 and 1000mcg MK-4, which is still within safe ranges for most adults. However, the standard one-softgel dose provides clinically relevant MK-7 levels. Higher doses are rarely necessary for general bone and cardiovascular support.

Innovix Labs Full Spectrum Vitamin K2: How long does it take to see benefits from Innovix Labs K2?

MK-7 has a 72-hour half-life and reaches steady-state blood levels within about two weeks of daily use. Bone density improvements require months to years of consistent supplementation. Cardiovascular calcification protection is a long-term benefit that builds over time.

Innovix Labs Full Spectrum Vitamin K2: Should I pair Innovix Labs K2 with vitamin D3?

Yes, K2 and D3 work synergistically. Vitamin D increases calcium absorption from the gut, while K2 ensures that calcium is deposited in bones rather than accumulating in arteries. Many practitioners recommend taking both together for optimal bone and heart health.

Innovix Labs Full Spectrum Vitamin K2: What forms of vitamin K2 are in Innovix Labs Full Spectrum?

This product uniquely combines both major K2 forms: MK-4 (500mcg) and MK-7 (100mcg). MK-7 provides long-acting baseline coverage with its 72-hour half-life. MK-4 targets specific tissues including brain, pancreas, and reproductive organs with its shorter 6-hour half-life.

Innovix Labs Full Spectrum Vitamin K2: Why does Innovix Labs include both MK-4 and MK-7?

Each K2 form has distinct tissue distribution and half-life characteristics. MK-7 maintains stable blood levels for cardiovascular and bone protection. MK-4 concentrates in brain, pancreas, and reproductive tissues. Combining both provides broader tissue coverage than either form alone.

Innovix Labs Full Spectrum Vitamin K2: Is Innovix Labs K2 soy-free?

Yes, Innovix Labs Full Spectrum K2 is formulated to be soy-free. This is important because many vitamin K2 supplements use soy-derived MK-7. The soy-free designation makes it suitable for people with soy allergies or sensitivities.

Innovix Labs Full Spectrum Vitamin K2: What oil is used in the Innovix Labs K2 softgel?

The softgel contains an oil base to enhance absorption of fat-soluble vitamin K2. The specific oil carrier dissolves the K2 and keeps it in a bioavailable form. This oil-based delivery is superior to dry capsule formats for fat-soluble vitamins.

Innovix Labs Full Spectrum Vitamin K2: Is the MK-4 dose in Innovix Labs K2 clinically relevant?

The 500mcg MK-4 dose is far below the 45mg (45,000mcg) daily dose used in Japanese bone density studies. However, it may still provide tissue-specific benefits in brain and other organs at lower doses. The MK-7 component at 100mcg is at the full clinical dose.

Innovix Labs Full Spectrum Vitamin K2: Does Innovix Labs K2 actually improve bone density?

Clinical studies show that MK-7 at 100mcg daily (the dose in this product) can help slow bone loss in postmenopausal women over 3 years. The combination with MK-4 may provide additional tissue-specific benefits. Best results come from pairing K2 with adequate vitamin D and calcium.

Innovix Labs Full Spectrum Vitamin K2: Does Innovix Labs K2 help prevent arterial calcification?

Vitamin K2 activates matrix GLA protein (MGP), which inhibits calcium deposition in arterial walls. The Rotterdam Study showed that high dietary menaquinone intake was associated with reduced coronary heart disease risk. The 100mcg MK-7 dose provides meaningful cardiovascular protection.

Innovix Labs Full Spectrum Vitamin K2: How does Innovix Labs K2 compare to single-form K2 supplements?

Innovix Labs is the only product in the category offering both MK-4 and MK-7 forms, providing broader tissue coverage. Single-form MK-7 products like NOW Foods are more affordable but miss the tissue-specific MK-4 benefits. The 4.7-star rating from over 7,400 reviews indicates strong effectiveness.

Innovix Labs Full Spectrum Vitamin K2: Is Innovix Labs K2 effective without adding vitamin D?

K2 works independently to activate calcium-directing proteins, so it provides bone and cardiovascular benefits even without supplemental D. However, the synergy between K2 and D is well-documented, and most people benefit from taking both, especially those with limited sun exposure.

