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99% positive over last 12 months
100% positive over last 12 months
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Life Extension Super K, vitamin K1, vitamin K2 mk-7, vitamin K2 mk-4, vitamin C, bone/heart/arterial health, 3-month supply, Gluten-Free, 1 Daily, Non-GMO, 90 softgels
Purchase options and add-ons
Brand | Life Extension |
Item Form | Softgel |
Primary Supplement Type | Vitamin k , Vitamin K2 calcium |
Diet Type | Gluten Free |
Flavor | Unflavored |
About this item
- Strong bones, healthy heart—Vitamin K helps maintain your body’s calcium balance, which affects everything from arterial health to bone density health. But it’s hard to get sufficient vitamin K from food. This formula provides a potent dose of 2600 mcg of vitamin K from both K1 and two forms of K2.
- Why you need a vitamin K supplement—Vitamin K1 is found in leafy green vegetables, but it’s hard for your body to absorb this nutrient even if a spinach salad is your go-to lunch.
- Vitamin K, hold the cheese—Vitamin K2 is in meat, eggs and cheeses. Many people limit these foods for health reasons, which can make it hard to get enough. And there’s more than one kind of K2 as well: this supplement has MK-4 and MK-7. MK-4 absorbs fast, while MK-7 stays active in your body much longer. Combining the two gives you the benefits of both.
- Ingredients matter—Sourced using only the finest raw ingredients with the purity and potency your body deserves. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every product we produce.
- Live your healthiest life—For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. That’s why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.
- Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
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PRODUCT CERTIFICATION (1)
Compact by Design (Amazon-developed Certification)products have reduced water and/or air in the product or packaging for more efficient transportation.
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From the brand
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What's in Life Extension supplements?
We use pure, potent ingredients and clinical dosages.
Why is it called “Life Extension”?
Our mission is to help people live their most fulfilling, healthiest life–for as long as possible.
Where are Life Extension supplements manufactured?
99% of our products are manufactured in the U.S.A. Our ingredients are sourced worldwide, whether that’s wild-caught anchovy from Chile for our award-winning fish oil, or ultra-potent curcumin from Indian co-op farms.
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From the manufacturer
What is Super K?
Vitamin K helps maintain your body’s calcium balance, which supports everything from arterial health to healthy bone density. Super K provides THREE kinds of vitamin K to maximize its bone and vascular health benefits: vitamin K1 and two forms of K2 that absorb more rapidly and remain active longer.
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Helps your bones absorb calcium. |
Helps promote a healthy calcium balance in your arteries. |
Research shows people who consume more dietary K2 have healthier cardiovascular systems. |
The MK-7 form of vitamin K2 stays available in the body for up to 48 hours. |
Product Description
Vitamin K helps maintain your body’s calcium balance, which affects everything from arterial health to healthy bone density. But it’s hard to get sufficient vitamin K from food. So if you’re trying to maintain bone or arterial health, a vitamin K supplement is a good idea. Super K provides THREE kinds of vitamin K to maximize its health benefits: vitamin K1 and two forms of K2, menaquinone-4 (MK-4) and menaquinone-7 (MK-7). Taking Super K every day is a good way to make sure you’re getting enough of this essential nutrient for bone and vascular heath.
