Connor Sellers
Published by Connor Sellers
Fact checked by Donald Christman, BHSc FACT CHECKED

I’ve been taking vitamin D supplements for many years, especially in the winter months, when I rarely get to see real sunlight.

But it’s only in the last 12 months that I have become increasingly aware of vitamin K.

Particularly K2.

I was working with a client who had bone density problems, and a healthcare provider and dietitian had recommended him to take a combo of K2 and D3.

As you’ll learn on this page, these vitamins have been scientifically shown to help with heart and bone health. But unfortunately, there are many supplements available that don’t provide the right forms.

So, we set out and tested over 30 products to come up with the following list to find the best vitamin D3 and K2 supplement.

Our Top Vitamin D3 And K2 Supplements

1 - LiveWell K2+D3 (Editor's Choice)

LiveWell K2+D3

Our top supplement choice comes from LiveWell. It may provide the right amounts with 5,000 IU per day of vitamin D3 and the recommended dosage of 100 mcg of vitamin K2 per serving per day.

Importantly, it’s also the vitamin K2 MK-7 type, which research has shown to be best suited to achieve healthy bones and improved heart health. [1].

  • 100mcg K2
  • 125mcg D3
Pros
  • Uses the MK-7 form of K2, which should work better for calcium absorption
  • Claims to have some added MCT oil for brain energy
  • Softgel capsules seem to be easy to swallow
  • Free from dairy, soy, and gluten
Cons
  • The bulk discounts could be a bit better

The only thing we’d like to see an improvement for is the available discounts on bulk orders.

2 - Nuzena Solar Essence Vitamin D3 K2

Nuzena Solar Essence Vitamin D3 K2

Nuzena is another company that has created a good quality vitamin supplement that may provide just enough vitamin K2 and D3 per day.

What we liked is the added black pepper extract, which may help to speed up the absorption process.

  • 100mcg K2
  • 5000 IU of vitamin D3
Pros
  • The stronger D3 dose should work well for immune function
  • Contains added calcium for bone health
  • Claims to be faster to absorb due to added black pepper extract
Cons
  • It’s a bit more expensive unless you choose a bulk order

I would just recommend taking advantage of the bulk discounts to make it more affordable.

3 - Sports Research Vitamin K2 + D3 with Organic Coconut Oil

Sports Research Vitamin K2 + D3 with Organic Coconut Oil

This one might be a good choice for any vegans who need a boost in their vitamin D levels, as it’s sourced from lichen.

The company also has the supplement tested for quality and purity.

  • 100mcg K2
  • 125mcg D3
Pros
  • Uses lichen-sourced D3 making it suitable for vegans
  • Positive comments about it working well for your immune system
  • Third-party tested for purity and quality
Cons
  • Some rare reports about stomach upset

We just noted a few comments that it might cause some stomach cramps.

4 - Micro Ingredients Vitamin K2 + D3 Softgel

Micro Ingredients Vitamin D3 + K2 Softgel

Here is another vitamin D3 supplement with added K2 that claims to be one of the best to prevent heart disease.

There are also positive comments about bone mineral density improvements which is advantageous on your overall bone health.

  • 100mcg K2
  • 125mcg D3
Pros
  • A good dose of the sunshine vitamin for an immunity boost
  • Claims to help support tooth enamel and heart health
  • It may be a great bulk-order option to save money
Cons
  • I’m not a big fan of the pouch for storage

While it’s a good bulk order option, we don’t think the pouch is the best way to store the capsules.

5 - Bronson Vitamin D3 Plus K2

Bronson has been a favorite for vitamin K supplementation, and we were delighted to see they have added D3.

It’s not as strong as some others, but it may still work well to improve bone density.

  • 90 mcg K2
  • 125mcg D3
Pros
  • Claims to be recommended by doctors for elderly people
  • Free from the most common allergens
  • Capsules seem to be small enough for easy swallowing
Cons
  • Some people have reported headaches after taking it

One thing we did see in a few reviews is that some people reported getting headaches.

6 - NOW Foods Vitamin D-3 & K-2

NOW Foods Vitamin D-3 & K-2

This might be one of the better dietary supplements if you need to take a smaller dose per day. It’s sometimes recommended by doctors for cardiovascular disease and prostate cancer.

  • 45 mcg K2
  • 25mcg D3
Pros
  • A lower dose may make it more suitable for people with sensitive stomachs
  • Positive reports that it may help to deal with heart disease
  • Non-GMO and gluten-free for added peace of mind
Cons
  • The capsules might be a bit large for some users

Just keep in mind that the capsules may be a bit larger to swallow.

7 - SBR Nutrition Vitamin K2 + D3

SBR Nutrition Vitamin D3 + K2

This liquid vitamin might be suitable for anyone that has had a specific dose of K2 and D3 recommended by a healthcare provider.

