Introduction
Vitamin K is one of the unfamiliar forms of supplements for people.
Research on this relative newcomer nutrition scene identified in the 1920s is still limited. It was assumed, for years, that its principal benefit was its involvement in blood clotting – the “K” stands for “coagulation” in German.
However, as more studies say, it may be a significant factor in calcium deposit, strengthening of the bone, and many more. After knowing all the benefits, most people start including the best vitamin K2 supplements in USA in their diet.
Although the nutrient occurs in various forms, K2 is generally known as the most vital nutrient for supplementation. So, read the article and check out our list of the best vitamin K2 supplements in USA.
Our pick of the 8 best vitamin K2 supplements of 2024 in USA
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Let's take a deep dive into these 8 best Vitamin K2 Supplements in USA
Best Overall Vitamin K2 Supplements in USA
Bronson Labs
A+
Zotezo review
The Bronson Vitamin K2 MK-7 100 MCG tablets provide an affordable and convenient way to support bone health with each tablet containing 100 MCG of premium K2 as MK-7. While some users may not experience immediate results in reducing calcium deposits, the product is non-GMO and offers an easy-to-take solution for those seeking bone support.
Product details
Benefits of Bronson Vitamin K2 MK-7 Bone Sup...
Drawbacks
Sports Research
A+
Zotezo review
The Sports Research Vitamin K2 as MK-7 with Coconut MCT Oil offers a vegan-friendly, non-GMO, and gluten-free supplement that may help remove plaque from arteries, boost energy levels, and support joint health. While some users may find it pricey and may need to take a high daily dosage, its potential benefits for cardiovascular and joint health make it a valuable option.
Product details
Benefits of Sports Research Vitamin K2 MK-7 ...
Weaknesses
Innovix Pharma, Inc.
A+
Zotezo review
The InnovixLabs Full Spectrum Vitamin K2 MK-7 supplement offers a balanced ratio of MK-4 and MK-7 for bone, artery, and brain health support. It is a cost-effective option without soy or GMOs, making it a positive choice for general health and bone support, though some users may prefer a product with Vitamin K1.
Product details
Benefits of InnovixLabs Vitamin K2 MK-7 Caps...
Disadvantages
NOW Sports - Nutrition and Wellness
A+
Zotezo review
The NOW Supplements MK-7 Vitamin K-2 offers excellent cardiovascular and bone health support in easy-to-swallow vegan capsules with a good strength of 100 mcg per serving. While the trademarked MenaQ7 MK-7 is a great source, some users may prefer a product without a patented formulation, and more information on the sourcing and production process would be beneficial.
Product details
Benefits of NOW MK-7 Vitamin K-2 Capsules
Negatives
A
Zotezo review
The Nutricost Vitamin K2 (MK4) offers an affordable, good quality option for those seeking a gluten-free, non-GMO supplement. While it may not suit individuals needing a higher dosage and the packaging could be better for storage, the 240 capsules with 100mcg of Vitamin K2 per serving make it a convenient choice.
Product details
Benefits of Nutricost Vitamin K2 (MK4) ̵...
Cons
Nature Made
A
Zotezo review
Nature Made Vitamin K2 100 mcg offers an affordable and doctor-recommended solution for supporting healthy bones. While it works well with Vitamin D3, its limited supply size may necessitate purchasing multiple bottles for a daily dosage.
Product details
Benefits of Nature Made Vitamin K2 Softgels
Drawbacks
Deal supplement
B+
Zotezo review
The Vitamin K2 Supplement offers triple strength 600mcg softgels made with high-quality MK-7 and MK-4 forms, ensuring superior absorption rates. While beneficial for bone, joint, and immune support, potential tree nut contamination and concerns regarding fungus in nuts may be drawbacks for some users.
Product details
Benefits of Triple Strength K2 Supplement by...
Weaknesses
Jarrow Formulas
C+
Zotezo review
The Jarrow Formulas MK-7 90 mcg supplement offers optimal absorption of bioactive Vitamin K2-MK-7 to support bone and cardiovascular health. While effective, some users may find the pill size large and the smell strong.
Product details
Benefits of Jarrow MK-7 Vitamin K2 Softgels ...
Disadvantages
Tips for choosing the right vitamin K2 supplements for you
The factors to consider while buying the best vitamin k2 supplements in USA are:
Menaquinone compounds
Vitamin K2 comes in various forms, each with its characteristics. Even still, MK-7 and MK-4 are known as the most crucial. The MK-7 chemical promotes strong bones by increasing bone mineral density. MK-4 aids in the formation of collagen and carboxylation, a process that influences the quantity of calcium in your bones. When looking for vitamin K2 pills, look for ones that contain a variety of menaquinone compounds, though any supplement that contains MK-4 and MK-7 will suffice.
Concentration
Vitamin K2 supplements are available in the following amounts: 65 mcg, 100 mcg, and 120 mcg (MK7), as well as greater levels up to 1300 mcg (MK4). The recommended daily amount of vitamin K2 of type MK7 (120 mcg) is the most effective due to its ease of absorption and bioavailability. Look for the concentration of K2 per capsule.
Ingredient
If you have any dietary limitations, ensure your K2 vitamin supplement matches those requirements. Check the list of ingredients. Although maximum K2 supplements are vegan or vegetarian, some may contain animal byproducts. So, examine the ingredient list for its content. Ensure that you are not allergic to any one of them. Consider a supplement that has no GMO and is pure.
