Vitamin K supplements are crucial for maintaining several vital bodily functions, primarily supporting bone density, cardiovascular health, and proper blood clotting. These supplements typically contain various forms of vitamin K, each with distinct benefits for calcium regulation and arterial elasticity. Products were evaluated based on their specific vitamin K forms, dosage, additional ingredients, user reviews, and feature analysis.
Life Extension Super K, Vitamin K Supplement, 2000 Mcg Vitamin K and 1180 Mcg Vitamin K2, Heart Health, Once-Daily, 90 Softgels
$22.50
Life Extension Super K offers a comprehensive blend of K1, K2 MK-7, and MK-4, specifically targeting heart, arterial, and bone health with a generous 3-month supply.
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Puritan's Pride Premium Vitamin K 100mcg, Dietary Supplement for Bone, Joint, and Blood Clotting Health Support, 100 Day Supply, 100 Tablets
$5.16
Puritan's Pride Premium Vitamin K provides a straightforward 100mcg dose of Vitamin K with a 100-day supply, offering essential support at an accessible price point.
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THORNE - Vitamin K - Vitamins K1 and K2 (as MK-4 and MK-7) Capsule Supplement - Supports Strong Bones* - Clinically Studied Ingredients - Third-Party Certified - Gluten, Dairy & Soy-Free - 60 Capsules
$30.30
THORNE's Vitamin K supplement delivers a clinically studied, comprehensive formula of K1, K2 MK-4, and MK-7, emphasizing purity and efficacy for bone and heart health.
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- OPTIMAL BLOOD HEALTH: Each tablet provides a 100mcg dose of Vitamin K, an essential nutrient that plays a role in the synthesis of prothrombin, which is necessary for normal blood clotting processes*
- BONE AND JOINT HEALTH: Vitamin K is an excellent complement to Calcium and Vitamin D, playing a role in synthesizing a key protein in bone formation*
- JOINT HEALTH: Vitamin K supports joint health.* A study found that seniors with higher Vitamin K intake had better joint health compared to those with lower intake, highlighting Vitamin K's role in maintaining joint wellness*
- 3-MONTH SUPPLY: Each bottle contains 100 tablets, providing a convenient and ample 100-day supply. This makes it simple to incorporate Vitamin K into your daily health routine, ensuring you stay consistent with your wellness goals
- Heart & arterial health — Numerous studies show that vitamin K supports heart and arterial health, with higher vitamin K2 intake being correlated with a healthy cardiovascular system.
- Helps maintain calcium balance — Vitamin K helps you incorporate calcium into your bones. As a part of maintaining “calcium balance”, this process helps keep calcium out of your arteries.
- Vitamin K1 + two forms of K2 — It’s hard to get enough vitamin K from your diet. Super K provides vitamin K1 and two forms of bioavailable K2 to help you get enough daily vitamin K!
- Science matters – Expert formulators design our supplement formulas, and a Certificate of Analysis is available for every Life Extension product.
- Bone support supplement: contains one 30 count bottle of Nature Made Vitamin K2 100 mcg Softgels for a 30-day supply
- Nature Made Vit K2 softgels help support healthy bones
- This Vitamin K2 MK-7 form supplement also works with the calcium in your body to support healthy bones
- Nature Made K2 Vitamin supplement; Adults, take one Vitamin K2 softgel daily with water and a meal
- Comprehensive Formula: Provides 3 clinically studied types of vitamin K for optimal health – vitamin K1, vitamin K2 as MK-4, and vitamin K2 as MK-7
- Bone Health: Pairs with vitamin D to contribute to bone strength and density, and with magnesium to direct calcium to the bones and away from soft tissues like blood vessels*
- Heart Health: Helps to maintain the health and elasticity of the arteries and supports the normal ability of the blood to clot*
- Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
- Triple The Support Complex: Provides both Vitamin K1 and two forms of Vitamin K2, Vitamin K2 MK4 (Menatetrenone-4) and Vitamin K2 MK7 (Menaquinone-7).
- Bone Health Support: Vitamin K Triple Play is scientifically formulated to help support strong bones.*
- Superior Quality: Laboratory tested and free of GMOs and Gluten. Bronson products are in-house tested and carefully manufactured by trained professionals in our state-of-the-art facility that is located in Hauppauge, New York.
- Trusted Since 1960: The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation firsthand with their patients. Bronson Vitamins have been consistently mentioned by top medical...
