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Carlson - Vitamin K2, MK-4 (Menatetrenone), Vitamin K Supplement, Bone & Heart Health, K2 Vitamin, Soy-free, 60 capsules

4.7 4.7 out of 5 stars 723 ratings
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Unflavored
60 Count (Pack of 1)
Brand Carlson
Item Form Capsule
Primary Supplement Type Vitamin K2
Diet Type Gluten Free
Flavor Unflavored

About this item

  • HEALTHY BONES - Promote healthy bones with Carlson Vitamin K2 supplements.
  • CARDIOVASCULAR FUNCTION - Carlson Vitamin K2 supports cardiovascular system function.
  • 5 MG OF VITAMIN K2 - Each capsule of Carlson Vitamin K2 provides 5 mg of Vitamin K2 as MK-4.
  • SOY-FREE - Carlson Vitamin K2 capsules are completely Soy Free.
  • QUALITY GUARANTEED SINCE 1965: All Carlson products are tested by an independent, FDA-registered laboratory for potency and quality.
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
› See more product details
Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.

From the brand

Product Description

vitamin k2 supplements k mk
vitamins and supplements nutrition vitamina active mood immune women men
k2 vitamin supplement vit k
potent nutrients gluten-free preservative-free milk-free supplements
carlson
women owned founded family operated trusted formulas since 1965

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 6 x 5 x 4 inches; 1.41 ounces
  • Item model number ‏ : ‎ P35331
  • Date First Available ‏ : ‎ November 17, 2008
  • Manufacturer ‏ : ‎ Carlson
  • ASIN ‏ : ‎ B001LF39V0
  • Customer Reviews:
    4.7 4.7 out of 5 stars 723 ratings

Inspiration from this brand

Carlson Visit the Store on Amazon
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Important information

Safety Information

Vitamin K can antagonize the effect of anticoagulant, including Warfarin. Do not take this product if you are taking Warfarin without first consulting with your physical. Do not use during pregnancy or breastfeeding. This product is labelled to United States standards and may differ from similar products sold elsewhere in its ingredients, labeling and allergen warnings

Indications

Promotes Bone & System Health

Ingredients

Vitamin K2 (as menatetrenone) Amt Per Serving:5 mg % Daily Value :6250%,,Other Ingredients: Cellulose, mangesium stearate, silica, vegetable stearin, gelatin capsule

Directions

Adults: Take one capsule daily at mealtime. Keep bottle tightly closed. Store away from heat and moisture.

Legal Disclaimer

WARNING: Consuming this product can expose you to chemicals including lead, which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov/food.

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

4.7 out of 5 stars
723 global ratings

Customers say

Customers like the effectiveness, value for money, and quality of the vitamin. They mention it's excellent, thickens the blood, and helps with sensitive teeth. However, some customers have mixed opinions on the expiration date.

AI-generated from the text of customer reviews

Select to learn more
EffectivenessValue for moneyVitamin qualityEase of swallowPain levelSizeTartar controlExpiration date
59 customers mention "Effectiveness"59 positive0 negative

Customers are satisfied with the effectiveness of the vitamin. They mention it's excellent, a great quality supplement, and has good potency. Some say the condition seems to be holding steady and that it works well for whitening teeth.

"...The difference in my teeth has been incredible...." Read more

"Larg amount of tiny well made capsules in a medium size bottleThis is really work I felt good..." Read more

"...I have virtually NO tooth pain. This stuff is amazing, I take it daily and have been doing so now for about a year...." Read more

"Great high quality product that is easy to swallow, good flavor and is a great price." Read more

40 customers mention "Value for money"35 positive5 negative

Customers appreciate the value for money of the vitamins. They mention they're excellent products.

"...That sounds expensive but if you divide it out, it's a great price per gram compared to other vitamin K supplements, seeing as this one is 5 GRAMS,..." Read more

"great value. started taking vitamin k2 about 3 years ago...." Read more

"Good value if it’s really MK4. You never know with supplements...." Read more

"...high quality product that is easy to swallow, good flavor and is a great price." Read more

26 customers mention "Vitamin quality"26 positive0 negative

Customers like the quality of the vitamin. They mention it thickens the blood, is vital to good health, and an important product to strengthen bones. It keeps the calcium in your bones and out of your arteries, which prevents osteoporosis. Some say it's an awesome supplement for dental health and it skyrockets healing.