Product details
- Product Dimensions : 1.86 x 1.86 x 3.41 inches; 2.08 ounces
- Item model number : 02334
- Date First Available : May 6, 2019
- Manufacturer : Life Extension
- ASIN : B07RL1J9BV
- Country of Origin : USA
- Best Sellers Rank: #2,145 in Health & Household (See Top 100 in Health & Household)
- #1 in Vitamin K1 Supplements
- Customer Reviews:
Compare with similar items
This Item Life Extension Super K, vitamin K1, vitamin K2 mk-7, vitamin K2 mk-4, vitamin C, bone/heart/arterial health, 3-month supply, Gluten-Free, 1 Daily, Non-GMO, 90 softgels | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | -25% $22.50$22.50 List: $30.00 | $27.31$27.31 | -26% $15.44$15.44 List: $20.99 | $9.97$9.97 | $6.11$6.11 | $45.00$45.00 |
Price Per Unit | $0.25 / Count | $0.91 / Count | $0.51 / Count | $0.08 / Count | $0.06 / Count | $0.75 / Count |
Delivery | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 | — |
Customer Ratings | ||||||
Easy to swallow | 4.7 | 4.9 | 4.6 | 4.6 | 4.8 | — |
Value for money | 4.4 | 4.2 | 4.2 | 4.2 | 4.6 | — |
Flavor | 3.8 | 4.7 | 4.5 | 4.7 | 4.5 | — |
Absorbency | 4.6 | — | 4.4 | 4.5 | 4.7 | — |
Sold By | Amazon.com | Life Extension Buyers Club | Amazon.com | Bronson Laboratories | Amazon.com | koncentratedk |
primary supplement | Vitamin k , Vitamin K2 calcium | Vitamin K2 | Vitamin-d | — | Vitamin K | Multivitamins |
form | Softgel | Capsule | Softgel | Tablet | Tablet | Capsule |
unit count | 90 | 30 | 30 | 120 | 100 | 60 |
flavor | Unflavored | Unflavored | Unflavored | Unflavored | Unflavored | Unflavored |
target gender | unisex | unisex | unisex | — | unisex | unisex |
weight | 0.13 pounds | 0.06 pounds | 0.01 ounces | 0.11 pounds | 0.04 grams | — |
specific uses | Helps maintain bone health, Supports heart & arterial health, Contains three forms of vitamin K, Supports vascular health by promoting healthy calcium balance | Bone, Heart | Bone | Bone | Bone, Heart | age related benefits |
Videos
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What no one tells you before buying this Vitamin
Growth Vibes Reviews
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Life Extension Super K
Life Extension HPC
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Customer Review: Bottle came all melted. They are stuck.
Eban’s
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Life Extension Super K, 90 Softgel
Life Extension HPC
Important information
Safety Information
Caution: If you are taking anticoagulant or antiplatelet medications, or have a bleeding disorder, consult with your healthcare provider before taking this product.
Ingredients
Vitamin C (as Ascorbyl palmitate) Amount Per Serving : 10 mg %Daily Value:17%,Vitamin K activity Amount Per Serving : 2200 mcg %Daily Value:2750%,From: Amount Per Serving : %Daily Value: ,Vitamin K1 (as phytonadione) Amount Per Serving : 1000 mcg %Daily Value: ,Vitamin K2 (as menaquinone-4) Amount Per Serving : 1000 mcg %Daily Value: ,Vitamin K2 (as menaquinone-7) Amount Per Serving : 200 mcg %Daily Value: , Other Ingredients Extra virgin olive oil, gelatin, glycerin, beeswax, purified water, carob color.
Directions
Take one (1) softgel daily with food, or as recommended by a healthcare practitioner
Legal Disclaimer
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the ease of swallowing, bruising, and quality of the vitamin. They mention it's a small easy to swallow capsule, and helps with bruizing. They also like the value, and energy. That said, some complain about the adhesion of the pills. Opinions are mixed on performance.
AI-generated from the text of customer reviews
Customers like the quality of the vitamin. They mention it's a very good product, has a great formulation, and is of excellent quality. Some say that it works 85% better after a week.
"Good quality, far out expiration date and a reputable company. His is what I look for in supplements" Read more
"The K is very good. I am buying it again." Read more
"...It was about 85% better after a week. My dry mouth and dry eyes are not so dry with K2. I was able to avoid going on restasis because of it...." Read more
"No concerns about the quality - as is typical for this brand...." Read more
Customers like the energy of the vitamin. They say it provides health and healing to their body. They also mention that it helps the body use calcium more efficiently, which can prevent negative health. Customers also say that it keeps calcium in their bones and prevents calcium buildup in their arteries. They mention that the vitamin plays a role in calcium metabolism.