  • 25mcg K2
  • 1400 IU of D3
Pros
  • Comes as a liquid vitamin that may be faster to absorb
  • Should be easy to mix in with food
  • Users like that you might take a precise amount recommended by a healthcare provider
Cons
  • It might be a bit too weak for many people

Just keep in mind that the dose per drop is quite low when comparing prices.

8 - Zhou Nutrition D3 And K2

Zhou Nutrition D3 And K2

Zhou claims to have created a product that may deal with health conditions as well as improved mood and mental wellbeing.

We also liked that the capsules are small and don’t tend to get stuck in your throat.

  • 90 mcg K2
  • 125mcg D3
Pros
  • Positive online reviews about improved mood and immunity
  • Tested for the most common allergens
  • Capsules are small and easy to swallow
Cons
  • Some users have reported feeling constipated

The only downside we noted was that some users had reported some constipation.

9 - Solaray Vitamin K2 + D3

Solaray Vitamin D3 + K2

This one comes from a company that has been making vitamin D supplements for a long time, and it’s great to see a mix with K2.

It also contains some calcium to kick start some increases in bone density.

  • 50 mcg K2
  • 125mcg D3
Pros
  • Third-party tested for quality and purity
  • Contains some added calcium to help strengthen bones
  • Seems to be easy to swallow
Cons
  • It could be a bit stronger on the vitamin K2 side

The one thing I would point out is that it’s a bit weak when it comes to vitamin K2.

10 - Quicksilver Scientific Nanoemulsified D3K2

Quicksilver Scientific Nanoemulsified D3K2

The final product we’d like to recommend is another liquid one, but it comes with a pump dispenser.

This may make it easier to adjust your dose to a precise volume, as suggested by a healthcare provider.

  • 90 mcg K2
  • 60mcg D3
Pros
  • The liquid product comes with a simple pump mechanism
  • Should work well for measuring precise amounts
  • Suitable for people who may not like swallowing tablets
Cons
  • It’s quite expensive for the dosage you get

We would agree, though, that it seems a bit pricey for the dose of D3 per day offered.

Buyer’s Guide

credit card and laptop

When you’re comparing different vitamin supplements, it’s important to look at these three key areas.

1 - Type Of Vitamin D

Many health professionals these days suggest that vitamin D might be more important than C.

I’m not here to argue either way.

It’s probably best if you get plenty of both.

“The recommended form of vitamin D is vitamin D3 or cholecalciferol. This is the natural form of vitamin D that your body makes from sunlight.”

 

- WebMD.com

But there ‘s one important factor to consider, and that’s the specific type of this vitamin. Your body naturally produces it in the skin when exposed to UVB rays, and scientists suggest that if you don’t see enough daylight that you aim for the D3 version [2].

2 - Type Of Vitamin K2

Vitamin K2

Now, when it comes to K2, it becomes a little bit more confusing.

But bear with me.

Scientists have identified two different types of K2 which you’ll generally find marked as MK4 and MK7.

The important thing to look out for is a supplement that contains the MK7 type, as studies have shown this to be significantly more effective [3].

Other studies have also revealed that large parts of the population may be deficient in vitamin K2.

Why is this?

Apparently, we don’t eat enough fermented foods, which are the main natural source of K2.

More on this shortly.

3 - Compare The Dosage

You’ll notice quite different prices in the above list, which is why we always suggest that you compare the dosage as well.

Unless you have a specific health issue where a healthcare provider has recommended that you improve your levels of vitamin intake by a specific amount, then there are some general guidelines you can use.

A safe amount of each would be 100mcg of K2 and 125mcg of D3 [4].

You’ll probably notice that most of the above supplements have that ideal dosage per day.

Be careful not to take too high doses than required because too much will not be good for your body too.

Natural Food Sources

While I’m a big fan of taking supplements to make sure you boost your micronutrient intake, it’s still a good idea to be aware of certain ways that your diet might support specific vitamin intake.

Here are some ideas you should consider.

Boosting K2 Intake

K2 is only available in animal products and fermented foods, and that’s why it has become a bit more common that people don’t get the optimum levels.

“Also, because it is fat-soluble, organ meats and high-fat dairy products contain fairly substantial quantities of vitamin K-2. Conversely, lean meats, such as poultry, are not good sources of K-2.”

 

- Katherine Marengo, Registered Dietitian

With research suggesting that it could be a significant way to improve heart health, here are some possible ways to get a boost.