Innovix Labs Full Spectrum Vitamin K2: How big are the Innovix Labs K2 softgels?

The softgels are small and compact, making them easy to swallow for most adults. The bottle dimensions are approximately 2 x 2 x 3.5 inches, which is quite portable. The 90-count bottle provides a convenient three-month supply.

Innovix Labs Full Spectrum Vitamin K2: How should I store Innovix Labs K2?

Store in a cool, dry place away from direct sunlight. No refrigeration is required. Keep the bottle tightly sealed after each use. The product weighs only 1.76 ounces, making it easy to travel with.

Innovix Labs Full Spectrum Vitamin K2: What is the shelf life of Innovix Labs K2?

The product has a standard supplement shelf life of about two years from manufacture. Check the expiration date on the bottle. Store properly to maintain potency throughout the product life. The oil-based softgel helps protect the K2 from degradation.

Innovix Labs Full Spectrum Vitamin K2: Is Innovix Labs K2 suitable for vegetarians?

The softgel shell likely contains gelatin, making it unsuitable for strict vegetarians or vegans. The K2 ingredients themselves are produced through fermentation. Vegetarians should check the label or contact Innovix Labs for specific softgel shell composition.

Innovix Labs Full Spectrum Vitamin K2: Is Innovix Labs K2 gluten-free?

Innovix Labs Full Spectrum K2 is formulated to be free from major allergens including gluten. It is also soy-free, which is a notable advantage over many K2 supplements that use soy-derived ingredients. Suitable for those with celiac disease or gluten sensitivity.

Innovix Labs Full Spectrum Vitamin K2: Can I take Innovix Labs K2 on a keto or carnivore diet?

Yes, the softgel contains zero carbohydrates and is compatible with ketogenic, carnivore, and low-carb diets. Vitamin K2 is naturally found in animal foods like natto, cheese, and organ meats, making supplementation a natural complement to these dietary approaches.

Life Extension Super K: Is Life Extension Super K safe for daily use?

Yes, the combination of K1, MK-4, and MK-7 in Life Extension Super K is well-tolerated for daily use in healthy adults. Life Extension is a research-focused brand with over 40 years of experience. The main caution is for people on warfarin due to the high K1 content (1500mcg).

Life Extension Super K: Can I take Life Extension Super K if I am on warfarin?

No, Life Extension Super K contains 1500mcg of vitamin K1, which directly counteracts warfarin. This is a much higher K1 dose than most K2-only supplements. If you take warfarin, consult your doctor before taking any vitamin K supplement, but this product is particularly problematic.

Life Extension Super K: Is the high vitamin K1 dose in Life Extension Super K safe?

The 1500mcg K1 dose is safe for healthy adults not on anticoagulants. K1 is the primary clotting form of vitamin K and is found naturally in leafy greens. This amount is roughly equivalent to eating a large serving of kale or spinach. It supports healthy blood coagulation.

Life Extension Super K: Are there any side effects from Life Extension Super K?

Side effects are rare at the doses provided. Some people report mild digestive discomfort when starting. The oil-based softgel is generally gentle on the stomach. With over 1,500 positive Amazon reviews at 4.6 stars, consumer satisfaction with tolerability is high.

Life Extension Super K: Can I take Life Extension Super K with calcium and vitamin D?

Yes, this is an excellent combination. Life Extension Super K provides comprehensive vitamin K coverage that directs supplemental calcium to bones rather than arteries. The K2 forms (MK-4 and MK-7) are particularly important for calcium metabolism when taking D3 and calcium.

Life Extension Super K: How many Life Extension Super K softgels should I take daily?

The recommended dose is one softgel daily, providing 1500mcg K1, 1000mcg MK-4, and 100mcg MK-7. Take with a fat-containing meal for optimal absorption. The bottle contains 90 softgels for a three-month supply.

Life Extension Super K: Should I take Life Extension Super K with food?

Yes, take with a fat-containing meal since all three forms of vitamin K are fat-soluble. The oil-based softgel provides some lipid carrier, but dietary fat further enhances absorption. A meal with olive oil, avocado, or butter is ideal.