"An important product to strengthen bones." Read more

"...- but this stuff skyrocketed my healing...." Read more

"...malate with b6, as well as d3 and im seeing great results: my bones are doing great, my dental and gum health is fabulous, and though i am..." Read more

"...It keeps the calcium in your bones and out of your arteries, this prevents Osteoporosis and Atherosclerosis...." Read more

16 customers mention "Ease of swallow"16 positive0 negative

Customers find the vitamin easy to swallow. They mention the pills are small and easy to take.

"Great high quality product that is easy to swallow, good flavor and is a great price." Read more

"Easy to swallow no aftertaste and affordable Carlson is a good brand can’t go wrong." Read more

"Easy to swallow; effective." Read more

"Very easy to swallow." Read more

12 customers mention "Pain level"10 positive2 negative

Customers like the pain level of the vitamin. They mention it helps with sensitive teeth, doesn't make them sick, and makes their teeth feel smooth and clean.

"...I have virtually NO tooth pain. This stuff is amazing, I take it daily and have been doing so now for about a year...." Read more

"...these for about 3 weeks now, and I am amazed that my teeth feel so smooth and clean!!..." Read more

"...Sure enough, I felt lots better after switching. No more side effects. Now this is my K2." Read more

"...taking 1 per day (with higher doses of vitamin D), I have very little tooth pain left...." Read more

5 customers mention "Size"5 positive0 negative

Customers like the size of the vitamin capsules. They mention they're easy to swallow and the dose size is perfect.

"A very economical way of upping you K-2 intake. Pills are not over sized. Quality appears very high...." Read more

"Small and easy to swallow" Read more

"...The capsules are small and easy to take." Read more

"...Thanks so much for providing a great product! The dose size is perfect!" Read more

5 customers mention "Tartar control"5 positive0 negative

Customers are satisfied with the tartar control of the product. They mention it reduces tartar on their teeth and results in a far greater reduction of tooth decay than either vitamin alone.

"...been, and when I run my tongue along them, they are all smooth and clean...." Read more

"...Just had a new dental cleaning and they confirmed that my tartar problem is going down...." Read more

"...that vitamin K2 and vitamin D together result in a far greater reduction of tooth decay than does either vitamin alone...." Read more

"I was taking 5mg daily, and it reduced the tartar on my teeth. Then I started taking 10mg daily, and that seems to be what I need...." Read more

6 customers mention "Expiration date"4 positive2 negative

Customers have mixed opinions about the expiration date of the vitamin. Some mention it has a great expiration date, while others say it doesn't have an expiration date or lot number on it.

"...with my vender worked out well with fast shipping and a great expiration date." Read more

"...Mk4 also has a very short half life in the body so you need to take it throughout the day...." Read more

"...able to boost my vascular system, promote heart health and fight against premature aging. I think it has even helped my memory...." Read more

"...The Vitamin K-2 is good, 180 capsules give you plenty to last a long time. The subscribe and save makes it even a better value." Read more

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Top reviews from the United States

Domo
5.0 out of 5 stars My teeth have become strong
Reviewed in the United States on March 18, 2016
Flavor Name: UnflavoredSize: 60 Count (Pack of 1)Verified Purchase
I took this form of K2 (MK7, I copied and pasted from my review for an MK7) for about seven months last year, in an attempt to improve the condition of my teeth. I did a bit of research into vitamin K and after reading many reviews, I decided to try MK7 after using Life Extension Super K for 1-2 months and not seeing much difference. Since the reviews for MK7 and other MK7 versions were so good, I thought everything would be great and kept reordering MK7 without worry.
Seven months later, my teeth were horribly WORSE than before. I had developed a huge cavity in those few months that wasn't there before, my teeth were turning brown all along the inner edges, and one of my molars had a chunk of tooth just chip off on its own, on the side of the tooth. I hadn't really paid much attention to my teeth since I thought the MK7 would be taking care of them for me (dumb, yes I know). I never experienced that 'smoothness' on my teeth people always mentioned when taking vitamin K.
I freaked out and started researching in earnest, everything I could, and why/how people's teeth were improving on vitamin K. I read Weston A Price, the entire website. I knew food sources of vitamin K + cod liver oil were not enough to rescue my teeth, especially the one huge cavity that started to be painful (definitely a root canal waiting to happen), and then I came across one article on Marks Daily Apple that discussed one woman's experience in saving her teeth with vitamin K, specifically MK4, NOT MK7.
After reading that article I immediately ordered Carlson's MK4, which is 5mg per capsule, and started taking three a day, along with the Cure Your Tooth Decay book's emergency protocol of cod liver oil three times a day. The difference in my teeth has been incredible. The huge cavity I have has shrunk, and is now a light brown instead of black, doesn't cause me anymore pain, and all the brown along the inner edges of my teeth have faded away. My teeth are the brightest white they've ever been, and when I run my tongue along them, they are all smooth and clean. Before, when I would floss, the floss would rip and get caught on all kinds of jagged edges between my teeth but not anymore. It's been about 3 months on MK4 but the difference it has made in my teeth is really staggering.
One thing I noticed on the MK4 is that I didn't need to take any vitamin D supplements at all, the vitamin K seems to 'magnify' or multiply what little you get from the sun so I would get terrible headaches and pains when taking both D + K, which disappeared when I stopped the vitamin D. I still get some vit.D from the cod liver oil, and it seems to be enough. My theory is that too much vitamin D without a proper vitamin K to balance/utilize it can really screw you up, and I firmly believe MK7 is NOT the right vitamin K to be taking.
I also tried Thorne's MK4 drops, both sublingually and transdermally (a la Ray Peat), and it did not seem to be as effective as taking Carlson's orally, at least for me.