- Vitamin K2 as Menatetrenone MK-4 is the only active ingredient
- 240 Servings in Every Bottle
- Non-GMO and Gluten Free
- 100mcg of Vitamin K2 in every serving - 1 Serving: Just 1 Capsule
- Triple The Support Complex: Provides both Vitamin K1 and two forms of Vitamin K2, Vitamin K2 MK4 (Menatetrenone-4) and Vitamin K2 MK7 (Menaquinone-7).
- Bone Health Support: Vitamin K Triple Play is scientifically formulated to help support strong bones.*
- Superior Quality: Laboratory tested and free of GMOs and Gluten. Bronson products are in-house tested and carefully manufactured by trained professionals in our state-of-the-art facility that is located in Hauppauge, New York.
- Trusted Since 1960: The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation firsthand with their patients. Bronson Vitamins have been consistently mentioned by top medical...
- Micro Ingredients offers a 3-in-1 full spectrum vitamin K softgel complex that contains the biologically active forms MK4, MK7, and K1. The softgels are infused with a healthy coconut oil carrier to maximize overall absorption.
- Each pouch offers 360 coconut oil infused softgels that are in a daily 2 softgel serving size. This delivers 1,500mcg of vitamin K1 and K2 as 1,000mcg MK4 and 100mcg MK7 per dose, which lasts up to 180 servings.
- Taking a complete vitamin K formula offers a more stable supplement. It may provide support for calcium absorption that promotes benefits towards heart, bone, joint, and teeth health.
- Combining the fat soluble vitamin K with a healthy coconut oil fat promotes easier absorption and a more complete nutrient uptake with minimal waste. This optimizes replenishment of important K levels over time.
- Vitamin K2 MK-7 (Menaquinone-7) is the only active ingredient
- 240 Servings of Vitamin K in Every Bottle
- Softgels, GMO-Free, and Gluten Free
- 100mcg of Vitamin K2 in every serving - 1 Serving: Just 1 Softgel
- Full Spectrum K2 Supplement with both essential forms of K2 MK4 and MK7 in a balanced ratio designed to promote healthy bones arteries and brain function by supporting calcium transport into bones instead of soft tissues
- Easily Absorbed with bioactive TRANS forms of vitamin K2 MK7 and MK4 that are easily absorbed by your body for maximum benefits
- Powerful Vitamin MK4 supports normal cognitive health with MK4 vitamin K2 an essential nutrient naturally found in the brain fetus and breast milk known to support brain function and a developing fetus
- Third-Party Tested with all batches of our K2 vitamins undergoing rigorous third-party testing for purity potency and freshness and encapsulated tested and bottled in a cGMP certified facility in California for quality and reliability
This article is part of our complete guide Vitamins & Supplements — browse all our comparisons and buying guides.
Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Vitamin K Supplements
Understanding Vitamin K Forms and Their Benefits
When selecting a Vitamin K supplement, the specific forms of the vitamin included are paramount. Vitamin K1 (phylloquinone) is primarily known for its role in blood clotting, while Vitamin K2 (menaquinone) is crucial for bone and cardiovascular health, directing calcium to the bones and away from arteries. K2 itself has different subtypes, notably MK-4 and MK-7. Products like Life Extension Super K and Bronson Vitamin K Triple Play offer a comprehensive blend of K1, K2 MK-4, and K2 MK-7, aiming to provide broad-spectrum benefits. In practice, users often seek supplements that include both MK-4 and MK-7, as they have different half-lives and roles in the body. Conversely, simpler formulations like 365 by Whole Foods Market Vitamin K or Puritan's Pride Premium Vitamin K typically focus on K1 or a single form of K2, which might be sufficient for specific needs but less comprehensive.
Dosage and Supply Duration
The dosage and number of servings per container are practical considerations. Daily dosages for Vitamin K supplements can vary significantly, from 100mcg found in Puritan's Pride Premium Vitamin K to higher concentrations in multi-form complexes. A longer supply duration, such as the 3-month supply offered by Life Extension Super K or the 100-day supply from Puritan's Pride, can be more convenient and cost-effective in the long run. It is important to compare the total dosage provided per serving and assess if it aligns with individual health goals or professional recommendations. Some products, while premium, may offer fewer servings, requiring more frequent reordering.