Life Extension Super K: Can I take Life Extension Super K with my Life Extension multivitamin?

Check your multivitamin label for vitamin K content to avoid excessive intake. Life Extension's multivitamins often contain some K already. The combined K1 dose should be considered, especially for coagulation effects. This product is designed as a standalone vitamin K supplement.

Life Extension Super K: How long does a bottle of Life Extension Super K last?

The 90-softgel bottle provides a three-month supply at one softgel daily. At $0.22 per serving, the total bottle cost is approximately $19.51 for 90 days of comprehensive vitamin K supplementation — excellent value for a three-form formula.

Life Extension Super K: Is one softgel of Life Extension Super K enough for osteoporosis prevention?

The 100mcg MK-7 provides the clinically studied dose for bone protection. The 1000mcg MK-4 is well below the Japanese clinical dose of 45mg for osteoporosis treatment. For established osteoporosis, higher MK-4 doses or prescription medications may be needed under medical supervision.

Life Extension Super K: What three forms of vitamin K are in Life Extension Super K?

Life Extension Super K contains all three major vitamin K forms: K1 (phylloquinone, 1500mcg) for blood clotting, MK-4 (menaquinone-4, 1000mcg) for bone and brain tissue, and MK-7 (menaquinone-7, 100mcg) for long-acting cardiovascular protection. No other product offers this breadth.

Life Extension Super K: Why does Life Extension Super K include vitamin K1?

K1 is the primary coagulation form of vitamin K, essential for blood clotting. Many people do not eat enough leafy greens to get adequate K1. Including K1 makes this a truly comprehensive vitamin K supplement rather than just a K2 product.

Life Extension Super K: What is the difference between MK-4 and MK-7 in Life Extension Super K?

MK-4 has a short 6-hour half-life and concentrates in brain, bone, and reproductive tissues. MK-7 has a 72-hour half-life, providing sustained cardiovascular and skeletal protection. Together, they offer complementary tissue coverage and time-release benefits.

Life Extension Super K: Does Life Extension Super K contain any vitamin D?

No, Life Extension Super K is a vitamin K-only formula. Life Extension sells separate D3 products and combined D3+K2 formulas. Keeping them separate allows you to customize your vitamin D dose based on your blood levels without changing your K intake.

Life Extension Super K: What is the softgel shell made of in Life Extension Super K?

The softgel uses a gelatin shell with an oil base inside for fat-soluble vitamin absorption. It is not suitable for vegans or strict vegetarians. The oil matrix helps dissolve all three vitamin K forms for optimal bioavailability.

Life Extension Super K: Is Life Extension Super K effective for preventing arterial calcification?

The MK-7 component at 100mcg activates matrix GLA protein, the body's key inhibitor of vascular calcification. The MK-4 provides additional tissue-specific protection. The Rotterdam Study linked higher menaquinone intake to reduced coronary heart disease risk, supporting this product's cardiovascular claims.

Life Extension Super K: How does Life Extension Super K compare to single-form K2 products?

Life Extension Super K offers the most comprehensive vitamin K formula available, covering K1, MK-4, and MK-7 in a single softgel. Single-form products like NOW MK-7 are cheaper but miss the breadth of K1 and MK-4 benefits. At $0.22/serving, Super K offers exceptional value for its complexity.

Life Extension Super K: Does Life Extension Super K improve bone density?

The 100mcg MK-7 matches the dose shown to reduce bone loss in clinical trials. The MK-4 provides additional bone-specific benefits through osteocalcin activation. Combining K2 with calcium, vitamin D, and weight-bearing exercise maximizes bone density outcomes.

Life Extension Super K: Is Life Extension Super K recommended by doctors?

Life Extension is widely respected in the integrative and longevity medicine communities. Their research-driven approach and high-quality formulations earn frequent practitioner recommendations. The comprehensive three-form vitamin K approach aligns with current nutritional science.

Life Extension Super K: How big are the Life Extension Super K softgels?

The softgels are small-to-medium sized, similar to a standard vitamin E capsule. They are smooth and easy to swallow. The bottle dimensions are approximately 1.8 x 1.8 x 3.4 inches, making it very compact for travel and storage.

