Vitamin D3 + K2 With Vitamin C Tablets | Cholecalciferol + Menaquinone-7 (MK-7)

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$15.99 - $39.99




Vitamin D3 + K2 With Vitamin C
60ct. or 365ct.
60 Servings or 365 Servings
Made from Fermented Soy Natto
As a dietary supplement, take one Vitamin D3 + K2 tablet daily.
Store in a cool and dry place. Keep away from direct sunlight and heat.
Keep out of reach of children. Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions, and/or taking prescription drugs or over the counter medications.
Always consult with a qualified health physician before taking any new dietary supplement. This product is not intended to diagnose, treat, cure, or prevent any diseases. These statements have not been evaluated by the Food and Drug Administration.

Frequently Bought Together:

Vitamin D3 + K2 With Vitamin C Tablets | Cholecalciferol + Menaquinone-7 (MK-7)
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Why Should I Take Vitamin D3 + K2

Vitamin D3 is an incredibly important vitamin that the majority of us do not get enough of, especially during the colder and darker winter months. This is due to the fact that the majority of vitamin D is synthesized by sunlight in our skin. When we do not experience a lot of sunlight exposure on our skin, this then also means that our vitamin D production plummets! This can cause a host of issues, the most notable of which is low mood. However, over the long term, not getting enough vitamin D can result in adverse effects on bone health, immune function, testosterone production, neurological function and muscle health.

When it comes to supplementing with vitamin D, there are a few routes that can be taken. One of those is to supplement with vitamin D2, however, this method presents with some drawbacks such as lower absorption and conversion to a potentially less potent form of active vitamin D. The other option is vitamin D3, this form appears to absorb better than vitamin D2, and readily converts to the main active form of vitamin D which is 1,25-(OH)2 vitamin D3 (calcitriol). With all this in mind, our vitamin D product contains vitamin D3. Additionally, the vitamin D3 we use has been microencapsulated. This leads to slightly better absorption and makes it more effective when taken without food. We also add in a solid dose of vitamin K2 (as MK-7), to further help enhance the beneficial effects of vitamin D3 as there is a lot of synergy between vitamin D and vitamin K2! In order to keep everything nice and stable, we even added in a dose of vitamin C in order to prevent oxidation of the vitamin D3 and K2.

What is Vitamin D3?

Vitamin D3 is an essential vitamin that plays a role in a number of important bodily functions, most notably bone health and immune function. Synthesis of Vitamin D3 occurs in the skin through UVB radiation. Vitamin D3 also occurs in dietary sources such as fish and milk that has been enriched with Vitamin D (often the inferior vitamin D2 though). However between sun exposure and our diet, this is oftentimes not enough, and Vitamin D deficiencies are quite common. In fact, research has shown that the previously recommended daily intake of Vitamin D foods is insufficient for most people. This led to the rise of people taking a Vitamin D supplement for Vitamin D benefits over the years. Many people are already familiar with the various health benefits of Vitamin D which include bone health, mood, immune and cognitive function enhancement, with additional benefits to metabolic and cardiovascular function.

How Many Vitamin D IU's?

Most Vitamin D supplements list the dosage in international units (IU), so you may have wondered, what is the vitamin D IU dosage in our Vitamin D3 + K2? The simple answer to this is 5000 IU, but let’s talk about IU’s some more! You may have noticed that we do not list a Vitamin D IU dosage, and this is because the IU system is outdated and the industry is currently moving away from it. In fact, current FDA guidance is moving away from IU dosages for vitamins like D, A and E, and are instead advising for listing dosages in micrograms or milligrams. Measuring vitamin D dosages in micrograms instead of vitamin D IU allows for more transparency and accuracy in vitamin D dosing.

So what exactly is an ‘IU’ and why is the supplement industry moving away from it? International Units were designed to be used to quantify biological effects based on a weight dependent dosage. The need for International Units exists because vitamins like D, A and E can exist in different forms that have varying levels of biological effects. IU accounts for these different levels of biological effects between the various forms of the vitamin, such that a certain weight-based dosage of specific forms of the vitamin can be dosed at different levels to produce the desired biological effects. For example, let’s take a look at Vitamin A, 1 IU of Vitamin A is the equivalent of:

  1. 0.3 mcg retinol

  2. 0.6 mcg beta-carotene

In this case, IU allows us to dose Vitamin A in different forms while ensuring the desired biological effects. That being said, the actual IU number is arbitrarily set and this is where things start to get a little confusing. For example, 1 IU of vitamin A is not the same as 1 IU of vitamin D. Worse yet, for Vitamin D there is no distinction between the two main forms, D2 and D3, which is why we went with a Vitamin A example above, instead of a specific example for vitamin D. This means that there is no reason to use vitamin D IU doses. Instead, using micrograms coupled with daily value percentages makes a lot more sense for vitamin D. For the other vitamins, like A and E, other systems have been devised that differentiate between the different forms but instead lists microgram doses specified for each different form.

