You’re standing in the supplement aisle, staring at two popular vitamin K products: Life Extension Super K and NOW MK7. Both promise to support your heart and bones, but which one actually fits your needs? In this guide, we’ll compare these two heavyweights, break down their key differences, and help you decide with confidence.
Whether you’re new to vitamin K or looking to switch, this comparison covers everything from ingredient profiles to dosage forms. We’ll also share our top picks from the Life Extension lineup, so you can make an informed choice. Let’s dive in.
Pros
- Comprehensive K1 + K2 blend includes both MK-4 and MK-7
- Backed by scientific research and quality testing
- Supports both cardiovascular and skeletal health
- High customer rating of 4.7 out of 5 stars
- Manufactured to high standards: non-GMO, gluten-free, and made in USA
Cons
- Softgel size may be large for some users who have difficulty swallowing pills
- Price is higher than basic vitamin K supplements
- Those on blood thinners should consult a doctor before use due to potential interaction
Life Extension Super K is a dietary supplement combining vitamin K1 and two forms of vitamin K2 (MK-4 and MK-7). It is designed for adults who want to support heart and arterial health while promoting proper calcium utilization. This product is ideal for those concerned about bone density and cardiovascular wellness.
The formula stands out by offering both K1 and two bioavailable K2 forms, ensuring comprehensive coverage. Clinical studies suggest that vitamin K2, particularly MK-7, helps maintain arterial flexibility and directs calcium to bones. Users report improved confidence in their calcium balance regimen.
Life Extension is known for rigorous quality control. Each batch has a Certificate of Analysis, and the softgels are non-GMO, gluten-free, and made in the USA. The 90-count bottle provides a three-month supply if taken as directed.
Some users may find the softgel size slightly large, and the price is premium compared to basic vitamin K supplements. Additionally, those on blood thinners should consult a doctor before use, as vitamin K can interact with anticoagulants.
Life Extension Super K is a well-researched, high-quality supplement for supporting heart and bone health. Its unique blend of K1 and two K2 forms makes it a standout choice. Despite a higher price point, the science-backed formulation and quality manufacturing justify the investment for those prioritizing cardiovascular and skeletal wellness.
Pros
- High potency with 2000 mcg K1 and 1180 mcg K2 per serving.
- Includes both MK-4 and MK-7 forms of vitamin K2 for better absorption.
- Non-GMO, gluten-free, and made in the USA with quality ingredients.
- Once-daily softgel is easy to incorporate into daily routine.
- Backed by Life Extension's reputation for science-based supplements.
Cons
- Softgel size may be challenging for those who have difficulty swallowing pills.
- Lack of customer reviews makes it harder to assess long-term satisfaction.
- The pack of two requires a larger upfront investment compared to a single bottle.
Life Extension Super K is a comprehensive vitamin K supplement designed for adults seeking to support cardiovascular health and bone density. It delivers a potent dose of vitamin K1 and two forms of K2 in a once-daily softgel, making it ideal for those who struggle to get enough K from diet alone.
The formula combines 2000 mcg of vitamin K1 with 1180 mcg of vitamin K2, including both MK-4 and MK-7 forms for optimal bioavailability. This dual-action approach helps maintain calcium balance, directing the mineral to bones and away from arteries, which is crucial for heart health. The once-daily regimen simplifies supplementation.
Each softgel is manufactured in the USA using non-GMO, gluten-free ingredients selected for purity. The product comes in a pack of two 90-count bottles, providing a two-month supply. The packaging is straightforward and the softgels are easy to store.
Potential downsides include the size of the softgels, which may be difficult for some to swallow. Additionally, as a new listing, there are no customer reviews to provide real-world insights. The pack of two also requires a larger upfront cost, though it offers value per serving.
Overall, Life Extension Super K is a well-formulated supplement backed by scientific research. It offers a potent, convenient way to support heart and bone health. For those committed to their wellness regimen and seeking a high-quality vitamin K product, this is a strong choice.
Color: Red
Size: 90 Count (Pack of 2)
Dimensions: 1.86 x 1.86 x 3.41 inches
Weight: 0.26 pounds
Pros
- Comprehensive blend of three vitamin K forms for broad support
- Added vitamin C enhances antioxidant benefits
- Convenient once-daily dosing with small, easy-to-swallow softgels
- Non-GMO and free from common allergens (check label for specifics)
- Pack of 2 offers long-term supply at a reasonable per-serving cost
Cons
- Some users may prefer a single K form for more targeted dosing
- Contains ascorbyl palmitate (fat-soluble vitamin C), which may cause digestive upset in sensitive individuals
- Pack of 2 may be a larger upfront investment compared to single bottles
Life Extension Super K is a comprehensive vitamin K supplement designed for adults who want to support bone density and cardiovascular health. It combines three distinct forms of vitamin K commonly found in green vegetables, cheese, and meats, making it a versatile choice for those seeking a complete K complex.