Life Extension Super K: How should I store Life Extension Super K?

Store in a cool, dry place away from direct sunlight and heat. No refrigeration is required. The bottle weighs approximately 0.1 pounds. Keep the cap tightly sealed to protect the softgels from moisture and maintain potency.

Life Extension Super K: What does the Life Extension Super K packaging look like?

Life Extension Super K comes in their signature blue and white bottle with the Life Extension logo. The bottle contains 90 softgels for a three-month supply. The label clearly lists all three vitamin K forms and their amounts per softgel.

Life Extension Super K: Is Life Extension Super K suitable for vegetarians?

No, the softgel shell contains gelatin, making it unsuitable for vegetarians and vegans. The vitamin K ingredients themselves are non-animal derived. Vegetarians seeking comprehensive vitamin K support would need to find a capsule-based alternative.

Best Vitamin K2 Supplements (2026)

· Updated April 2026

Lab Tested, Evidence Ranked

Supplement Science Editorial Team·Evidence-Based Supplement Research

Published Mar 11, 2026·Reviewed Apr 24, 2026

2,500+Clinical Studies Cited

5Vitamin K2 (MK-7) products evaluated

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Our Verdict

The best Vitamin K2 supplement delivers MK-7 at 100-200mcg per capsule with high bioavailability, ideally paired with Vitamin D for synergistic bone and cardiovascular support.

Best By Category

#1Best Overall (Full Spectrum)

Innovix Labs Full Spectrum Vitamin K2

Buy Nowon Amazon

#3Best Value MK-7

NOW Foods MK-7 100mcg

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#2Best K2 + D3 Combo

Life Extension Super K

Buy Nowon Amazon

The best vitamin K2 supplement delivers 100-200mcg of MK-7 (menaquinone-7) daily, ideally from natural fermented...

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We evaluated Vitamin K2 supplements across K2 form (MK-7 vs MK-4), dose, Vitamin D inclusion, third-party testing, and value. Our picks prioritize the long-acting MK-7 form for daily convenience and clinical evidence.

As an Amazon Associate, we earn from qualifying purchases. Some links below are affiliate links — this doesn't affect our editorial independence or product ratings. How we evaluate products

How We Chose These Products

Products are ranked using our published scoring methodology — evidence strength, dose adequacy, ingredient form, third-party testing signals, value, and clean-label factors are weighted across the 5 criteria below. Commercial relationships do not determine our editorial rankings.

K2 Form

30%

MK-7 is the preferred form for daily supplementation due to its 72-hour half-life, allowing once-daily dosing. MK-4 has a 6-hour half-life and requires multiple daily doses (typically 15mg 3x/day). Full-spectrum products offering both earn top marks.

Dose Adequacy

25%

MK-7: 100-200mcg daily for bone and cardiovascular support. MK-4: 15mg 3x/day (45mg total) for bone density (Japanese clinical dose). Products should meet evidence-based dose thresholds.

Vitamin D Synergy

20%

Vitamin K2 and D3 work synergistically — D3 increases calcium absorption while K2 directs calcium to bones and away from arteries. Combined products offer convenience and better outcomes.

Third-Party Testing

15%

Independent verification of K2 form and potency. Important because MK-7 is expensive to produce and adulteration with cheaper K1 or MK-4 has been documented.

Value

10%

Cost per serving relative to K2 form, dose, and additional ingredients. MK-7 costs more than MK-4 per microgram but requires far less frequent dosing.

#1 Top Pick

Staff Pick

Innovix Labs Full Spectrum Vitamin K2

InnovixLabs

7,457 Amazon reviews

9.1/10

4.7

The only product in the category delivering both MK-4 and MK-7 forms. MK-7 provides long-acting baseline coverage (72-hour half-life), while MK-4 offers tissue-specific benefits in brain, pancreas, and reproductive organs. Soy-free formulation in an oil-based softgel for fat-soluble absorption.