  1. Cooked Kale
  2. Cooked Collard Greens
  3. Raw Swiss Chard
  4. Natto
  5. Raw Spinach

 

  1. Broccoli
  2. Beef Liver
  3. Pork Chops
  4. Green Beans
  5. Kiwis

Boosting D3 Intake

First, let me say that the best way to deal with vitamin D deficiency is to get out in the sun more. Your skin naturally produces D3, and about 20 minutes without sunscreen should still be a safe solution.

But there are some ways that you might be able to adapt your diet to get a bit of a boost.

Just keep in mind that there are very few foods that contain D3, and in most cases, they contain only a small volume.

That’s why a good quality supplement is often the recommended solution by doctors and dietitians.

Try adding some of these on a more regular basis:

  1. Beef liver
  2. Cheese
  3. Egg yolks
  4. Fatty fish (herring or sardines)

The other thing you’ll notice with these suggestions is that there aren’t any options for vegans.

If you are a vegan, check out our buyer's guide on the best vegan-friendly multivitamins.

And this may be a problem if you’re deficient in D3.

Fortunately, there are fortified foods and drinks available, which may be a good option to consider. You’ll often see this on bottles of orange juice or boxes of cereals where it might say that D3 and possibly calcium have been added.

You can always take dedicated vitamin D supplements, if you need to bump up your intake fast.

Related Articles:

  1. Multivitamins for Men
  2. Multivitamins for Bodybuilding
  3. Multivitamins for Teenagers

Expected Health Benefits

Vitamin K2

Scientists have been studying K2 for many years, but it seems like vitamin K2 deficiency is only starting to be understood.

And here’s how it might help you.

Your body needs more D3 and calcium as you age because it becomes more difficult to maintain strong bones.

What K2 apparently does is help your body get the calcium to where it is needed, which is the bones.

And at the same time, it may help prevent calcium building up in arteries, which research has shown might be one of the best boosts your cardiovascular system can get.

The result could be lower blood pressure and fewer risks of developing blocked arteries [5].

Vitamin D3

bone tissues

People who become deficient in vitamin D3 may quickly experience quite significant issues with bone density.

Your body is perfectly able to produce enough D3 by being exposed to sunshine for about 10 minutes in a swimsuit.

But that’s not something most people get.

Many are concerned about direct sun exposure without sunscreen. And the winter months don’t make it easy either.

That may be the reason why so many people could be deficient [6].

Doctors believe that by boosting your D3 intake, your body may process more calcium to build up bone tissue.

The way you need to look at these two vitamins is that D3 may help to process more calcium, while K2 should help to prevent that calcium from becoming dangerous to your heart.

FAQs

Should You Take Vitamin D3 With K2?

Yes, you should take vitamin D3 with K2, as the two are believed to work together for an overall health boost. D3 helps your body better absorb calcium it needs. But because that calcium could cause heart blockages, you may want to consider taking K2, which science has shown to prevent such blockages.

What Is the Best Form of Vitamin D to Take?

The best form of vitamin D to take is D3. It’s the form that is most closely related to the same vitamin the human body creates. And with natural sources being quite limited, it’s often best to take D3 supplements

Does Vitamin K2 Help Clear Arteries?

No, Vitamin K2 doesn’t help clear arteries. Research on human test patients has shown that it may prevent blocked arteries, but it hasn’t been proven to help reverse the damage that has already been done.

Can Too Much Vitamin K2 Be Harmful?

Yes, too much vitamin K2 can be harmful, but it’s mainly associated with people who suffer from liver or kidney diseases. In these cases, patients should discuss taking vitamin K supplements with their doctor to ensure they avoid side effects.

What Is the Difference Between Vitamin K2 and Vitamin K1?

The difference between vitamin K2 and vitamin K1 comes down to K2 preventing heart disease and K1 playing a role in blood coagulation. They are also found in very different types of foods, so you may not get both through one source.

Who Is at Risk of D3 and K2 Deficiency?

It’s mainly people who don’t get enough sun exposure and don’t eat fermented foods that are at risk of a D3 and K2 deficiency. The easiest way to solve this is through supplements, as some of the foods may not be suitable for all diets.

Our #1 Vitamin D3 and K2 Supplement

After discussing our blood test results with a dietitian, we found that the best results seem to be achieved with the LiveWell K2 D3 supplement above.

If you’re struggling to get enough sunshine or adding fermented foods doesn’t suit your diet, then a supplement like LiveWell should be your first choice.

It’s got the right type of K2 vitamins, and the dose per day also seems to match medical recommendations.

Order yours today, and let us know how well they worked for you.

LiveWell K2+D3

LiveWell K2+D3

Our #1 Recommendation

  • Uses the MK-7 form of K2, which should work better for calcium absorption
  • Claims to have some added MCT oil for brain energy
  • Softgel capsules seem to be easy to swallow
  • Free from dairy, soy, and gluten
  • Get the BEST PRICE until the end of October
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