Taste and smell
K2 vitamin supplements may have an unpleasant taste or odor, which many people dislike. Although most K2 supplements are pleasant to drink, some are unusually bitter, making them difficult to take daily. It is a good idea to take a K2 vitamin supplement with a bearable flavor and scent.
Bottle
When purchasing the best vitamin K2 supplement in USA, it is critical to examine the product’s bottle. Vitamin K2 is light-sensitive, so the bottle should be dark or opaque to keep the capsules from being exposed to light.
Several capsules
Vitamin K2 is available in tablet form. The suggested daily dose is one capsule each day, either first thing in the morning or during one of your main meals. The number of capsules in each bottle varies from 60 to 90 to 100 units. Buy a bottle that has a maximum number of pills matching the price.
Certified
Make sure your supplement is third-party verified. Third-party supplements tested in a lab for purity. It ensures that they contain what they claim and do not contain high-risk, common contaminants. The best vitamin K2 supplements in USA come with ConsumerLabs, NSF, and USP third-party certifications.
Reviews
When you take a K2 vitamin supplement, you may have adverse effects, just as with any other supplement. It is best to choose a supplement that doesn’t have many side effects mentioned in reviews. A review also helps find out the taste, smell, and any problem related to the supplement.
Products listed here are carefully reviewed and tested by our expert authors and reviewers. If you buy through links on this page, we may earn a small commission. Here’s our editorial process.
How we reviewed these products
Benefits of using vitamin K2 supplements
Here are some major benefits of taking the best vitamin K2 supplements in USA.
Heart health
Vitamin K-2 may help reduce the risk of heart disease and enhance overall heart health. According to a study, K-2 activates a protein that inhibits calcium deposits from accumulating in blood vessel walls. The study also suggested a diet rich in natural vitamin K2 could reduce the incidence of coronary heart disease.
Improve dental health
Vitamin K2 strengthens teeth in the same way as it strengthens bones. This is because the vitamin aids calcium absorption by the teeth and activates dentin, which aids in the structure and health of the teeth.
Reduce inflammation
The possibilities of inflammation increase when the body has a low level of vitamin K and a high level of cytokines. Vitamin K2 lowers the body’s cytokine levels. Vitamin K2 supplementation is ideal for persons with inflammatory conditions such as Lupus, Crohn’s Disease, and diabetes.
Enhance exercise performance
During exercise, bones release osteocalcin, which appears to transmit messages to muscles to help them cope with increasing energy needs. Vitamin K2 protein permits skeletal muscle to utilize energy during exercise and increase workout efficiency and potential performance.
Bone health
Taking the best vitamin K2 supplements in USA promotes a healthy bone mineral density by carboxylate osteocalcin, a protein that binds calcium to bones.
In a study, 29 postmenopausal females with hip or vertebral compression fractures were given MK-4 supplements to see how they would react. The researchers found that consuming 5 milligrams of MK-4 daily lowered the level of undercarboxylated osteocalcin to levels “typical of healthy, premenopausal women.”
Anxiety and depression
High blood sugar levels can put a person at risk for depression, anxiety, and cognitive impairment. Effects of vitamin K-2 were studied with metabolic syndrome, high blood glucose levels, signs of anxiety, and depression. The treatment stabilized the blood glucose, reduced anxiety and depression symptoms after ten weeks.
Increase testosterone level
In the male testis, vitamin K2 MK-4 produces steroid hormones. In a study, a diet containing 75 mg/kg MK-4 increased testosterone level compared to a control diet.
Side-effects of using Vitamin K2 Supplements
Oral Vitamin K2 has rare side effects when taken at prescribed levels. Some of them are:
- Decreased appetite
- Muscle stiffness
- Decreased movement or activity
- Irritability
If you have any such symptoms, please consult your doctor or local pharma.
Recommended Dosage of Vitamin K2 Supplements
The recommended daily consumption of vitamin K from food and supplements are listed below. Maximum people consume adequate vitamin K2 through their foods.
| Group | Adequate Intak |
|---|---|
| Children 0-6 months | 2 micrograms/day |
| Children 7-12 months | 2.5 micrograms/day |
| Children 1-3 | 30 micrograms/day |
| Children 4-8 | 55 micrograms/day |
| Children 9-13 | 60 micrograms/day |
| Girls 14-18 | 75 micrograms/day |
| Women 19 and up | 90 micrograms/day |
| Women, pregnant or breastfeeding (19-50) | 90 micrograms/day |
| Women, pregnant or breastfeeding (under 19) | 75 micrograms/day |
| Boys 14-18 | 75 micrograms/day |
| Men 19 and up | 120 micrograms/day |
No negative effects have been observed with the quantities of vitamin K present in food and supplements. However, this does not rule out the possibility of harm from a large dose. A maximum safe dose has yet to be determined by researchers.
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Frequently asked questions on vitamin K2 supplements
1. Who can take vitamin K2?
2. Who cannot take K2 supplements?
3. What is the food that contains K2 vitamins?
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Conclusion
Vitamin K is a set of nutrients classified into K1 and K2 vitamins.
Vitamin K1 aids in blood clotting, while vitamin K2 promotes bone and heart function. More research on the roles of vitamin K subtypes is needed, however.
Some scientists believe that people at risk of heart disease should take vitamin K2 supplements daily. Others argue that we need further research before any definite suggestions.
Vitamin K, on the other hand, is essential for physiological function. Make sure you include enough vitamin K1 and K2 in your diet to keep your health in check.
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Mary Ahern, MS, RD is a registered dietitian and health writer who is passionate about plant-based nutrition and achieving better health by balancing time between the kitchen and the gym. Currently she's pursuing PhD from University of Arizona