IngredientMK-4 (500mcg) + MK-7 (100mcg)

Dose500mcg MK-4 + 100mcg MK-7 per softgel

FormSoftgel

TestingThird-Party Tested

500mcg MK-4 + 100mcg MK-7 per softgelClinical range: 100-200 mcg MK-7 daily

Clinical dose

$0.30/serving$26.95 · 90 Softgels

Pros

Full spectrum: MK-4 + MK-7 combined
Oil-based softgel for absorption
Soy-free formula

Cons

MK-4 dose below clinical threshold
No vitamin D included

Buy Nowon Amazon

Read full review →

Quick Comparison

#1Innovix Labs Full Spectrum Vitamin K2

9.1/10

InnovixLabs

#1 Top Pick

7,457 Amazon reviews

Best for: full-spectrum K2 with both MK-4 and MK-7

MK-4 (500mcg) + MK-7 (100mcg) · 500mcg MK-4 + 100mcg MK-7 per softgel

Softgel · Third-Party Tested

$26.95

$0.30/serving

Buy Nowon Amazon

#2Life Extension Super K

9/10

Life Extension

1,585 Amazon reviews

Best for: comprehensive vitamin K formula with all three K forms

K1 (1500mcg) + MK-4 (1000mcg) + MK-7 (100mcg) · 1500mcg K1 + 1000mcg MK-4 + 100mcg MK-7 per softgel

Softgel · Third-Party Tested

$12.95

$0.14/serving

Buy Nowon Amazon

#3NOW Foods MK-7 100mcg

8.7/10

NOW Foods

8,359 Amazon reviews

Best for: value MK-7 supplement

Vitamin K2 as MK-7 · 100mcg MK-7 per capsule

Veg Capsule · GMP Certified, Third-Party Tested

$10.00

$0.08/serving

Buy Nowon Amazon

#4Sports Research Vitamin K2 MK-7 100mcg with Coconut MCT Oil

8.5/10

Sports Research

13,973 Amazon reviews

Best for: Bone and cardiovascular health — especially those pairing with Vitamin D3 who need K2 to direct calcium properly

Vitamin K2 (as Menaquinone-7 / MK-7) 100mcg from fermented chickpeas + Coconut MCT Oil · 100mcg Vitamin K2 as MK-7 per softgel, once daily

Softgel · Third-Party Tested

$17.95

$0.30/serving

Buy Nowon Amazon

#5Jarrow Formulas MK-7 90mcg

8.5/10

Jarrow Formulas

5,097 Amazon reviews

Best for: Quality MK-7 softgel at a good price

Vitamin K2 as MK-7 · 90mcg MK-7 per softgel

Softgel · Third-Party Tested

$16.99

$0.28/serving

Buy Nowon Amazon

#	Product	Best For	Ingredient & Dose	Form & Testing	Price	Rating
1	Innovix Labs Full Spectrum Vitamin K2 #1 Top Pick 7,457 Amazon reviews	full-spectrum K2 with both MK-4 and MK-7	MK-4 (500mcg) + MK-7 (100mcg) 500mcg MK-4 + 100mcg MK-7 per softgel	Softgel 90 Softgels Third-Party Tested	$26.95 $0.30/serving	9.1/10	Buy Nowon Amazon
2	Life Extension Super K 1,585 Amazon reviews	comprehensive vitamin K formula with all three K forms	K1 (1500mcg) + MK-4 (1000mcg) + MK-7 (100mcg) 1500mcg K1 + 1000mcg MK-4 + 100mcg MK-7 per softgel	Softgel Third-Party Tested	$12.95 $0.14/serving	9/10	Buy Nowon Amazon
3	NOW Foods MK-7 100mcg 8,359 Amazon reviews	value MK-7 supplement	Vitamin K2 as MK-7 100mcg MK-7 per capsule	Veg Capsule GMP Certified, Third-Party Tested	$10.00 $0.08/serving	8.7/10	Buy Nowon Amazon
4	Sports Research Vitamin K2 MK-7 100mcg with Coconut MCT Oil 13,973 Amazon reviews	Bone and cardiovascular health — especially those pairing with Vitamin D3 who need K2 to direct calcium properly	Vitamin K2 (as Menaquinone-7 / MK-7) 100mcg from fermented chickpeas + Coconut MCT Oil 100mcg Vitamin K2 as MK-7 per softgel, once daily	Softgel 60.0 Count Third-Party Tested	$17.95 $0.30/serving	8.5/10	Buy Nowon Amazon
5	Jarrow Formulas MK-7 90mcg 5,097 Amazon reviews	Quality MK-7 softgel at a good price	Vitamin K2 as MK-7 90mcg MK-7 per softgel	Softgel 60 Servings Third-Party Tested	$16.99 $0.28/serving	8.5/10	Buy Nowon Amazon