Absorption Enhancers and Dietary Certifications
As Vitamin K is a fat-soluble vitamin, its absorption can be significantly enhanced when taken with dietary fat. Several manufacturers, including Sports Research® and NatureBell, formulate their Vitamin K supplements with coconut oil or MCT oil to improve bioavailability. This can be a critical factor for maximizing the efficacy of the supplement. Furthermore, dietary restrictions and preferences often dictate choices. Many products, such as Life Extension Super K, Bronson Vitamin K Triple Play, and THORNE - Vitamin K, are certified gluten-free and non-GMO, catering to a wider range of users. For those with specific allergen concerns, THORNE also offers dairy and soy-free options, reflecting a commitment to purity and broad consumer accessibility.
Pros & Cons
Life Extension Super K, Vitamin K Supplement, 2000 Mcg Vitamin K and 1180 Mcg Vitamin K2, Heart Health, Once-Daily, 90 Softgels
Pros
- Features a comprehensive blend of Vitamin K1, K2 MK-7, and K2 MK-4 for broad support.
- Specifically targets heart, arterial health, and calcium balance, addressing key health concerns.
- Offers a convenient 3-month supply, reducing the frequency of reordering.
- Certified gluten-free and non-GMO, appealing to users with dietary sensitivities.
Cons
- The comprehensive formulation may result in a higher price point compared to single-form supplements.
- Softgel format might not be preferred by all users over tablets or capsules.
Bronson Vitamin K Triple Play (Vitamin K2 MK7 / Vitamin K2 MK4 / Vitamin K1) Full Spectrum Complex Vitamin K Supplement, 90 Capsules
Pros
- Provides a 'Triple Play' complex with K1, K2 MK-4, and K2 MK-7 for extensive support.
- Formulated to specifically support strong bones, a primary benefit of Vitamin K.
- Laboratory tested and certified free of GMOs and Gluten, indicating superior quality control.
Cons
- The specific ratios of K forms might not be ideal for every individual's tailored needs.
- Capsule format, while common, might be less preferred than softgels for some.
THORNE - Vitamin K - Vitamins K1 and K2 (as MK-4 and MK-7) Capsule Supplement - Supports Strong Bones* - Clinically Studied Ingredients - Third-Party Certified - Gluten, Dairy & Soy-Free - 60 Capsules
Pros
- Contains 3 clinically studied types of Vitamin K (K1, K2 MK-4, K2 MK-7) for optimal health.
- Emphasizes bone health by pairing with Vitamin D and magnesium for calcium direction.
- Proudly gluten, dairy & soy-free, catering to a wide range of dietary restrictions.
- Supports heart health by maintaining arterial elasticity and normal blood clotting.
Cons
- Positioned as a premium product, it may have a higher cost per serving.
- The 60-serving supply might be shorter compared to some other options available.
Common Mistakes to Avoid
Overlooking the Specific Forms of Vitamin K
A common oversight is not differentiating between Vitamin K1 and the various forms of Vitamin K2 (MK-4 and MK-7). Products like 365 by Whole Foods Market Vitamin K simply state "Vitamin K," which typically implies K1, primarily for blood clotting. However, for bone and arterial health, the K2 forms are often more targeted. Failing to check if a supplement includes MK-4 or MK-7, as found in Life Extension Super K or THORNE - Vitamin K, means missing out on the full spectrum of benefits crucial for calcium metabolism.
Ignoring Absorption-Enhancing Ingredients
Vitamin K is a fat-soluble vitamin, meaning it requires fat for optimal absorption. A frequent mistake is selecting a supplement without considering how its bioavailability is optimized. Products such as Sports Research® Vitamin D3 + K2 w/ Coconut Oil or NatureBell Vitamin K Complex explicitly include coconut oil to enhance absorption. Choosing a supplement without such co-factors, especially for those with digestive issues, might lead to less effective nutrient uptake, regardless of the stated dosage.
Not Aligning Supplement Choice with Specific Health Goals
While Vitamin K is broadly beneficial, different formulations prioritize different health outcomes. Some products, like Puritan's Pride Premium Vitamin K, prominently feature "blood clotting health support," alongside bone and joint health. Others, such as Life Extension Super K and THORNE - Vitamin K, place a stronger emphasis on "heart & arterial health" and "calcium balance." A mistake is assuming all Vitamin K supplements equally target all benefits, rather than selecting one whose feature set aligns with specific individual health priorities like arterial calcification prevention versus general bone maintenance.