Each softgel delivers 10mg of vitamin C as ascorbyl palmitate, a fat-soluble form that may enhance absorption. The inclusion of MenaQ7, a clinically studied MK-7, ensures sustained release for all-day support. Users will appreciate the small, easy-to-swallow design and the convenience of a single daily dose.
The pack of 2 contains 300 softgels total, providing a 10-month supply at a competitive price point. The non-GMO formulation aligns with clean supplement preferences, though the softgel capsule may not be suitable for strict vegans (check for gelatin).
Potential drawbacks include the presence of ascorbyl palmitate, which can cause mild digestive issues in some individuals. Additionally, those who prefer a single K form for targeted dosing may find the blend unnecessary. However, for most users, the comprehensive formula offers broad benefits.
Overall, Life Extension Super K is a well-rounded supplement that delivers on its promise of convenient, high-quality vitamin K support. It earns a strong recommendation for anyone looking to simplify their bone and heart health regimen with a single, effective product.
Pros
- Comprehensive natural formula targeting multiple prostate health aspects
- Convenient once-daily dosage with 60 capsules per bottle
- Focused on men's wellness with a trusted brand reputation
- May help reduce common urinary discomforts associated with aging
Cons
- Individual results may vary and require consistent use over time
- Not a substitute for medical advice or treatment for serious conditions
- May interact with certain medications; consult a doctor before use
SUPER BETA PROSTATE Advanced is a dietary supplement specifically formulated to support prostate health and urinary function in men. It is designed for men who want to maintain a healthy prostate as they age, particularly those experiencing mild urinary issues like frequent nighttime trips to the bathroom or a weak stream.
The standout feature of this product is its blend of natural ingredients, including beta-sitosterol, saw palmetto, and other botanicals known for their prostate-supporting properties. Users may notice improved urinary flow and reduced urgency with regular use, though results can take several weeks to become apparent.
The supplement comes in easy-to-swallow capsules, making it simple to incorporate into a daily routine. The bottle contains a 60-count supply, which typically lasts for one month. The packaging is straightforward and functional, with clear labeling of ingredients and dosage instructions.
A potential drawback is that this supplement is not a cure for serious prostate conditions like cancer or BPH, and it should not replace medical treatment. Additionally, some users may experience mild digestive upset, and it may interact with blood thinners or other medications, so consulting a healthcare provider before use is recommended.
Overall, SUPER BETA PROSTATE Advanced offers a well-rounded, natural approach to prostate health for men seeking proactive support. While it is not a miracle solution, it provides a convenient and potentially effective option for maintaining urinary and prostate wellness as part of a healthy lifestyle.
Pros
- Uses trademarked MenaQ7 MK-7 for superior bioavailability
- Vegan, non-GMO, and free from common allergens
- Supports both bone and cardiovascular health in one supplement
- Rigorous GMP quality standards with in-house lab testing
- Long-standing brand reputation for natural products
Cons
- Only available in 100 mcg strength, may not suit those needing higher or lower doses
- Capsule size may be large for some users to swallow
- Requires consistent daily intake for noticeable benefits
NOW MK-7 Vitamin K-2 is a targeted supplement for adults focused on bone density and arterial health. Each vegan capsule provides 100 mcg of MenaQ7, a highly bioavailable form of vitamin K-2 that supports calcium regulation in the body. This product is ideal for those who want to maintain strong bones and a healthy cardiovascular system as part of their daily wellness routine.
The standout feature is the use of MenaQ7 MK-7, a soy-free ingredient that ensures efficient absorption and long-lasting activity in the bloodstream. Real-world performance is backed by NOW's commitment to quality, with GMP certification and third-party testing for stability and potency. Users can expect consistent support for bone mineralization and arterial flexibility when taken as directed.
Design and build quality reflect NOW's decades of experience. The capsules are vegan, non-GMO, and free from gluten, dairy, eggs, and nuts, making them suitable for most dietary preferences. The 120-count bottle offers a convenient four-month supply at one capsule per day, and the packaging is sturdy for daily use.