Detailed Reviews

#1 Top Pick

InnovixLabs Full Spectrum Vitamin K2-90 Softgels with 600 mcg of Trans Form MK7 and MK4 - Supports General Health and Bone Strength - Soy and Gluten Free K2 Vitamin Supplement

InnovixLabs

7,457 Amazon reviews

9.1/10

(7,457)

IngredientMK-4 (500mcg) + MK-7 (100mcg)

Dose500mcg MK-4 + 100mcg MK-7 per softgel

FormSoftgel

TestingThird-Party Tested

500mcg MK-4 + 100mcg MK-7 per softgelClinical range: 100-200 mcg MK-7 daily

Clinical dose

$0.30/serving$26.95 · 90 Softgels

Ideal for: full-spectrum K2 with both MK-4 and MK-7

Not ideal for: Those wanting vitamin D included or seeking the lowest price.

Pros

Full spectrum: MK-4 + MK-7 combined
Oil-based softgel for absorption
Soy-free formula
100mcg MK-7 (clinically relevant dose)

Cons

MK-4 dose below clinical threshold
No vitamin D included
Smaller brand recognition

Buy Nowon Amazon

Read full MK-4 (500mcg) + MK-7 (100mcg)guide →

Super K with Advanced K2 Complex - 90 ct

Life Extension

1,585 Amazon reviews

9/10

(1,585)

The most comprehensive vitamin K formula available — combines K1, MK-4, and MK-7 in a single softgel with an oil base. K1 supports coagulation, MK-4 targets bone and brain tissue, MK-7 provides long-acting cardiovascular protection. Excellent value for a three-form formula.

IngredientK1 (1500mcg) + MK-4 (1000mcg) + MK-7 (100mcg)

Dose1500mcg K1 + 1000mcg MK-4 + 100mcg MK-7 per softgel

FormSoftgel

TestingThird-Party Tested

1500mcg K1 + 1000mcg MK-4 + 100mcg MK-7 per softgelClinical range: 100-200 mcg MK-7 daily

Clinical dose

$0.14/serving

Ideal for: comprehensive vitamin K formula with all three K forms

Not ideal for: Those on warfarin or anticoagulants (high K1 dose may interfere).

Pros

All three K forms: K1 + MK-4 + MK-7
Oil-based softgel
Excellent value at $0.22/serving
Research-driven formulation

Cons

High K1 may interact with warfarin
MK-4 dose below clinical threshold
Complex multi-form formula

Buy Nowon Amazon

Read full K1 (1500mcg) + MK-4 (1000mcg) + MK-7 (100mcg)guide →

NOW Foods Supplements, MK-7 Vitamin K-2 100 mcg, Cardiovascular Support, Supports Bone Health, 60 Veg Capsules

NOW Foods

8,359 Amazon reviews

8.7/10

(8,359)

Delivers the clinically studied 100mcg MK-7 dose at an unbeatable $0.12/serving. GMP-certified and third-party tested. NOW Foods is one of the most established supplement brands. Simple, clean formula with no unnecessary additives.

IngredientVitamin K2 as MK-7

Dose100mcg MK-7 per capsule

FormVeg Capsule

TestingGMP Certified, Third-Party Tested

100mcg MK-7 per capsuleClinical range: 100-200 mcg MK-7 daily

Therapeutic dose

$0.08/serving

Ideal for: value MK-7 supplement

Not ideal for: Those needing vitamin D or wanting a softgel with oil base.