update June 2017
I am still taking this, but alternate between Carlson's and Thorne MK4 drops (taken orally). I have also added a high dose vitamin A (NOW foods 25,000 from fish oil) to balance out the vitamin D I am taking (5000iu every other day), financially I can't always buy the fermented CLO, which if taken 3 times a day is approx 30,000iu vitamin A (retinol forms not beta carotene). I learned that the headaches I would get were from an imbalance in the fat soluble vitamins (A, D, K) and perhaps occasional oxalate dumping - BUT I'm not an expert. I just am happy to have smooth teeth. I still strongly believe MK7 is not the correct form of vitamin K to take and believe my teeth really suffered during the time I took it. I've read articles that mention MK7 is much cheaper to produce than MK4 so manufacturers stand to gain much more profit from it. Also, Weston A Price noticed the 'X-factor' only when humans consumed animal by-products and not plant products, the former being sources of MK4 and the latter MK7. I don't doubt the health benefits of MK7 but I don't think it affects the bone/tooth structure the way MK4 does.
294 people found this helpful
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Mark
5.0 out of 5 stars good product, good price, and a heads up
Reviewed in the United States on June 10, 2013
Flavor Name: UnflavoredSize: 180 Count (Pack of 1)Verified Purchase
I purchased this product here and was happy with it. It seems MK-4 exists in certain mammalian tissues, with some organs having higher concentrations than others. Experiments with radio-labeled K-1 suggests that it can be converted into MK-4, but probably not at the therapeutic level individuals might seek.

The source in supplements seems to be entirely synthetic for MK-4(from a tobacco product I read), because sourcing animal products for it for extraction would be out of sight expensive. The highest food source seems to be "Fois Gras" and has 369 mcg in 100 grams, etc. Geese seem to consume the type of grass and consequently K-1 that their system can convert to Mk-4.

MK-9 seems exist in certain cheeses and has a very long half-life.
Mk-7 might have a three day half-life it is claimed.

MK-4 is said to be prescription in Japan for osteoporosis and typically given at 45 mg a day, in three 15 mg doses. Taking it with oil or fat containing meals seems to have a huge impact on absorption and consequentially utilization.

I ordered two shippings of "two month supplies" at the just mentioned dosage, from a different than Amazon vendor, after ordering and partially consuming this Carlson product.