"...Vitamin K2 can also help the body use calcium more efficiently, which can prevent negative health effects from increased calcium intake.." Read more
"...I take it with my Vitamin D. This brand has three types of Vitamin K. Vitamin K is important for bone health & supports your heart and arterial..." Read more
"Great for bone health" Read more
"...It gives me plenty of energy. I will continue to take these" Read more
Customers find the vitamin easy to swallow and digest. They appreciate the small, easy to take capsule.
"Small Gel capsul, easy to swallow." Read more
"...know the importance of Vitamin K in several forms, and these are easy to swallow, even for someone with thyroid nodes...." Read more
"The gel caps are small and easy to swallow." Read more
"...The capsules are certainly small and easy to take, without any aftertaste. Haven't had any negative side effects...." Read more
Customers like the vitamin for its ability to help with bruising. They mention that it clears big bruises in a week, helps cuts and bruises heal fast, and helps them disappear faster. Some say that it helps their skin heal cuts normally and dramatically improves stretch marks and scars.
"One thing I noticed is I do not bruise as easily and not as bad as before." Read more
"...D, it fixed my hand clumsiness, systemic tendinitis, helped my skin heal cuts normally, and dramatically improved/ removed livid stretch marks and..." Read more
"...I've noticed and improvement and much less occurrence of bruising. Now I take it with my calcium because they say it helps calcium absorption." Read more
"I bought these to help bruising on my arms. Vitamin K works well." Read more
Customers like the value of the vitamin. They say it's a great value product.
"Good price for a great vitamin!" Read more
"...good supplement company so I was happy to find this on Amazon at a great price. However they were all stuck together so not sure how fresh they are...." Read more
"...life Extension is known for being a best product and the price is so good on Amazon!" Read more
"...i've ordered this product in the past with no problems. Too expensive to risk ordering again as it's not returnable and it's unclear how to obtain..." Read more
Customers are mixed about the performance of the vitamin. Some mention it works great for all kinds of stuff, while others say it's totally unusable and worthless.
"...Very effective." Read more
"Taking this every day was starting to make me feel light-headed and kind of weak and not good. I think it was too much of the K1...." Read more
"I bought these to help bruising on my arms. Vitamin K works well." Read more
"Of the subscribe and save options this is probably the best but it still isn't great...." Read more
Customers are dissatisfied with the adhesion of the vitamins. They mention that the whole bottle of them are stuck together, the gel caps are stuck, and the soft gels are stuck. The vitamins are clumped together and will not separate.
"I just received my Life extension Super K and all of the pills are stuck together so much if I try to break then apart I'm afraid the capsule will..." Read more
"The pills are all clumped or stuck together . I have to poke them to get them separated. Not happy bout this." Read more
"...a bit of time but when I opened the bottle recently all the soft gels are stuck together and there was no silica pack inside!..." Read more
"I received super k vitamin and the whole bottle of then are stuck together. Probably from hot warehouse" Read more
Customers are dissatisfied with the vitamin's effect on their skin. They mention that it causes chest pains, makes them feel awkward, and sometimes makes them faint. They also say that it doesn't help stiff hip joints and itches.
"...I starting taking these and they elevated my heart rate and sometimes made me feel faint. I stopped taking them and these issues went away...." Read more
"...Used with vitamin D, it fixed my hand clumsiness, systemic tendinitis, helped my skin heal cuts normally, and dramatically improved/ removed livid..." Read more
"Loved taking them but they started giving me chest pains…which is a side effect of this supplement..make sure you check them out before buying...." Read more
"Made me feel awkward after 30 min. Happened twice. I won’t be taking it again" Read more
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I'm happy to take a normal photo of the product and to return it, but Amazon are treating it like contraband.
I tried to escalate this to the Amazon Executive Service, but I received the same obstinate reply back.
This is the first time that I have received bad service from Amazon. I will be purchasing from iHerb instead.
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Great to see this brand in Amazon. I take the Life Extensions K with D and sea iodine. I purchased the Super K for a relative with osteoporosis and cholesterol issues.
Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.