Potential drawbacks include the fixed 100 mcg dosage, which may not meet the needs of individuals requiring higher or lower amounts. Some users may find the capsules slightly large, though the smooth coating helps with swallowing. As with any supplement, consistent daily intake is necessary to achieve the intended benefits.
Overall, NOW MK-7 Vitamin K-2 is a reliable choice for supporting bone and heart health. Its high-quality ingredient, clean label, and trusted brand reputation make it a solid addition to any wellness regimen. For those seeking a vegan, allergen-free K-2 supplement, this product delivers excellent value.
Buying Guide: What to Look for in a Vitamin K Supplement
Before you hit that buy button, consider a few key factors that separate a good vitamin K supplement from a great one. Here’s what we evaluated in our comparison.
1. Forms of Vitamin K: K1, K2, MK-4, and MK-7
Vitamin K isn’t a single nutrient; it’s a family of compounds. K1 (phylloquinone) is found in leafy greens and supports blood clotting. K2 comes in several forms, with MK-4 and MK-7 being the most common in supplements. MK-7 is more bioavailable and stays in your bloodstream longer, making it ideal for arterial and bone health.
Life Extension Super K includes K1 plus both MK-4 and MK-7, offering a broad-spectrum approach. NOW MK7, as the name suggests, focuses solely on MK-7. If you want comprehensive coverage, the multi-form option might be better. For a deeper dive into vitamin K’s role in circulation, check out our guide to nutrients for healthy circulation.
2. Dosage and Bioavailability
Bioavailability matters because your body needs to absorb and use the vitamin effectively. MK-7 is fat-soluble, so taking it with food enhances absorption. Life Extension Super K provides a hefty dose of MK-7 (100 mcg per softgel) along with MK-4 and K1. NOW MK7 offers 100 mcg of MK-7 per capsule, which is a solid daily dose.
Consider your diet and any health conditions. If you’re already eating plenty of leafy greens, you might only need the MK-7 form. If you’re looking for a comprehensive boost, the Super K formula covers all bases. For more on how these nutrients support your cardiovascular system, see our supplements for healthy blood flow.
3. Additional Ingredients and Purity
Some vitamin K supplements include extra ingredients for synergy or preservation. Life Extension Super K contains a small amount of vitamin C (as ascorbyl palmitate) to enhance stability. It’s also non-GMO and gluten-free, which is a plus for many users.
NOW MK7 is also non-GMO and free from common allergens. Both brands are reputable, but if you prefer a formula with added antioxidants, the Super K might edge ahead. Always check the label for fillers or artificial additives.
4. Value and Supply
Think about how long a bottle will last you. Life Extension Super K comes in various sizes, from 90 softgels to a 150-softgel bottle, giving you up to 5 months of supply. NOW MK7 typically offers 100 or 120 capsules, which is about a 3-4 month supply. If you’re buying for the long haul, larger packs can be more convenient.
Also, consider bundle options. Life Extension offers a pack of two 90-softgel bottles, which is great for stocking up. For a comparison of another popular vitamin K product, read our sports research D3 K2 vs NOW D3 K2 article.
Final Thoughts
Choosing between Life Extension Super K and NOW MK7 comes down to your specific health goals. If you want a comprehensive vitamin K supplement that includes K1, MK-4, and MK-7 for broad support, go with Life Extension Super K, Vitamin K1 and K2. If you prefer a simpler, high-dose MK-7 only option, NOW MK7 is a solid choice, but we recommend the Super K for its full-spectrum formula. For those who want a longer supply, the Life Extension Super K, 150 Softgels is an excellent value.
Frequently Asked Questions
What is the difference between MK-4 and MK-7?
MK-4 is a short-acting form of vitamin K2 found in animal products, while MK-7 is a longer-acting form from fermented foods like natto. MK-7 is more effective at maintaining steady blood levels, making it the preferred choice for daily supplementation.
Can I take vitamin K with blood thinners?
If you’re on blood thinners like warfarin, consult your doctor before taking vitamin K. Vitamin K can interfere with anticoagulant medications, so medical guidance is essential.
How long does it take to see benefits from vitamin K2?
Some users report improvements in energy and well-being within a few weeks, but for bone and heart health, consistent use over several months is recommended. Consistency is key.
Is it better to take vitamin K with vitamin D?
Yes, vitamin K2 works synergistically with vitamin D3 to direct calcium into bones and teeth, rather than soft tissues. Many supplements combine them, but you can also take them separately. For more on this, check our D3 K2 comparison.