What is Vitamin K?

Vitamin K is an essential vitamin and is typically supplemented for its cardiovascular benefits. The two primary forms of Vitamin K are phylloquinones (Vitamin K1) and menaquinones (Vitamin K2). Vitamin K comes in a few different forms that are sometimes referred to as vitamers, and there are several different vitamers within Vitamin K2 that are abbreviated as MK-x. Vitamin K2 MK-7 is one of the more common types of Vitamin K and is the variant most popularly supplemented for Vitamin K benefits. But what is Vitamin K good for? Although Vitamin K benefits to cardiovascular, metabolic, and bone function have been studied for years, Vitamin K wields a fascinating range of Vitamin K benefits that continue to be researched today. 

Recent studies have revealed that a Vitamin K2 supplement may help promote cognitive processes as well. Research conducted over the last decade has shown that cognitive function and Vitamin K supplement consumption appear to be directly correlated. One of the unexpected findings from this research was the relationship between Vitamin K and the myelin sheaths of neurons. Animal studies found that a Vitamin K supplement may help promote myelin sheath function and thus support a critical foundation needed for overall cognitive function. Subsequent studies observed a positive correlation between cognitive-based performance tasks and Vitamin K supplementation.

Vitamin K2 Source: Made from Fermented Soy Natto.

What is Vitamin C?

Vitamin C is also known as ascorbic acid and is an essential vitamin that is commonly found in fruits and vegetables. Even though many foods contain Vitamin C, Vitamin C supplements are some of the most commonly used supplements today. We used Vitamin C in this formulation to improve the stability of Vitamin D3 + K2. Vitamin D3 and K2 by themselves are prone to oxidation, adding Vitamin C shields them from this kind of degradation.

Vitamin D3 + K2 Benefits and Uses

  • Support immune function*
  • Promotes bone health*
  • Promotes mood*

Why Should I Take Vitamin D3 & K2 Together?

It’s well known that most Vitamin D3 and Vitamin K2 supplements are typically formulated together, but why specifically formulate Vitamin K and Vitamin D together? Vitamin K and Vitamin D have a very synergistic relationship with each other and they each help potentiate the other’s benefits! Some of the most notable benefits of these two in combination are their support of cardiovascular and bone function.* Research has also shown that these two exhibit cognitive benefits on their own but can be better utilized when supplemented in combination!

Microencapsulated Vitamin D3 & K2

In an effort to further increase the efficacy of our vitamin D3 and K2 supplement, we have also chosen high end microencapsulated versions of these vitamins. This microencapsulation process allows us to further dial in the absorption of both vitamin D3 and K2! This especially comes in handy for those of us who fast during the day, but would rather take their D3 and K2 product earlier in the day.

The reason for taking vitamin D3 and K2 with a fat containing meal, is that they absorb better due to dietary fats that react with bile acids to create micelles which microencapsulate the vitamin D3 and K2, helping it to absorb. Instead of relying on dietary fat for this process, we can also create the microencapsulation effect outside of the body, which may obfuscate the need for dietary fat consumption alongside our vitamin D3 and K2 product! This makes it ideal for individuals participating in intermittent fasting! That being said, these microencapsulated forms of vitamin D3 and K2 will also help absorption even further when taken with a fat containing meal.

Vitamin D3 + Vitamin K2 Stacks

Check out our recommended Vitamin D3 + Vitamin K2 stacks that help further amplify Vitamin D3 + Vitamin K2 benefits!

Cognitive Function Stack: Vitamin D3 Vitamin K2 with Magtein

This combination is a unique and well-rounded stack for supporting overall cognitive faculties with additional support to cellular function!*

Immune Function Stack: Vitamin D3 + Vitamin K2 with Immune Defense

Add Vitamin D3 + Vitamin K2 to our comprehensive Immune Defense formula for added support to immune system function!*

Cardiovascular Support Stack: Vitamin D3 + Vitamin K2 with Hesperidin

Vitamin D3 + Vitamin K2 paired with Hesperidin is a two-pronged approach to supporting overall cardiovascular function with additional benefits to metabolic function. *

Vitamin K2 and Vitamin D3 Dosage

As a dietary supplement, take one Vitamin D3 + K2 tablet daily. 

Vitamin D3 and Vitamin K2 Reviews

To gain more insight, see the Vitamin D3 + Vitamin K2 reviews and experiences below.