Pros

Best value at $0.12/serving
GMP certified
Clean single-ingredient formula
Full 100mcg clinical dose

Cons

Veg capsule (no oil base)
No vitamin D
MK-7 only (no MK-4)

Buy Nowon Amazon

Read full Vitamin K2 as MK-7guide →

Sports Research Vitamin K2 MK-7 100mcg with Coconut MCT Oil — view 1 of 5

Sports Research® Vitamin K2 as MK-7 100mcg with Coconut MCT Oil - 60 Veggie Softgels (2 Month Supply) Vegan Certified, Non-GMO Verified, Gluten & Soy Free

#2 Best Sellerin Vitamin K1 Supplements

Sports Research

13,973 Amazon reviews

8.5/10

(13,973)

Sports Research uses chickpea-derived MK-7 to offer a soy-free K2 in a Vegan Certified PlantGel softgel — a genuine formulation advantage over the many soy-based K2 products on the market, enhanced further by the coconut MCT oil base.

IngredientVitamin K2 (as Menaquinone-7 / MK-7) 100mcg from fermented chickpeas + Coconut MCT Oil

Dose100mcg Vitamin K2 as MK-7 per softgel, once daily

FormSoftgel

TestingThird-Party Tested

100mcg Vitamin K2 as MK-7 per softgel, once dailyClinical range: 100-200 mcg MK-7 daily

Therapeutic dose

$0.30/serving$17.95 · 60.0 Count

Ideal for: Bone and cardiovascular health — especially those pairing with Vitamin D3 who need K2 to direct calcium properly

Not ideal for: Anyone on warfarin or other vitamin K-antagonist anticoagulants — K2 directly conflicts with these medications

Pros

MK-7 form — the most bioavailable and longest half-life form of K2
Sourced from fermented chickpeas, not soy (unlike most K2 supplements)
Coconut MCT oil co-formulation enhances fat-soluble K2 absorption
Vegan Certified PlantGel capsule — carrageenan-free and bovine-free

Cons

60-count/2-month supply priced at $17.95 — moderate value
Contraindicated with warfarin — limits use for a significant patient population
No Informed Sport or IFOS-level certification — third-party tested but less specific

Buy Nowon Amazon

Read full Vitamin K2 (as Menaquinone-7 / MK-7) 100mcg from fermented chickpeas + Coconut MCT Oilguide →

Jarrow Formulas MK-7 90 mcg - Bioactive Form of Vitamin K2-60 Servings (Softgels) - for Bone & Cardiovascular Health - Vitamin K2 MK-7 Dietary Supplement - Gluten-Free

Jarrow Formulas

5,097 Amazon reviews

8.5/10

(5,097)

Uses MenaQ7 — the most clinically studied form of MK-7 derived from natto fermentation. Oil-based softgel enhances absorption of fat-soluble vitamin K2. Jarrow Formulas is a trusted brand with strong quality control. Good balance of quality and value.

IngredientVitamin K2 as MK-7

Dose90mcg MK-7 per softgel

FormSoftgel

TestingThird-Party Tested

90mcg MK-7 per softgelClinical range: 100-200 mcg MK-7 daily

Partial dose

$0.28/serving$16.99 · 60 Servings

Ideal for: Quality MK-7 softgel at a good price

Not ideal for: Those wanting 100mcg+ dose or added vitamin D.

Pros

MenaQ7 (most clinically studied MK-7)
Oil-based softgel for absorption
Trusted Jarrow Formulas brand
Good value at $0.15/serving

Cons

90mcg (slightly below 100mcg standard)
No vitamin D included
Smaller bottle (60 softgels)

Buy Nowon Amazon

Read full Vitamin K2 as MK-7guide →

Pairs Well With

Frequently taken together based on complementary benefits

Vitamin D3

Sports Research Vitamin D3 + K2 (5000 IU)

Staff Pick

5,000 IU D3 + 100mcg K2

(51,867)$0.07/serving

Buy Nowon Amazon

Calcium

Integrative Therapeutics OsteoPrime Forte

4 capsules daily with a meal (can be split as 2 capsules twice daily with a meal)

(369)$0.23/serving

Buy Nowon Amazon

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How to Choose

Vitamin K2 comes in two main forms: MK-7 (menaquinone-7) and MK-4 (menaquinone-4). MK-7 has a 72-hour half-life, making it ideal for once-daily dosing at 100-200mcg. MK-4 has a 6-hour half-life and requires multiple daily doses at much higher amounts (15mg 3x/day in Japanese bone studies). For most people, MK-7 at 100mcg daily is the practical choice. Pairing K2 with vitamin D3 is synergistic — D3 increases calcium absorption, while K2 ensures calcium goes to bones rather than accumulating in arteries. If you take warfarin or other anticoagulants, consult your doctor before supplementing vitamin K in any form.