I just discovered that Amazon now has vendors, including itself or Prime vendors, that carry the 15 mg/90 capsule bottles, which would be the Japanese monthly dosage for osteoporosis therapeutics. The source, brand, bottler, or whatever is called "Complementary Prescriptions" and can be located with a search on Amazon. The bulk manufacturer is probably based in China, though this isn't documented for the above product, there does seem to be MK-4 manufacturing sources in China, (...and since it isn't stated as being based elsewhere...).
edit: In Japan the supplier is "Eisai" who apparently has a patent from the Ministry of Japan. MK-4 is sold in Japan and across Asia under the brand name Glakay.
65 people found this helpful
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Michael Janko
5.0 out of 5 stars Bones
Reviewed in the United States on June 4, 2024
Flavor Name: UnflavoredSize: 60 Count (Pack of 1)Verified Purchase
An important product to strengthen bones.
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Ahmad Subhi
5.0 out of 5 stars Expensive
Reviewed in the United States on April 20, 2024
Flavor Name: UnflavoredSize: 180 Count (Pack of 1)Verified Purchase
Larg amount of tiny well made capsules in a medium size bottle
This is really work I felt good
Still the price is so high and few alternatives available will continue purchasing it
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Robert
4.0 out of 5 stars Robert
Reviewed in the United States on September 18, 2023
Flavor Name: UnflavoredSize: 180 Count (Pack of 1)Verified Purchase
As advertised
2 people found this helpful
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buffylowe
5.0 out of 5 stars Great product
Reviewed in the United States on May 14, 2024
Flavor Name: UnflavoredSize: 60 Count (Pack of 1)Verified Purchase
Just what the doctor ordered. Nothing better than this brand of K2 - MK4 for bone health.
One person found this helpful
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Mels
5.0 out of 5 stars Great value for the money
Reviewed in the United States on October 23, 2022
Flavor Name: UnflavoredSize: 180 Count (Pack of 1)Verified Purchase
I usually purchase this when it's around 50-⁶⁰$ for a 180 pill supply. That sounds expensive but if you divide it out, it's a great price per gram compared to other vitamin K supplements, seeing as this one is 5 GRAMS, not 5mg. Taking this seems to have helped me being my D levels into line. I have medically induced shortgut syndrome so I have to take megadoses of fat soluble vitamins to keep them in line, so I'm so thankful this one is available!
One person found this helpful
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A. Douglas
5.0 out of 5 stars K2 Vitamin with MK-4 should be taken with D3
Reviewed in the United States on May 24, 2024
Flavor Name: UnflavoredSize: 60 Count (Pack of 1)Verified Purchase
k2 with MK4 should be taken with D3 to be beneficial.
One person found this helpful
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Top reviews from other countries

Translate all reviews to English
秀一
5.0 out of 5 stars 速くて助かります
Reviewed in Japan on July 6, 2024
Flavor Name: UnflavoredSize: 60 Count (Pack of 1)Verified Purchase
支払いから4日で届いて助かります。
今回2回目の購入ですが、ビタミンK2（MK-4メナテトレノンの方）の使用を始めてから2か月で黒い虫歯の点が少し外側に押し出されて来ていました。（鏡で見ると少し移動してました）

多分歯の中心から再生してきてます。
ビタミンK2のMK-4とドラッグストアのマグネシウム（サプリ売り場の）とを併用してます。

完全に歯が治るかどうかはまだ未知数ですが、1年は様子を見ようと思います。

もっと状態の悪い歯の方も再生したら良いなとか考えてます。（今日もそっちの歯が少し欠けてしまいましたが）
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Kindleユーザー
5.0 out of 5 stars 商品は問題なく届きました
Reviewed in Japan on April 17, 2024
Flavor Name: UnflavoredSize: 60 Count (Pack of 1)Verified Purchase
特に問題も無く使用できています。
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ken8957
5.0 out of 5 stars 効果を実感
Reviewed in Japan on November 13, 2023
Flavor Name: UnflavoredSize: 60 Count (Pack of 1)Verified Purchase
以前購入したが使い切り、リピート購入した、使用して1週間後位に歯茎が凄くしまった感じ、年齢のせいなのか、歯茎に腫れができたりしていたが現在は全く無くなり、大変良いサプリと思う。
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ひろさん
4.0 out of 5 stars 虫歯に
Reviewed in Japan on September 1, 2024
Flavor Name: UnflavoredSize: 60 Count (Pack of 1)Verified Purchase
虫歯に良いかと思い購入しました。3ヶ月間、1日1錠続けていますが、効いているのかよくわからないです。当面継続予定です。
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Amazon カスタマー
3.0 out of 5 stars これは60カプセル
Reviewed in Japan on November 1, 2023
Flavor Name: UnflavoredSize: 60 Count (Pack of 1)Verified Purchase
よく見るとこれは60カプセルだった。
届いて、あれってなった。
60カプセルってなかなか日本では瓶型ケースに入っていないからちょっと驚きました。
空っぽかと思うぐらい全体が軽いです。
とにかく到着しました、ありがとうございます。
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