Where to Buy Vitamin D3 + Vitamin K2 Tablets

Nootropics Depot offers 60ct. and 365ct. jars of high quality Vitamin D3 + Vitamin K2 tablets. Nootropics Depot’s Vitamin D3 + Vitamin K2 tablets have been lab tested and verified for both product purity and identity.

 *Attention: This product is not intended to diagnose, treat, cure, or prevent any disease. It has not been approved, nor have these statements been evaluated by the FDA.

17 Reviews

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  • 1
    Pill form

    This pill form of D3+K2 causes heartburn for me. Even tho I use Nexium for acid reflux an hour before I eat. Going back to an oil based capsule.

  • 1
    Side effects

    Caused frequent heart palpitations, that seems to be an issue with the MK-7 version, palpitations stopped soon after I stopped taking it

17 Reviews

  • 1
    Pill form

    This pill form of D3+K2 causes heartburn for me. Even tho I use Nexium for acid reflux an hour before I eat. Going back to an oil based capsule.

  • 1
    Side effects

    Caused frequent heart palpitations, that seems to be an issue with the MK-7 version, palpitations stopped soon after I stopped taking it

  • 2
    Negative reaction to MK-7 form of vitamin K

    I was taking d3 with the mk-4 form of vitamin k for years with no issues. I recently tried this version with mk-7 and was getting insomnia, heart palpitations and anxiety. I had no idea what was causing the sudden issues, but after researching online saw some people have a negative reaction to the mk-7 version of vitamin k, perhaps due to its long half life. Stopped taking it and issues have resolved. Just a heads up. ND Admin: We are going to be releasing an MK-4 version for people like you soon.

  • 4
    Good product, but I believe the Vitamin C is giving me insomnia

    This is a good product which my entire family uses every day. However I have a strange side effect in which this gives me insomnia. I do take this first thing in the morning, so I am almost certain it's not the Vitamin D, but the Vitamin C as I had a similar reaction from taking Vitamin C supplements in the past.

  • 5
    Worked great for me

    My D levels came back at around 20, and after about 6 months of taking 2 per day my D levels are now around 70. What more is there to say, this works great. I no longer fear getting sick which has lowered my stress greatly during our current global situation.

  • 5
    Great for mental energy

    Take 4 a day, and it changes my life, no brain fog anymore, I am able to think again that’s great. Good energy during the day and better sleep. Oura ring detected a way lower heart rate and higher HRV along with the improved sleep. Very very nice

  • 5
    D3 + K2

    This is a great supplement, for a great price!

  • 5
    Great price

    Great quality as usual, and at a great price as well!

  • 5

    Buy the 365 count. Great quality.

  • 5
    So far so good.

    I appreciate the quality and cost effective price that ND offers with VitD/K2 supplement. I’ve been taking daily and although I haven’t noticed any difference yet, I do still appreciate the value/quality provided. I do have a heart rate variability tracking device, and unfortunately I have to notice any significant change detected through my device either. Hence why the 4 stars, will continue to take otherwise.

  • 2
    Not effective

    I only take these for the vitamin K in them now. These don’t seem to be as bioavailable as soft gel forms of vitamin D. I’ve been taking 10k IU a day of these to help with the lack on sunlight this winter and give me a boost in energy, but have noticed no difference using this supplement. Once switching back to 10k IU from a previous soft gel form I noticed a huge difference. I have had great experiences with all other ND products but this one didn’t get the job done for me personally.

  • 5
    Perfect Combination

    This cuts 3 pills a day into 1. The perfect ratio and exactly what I was looking for.

  • 5

    I have a chronically low Vit D level that I tried to supplement for, but for some reason any brand I tried made me anxious, on-edge, and irritable. I originally purchased ND’s Vit D for my daughter but thought I’d also give it a shot since it's a ND product. I have had NONE of the issues that I had in the past. My mood doesn’t take any hit at all. I don’t understand why, but I’m certainly happy about it and will be placing another order.

  • 5
    A staple from a trustworthy company

    I'm glad ND's selling 5k D3 with K2. I take it daily, and now I can rest assured that I'm getting the right amounts!

  • 5
    Don’t remove from site

    This stuff is very good

  • 5

    K2, especially mk-7, is underappreciated. Welcome affordable supplement from a trusted source.

  • 5
    Holy cow

    I cannot believe how good this supplement is. I mean just wow! I've taken a big old box load of different nootropics and supplements from you guys and this has got to be a top one for me. You would think because it's not a fancy nootropic that it wouldn't do much for you, but it is really mentally stimulating! It just feels like my mind and energy woke the fuck up. I've had vitamin D supplements before too and they always work pretty well but this just gives you so much dang energy! Everyone should try this.