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Innovix Labs Full Spectrum Vitamin K2

9.1/10$0.30/servingBest for: full-spectrum K2 with both MK-4 and MK-7

The best Vitamin K2 supplement delivers MK-7 at 100-200mcg per capsule with high bioavailability, ideally paired with Vitamin D for synergistic bone and cardiovascular support.

Evidence:RCT (2013) · n=244 · high confidence[#1]

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Bottom line: Get 1,000-1,200mg calcium daily from diet plus supplements if needed. Calcium citrate with vitamin D3 and K2 is the optimal bone-support stack.

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Frequently Asked Questions

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

MK-7 (from natto fermentation) has a 72-hour half-life, so 100-200mcg once daily maintains stable blood levels. MK-4 (found in animal foods) has a 6-hour half-life and requires 15mg three times daily for bone benefits. Most supplements use MK-7 for convenience and evidence-based dosing.

Should I take vitamin K2 with vitamin D?

Yes, they work synergistically. Vitamin D increases calcium absorption from the gut, while K2 activates proteins (osteocalcin and matrix GLA protein) that direct calcium to bones and away from arteries. Taking D without K2 may increase arterial calcification risk over time.

Evidence:RCT (2013) · n=244 · high confidence[#1]

Can I take vitamin K2 if I am on blood thinners?

If you take warfarin (Coumadin), consult your doctor before taking any vitamin K supplement. Vitamin K directly counteracts warfarin's mechanism. However, newer anticoagulants (DOACs like apixaban, rivaroxaban) do not interact with vitamin K, so K2 supplementation is generally safe with those medications.

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Supplement Guide

References

RCTKnapen MH, Drummen NE, Smit E, Vermeer C, Theuwissen E (2013). Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporosis International. DOI PubMed
ObservationalGeleijnse JM, Vermeer C, Grobbee DE, et al. (2004). Dietary intake of menaquinone is associated with a reduced risk of coronary heart disease: the Rotterdam Study. Journal of Nutrition. DOI PubMed

Best Vitamin K2 Supplements (2026)

Our Verdict

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How We Chose These Products

K2 Form

Dose Adequacy

Vitamin D Synergy

Third-Party Testing

Value

Innovix Labs Full Spectrum Vitamin K2

Pros

Cons

Quick Comparison

Detailed Reviews

InnovixLabs Full Spectrum Vitamin K2-90 Softgels with 600 mcg of Trans Form MK7 and MK4 - Supports General Health and Bone Strength - Soy and Gluten Free K2 Vitamin Supplement

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Super K with Advanced K2 Complex - 90 ct

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NOW Foods Supplements, MK-7 Vitamin K-2 100 mcg, Cardiovascular Support*, Supports Bone Health*, 60 Veg Capsules

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Sports Research® Vitamin K2 as MK-7 100mcg with Coconut MCT Oil - 60 Veggie Softgels (2 Month Supply) Vegan Certified, Non-GMO Verified, Gluten & Soy Free

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Jarrow Formulas MK-7 90 mcg - Bioactive Form of Vitamin K2-60 Servings (Softgels) - for Bone & Cardiovascular Health - Vitamin K2 MK-7 Dietary Supplement - Gluten-Free

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Cons

Pairs Well With

Sports Research Vitamin D3 + K2 (5000 IU)

Integrative Therapeutics OsteoPrime Forte

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Frequently Asked Questions

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

Should I take vitamin K2 with vitamin D?

Can I take vitamin K2 if I am on blood thinners?

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Vitamin D3

Joint Pain

Common Supplement-Drug Interactions Everyone Should Know

References

NOW Foods Supplements, MK-7 Vitamin K-2 100 mcg, Cardiovascular Support, Supports Bone Health, 60 Veg Capsules