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    • Picture of Person, Human, Medication with text SUPPORT HEALTHY CALCIUM ABSORPTION CLINICAL EFFECTS 6...
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#1 top seller
    • Main bottle
    • Back bottle
    • Supplement facts
    • Product advantages
    • Picture of Person, Human, Medication with text SUPPORT HEALTHY CALCIUM ABSORPTION CLINICAL EFFECTS 6...
    • Exercise
    • Elderly couple beach
    • Elderly couple playing
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Clinical Effects K2 + D3 is a health and immune system supporting complex of vitamins K2 and D3 with Calcium Carbonate and pure BioPerine® for long-term health benefits.

Take K2 + D3 twice daily to (1) Promote bone health, (2) Support your immune system, (3) Support cardiovascular health, (4) Improve energy levels, (5) Positive mood support, and (6) Encourage long-term health and vitality.

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Vitamin K2 + D3

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Promotes Bone Health

Give your bones the calcium they need along with the tools they need to absorb it.

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Immune Health Support

Support healthy immune system function.

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Support Heart Health

Support your heart and cardiovascular system with K2 + D3!

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Long-Lasting Energy

Vitamin D3 is known to play a key role in healthy energy levels.

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Mood Support

Healthy vitamin D levels for positive mood support.

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Support Health & Wellness

Support your all-around health across multiple vital systems in the body.

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Science-Backed Formula

K2 + D3 features science-backed ingredients to safely support your health.

Protect your health with high quality ingredients. 

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WHY k2 + d3

Doctors recommend Vitamin D3 because it supports strong bones, supports the immune system, and supports a variety of basic health functions. Interestingly, the way it supports bones is by aiding Calcium absorption and helping to calcify hard tissues.

But here’s the problem: while the body’s hard tissues need plenty of Calcium, it can be dangerous in other areas. (For example, when Calcium saturates in arteries, it can lead to health issues.)

Thankfully, when taken with Vitamin D3, Vitamin K2 helps protect soft tissues and so Calcium goes where it’s needed. Clinical Effects K2 + D3 combines the highest-quality Vitamins K2 and D3 along with Calcium and BioPerine® for enhanced bioavailability.


Over 40% of adults are deficient in Vitamin D which can leave the immune system more vulnerable.


Since dietary sources of Calcium can contain only trace amounts of this key mineral in maintaining a strong, healthy body, supplementation is important.


Vitamin K2 promotes heart and brain health, supports a healthy inflammation response, and helps protect soft tissues from calcification.


K2 + D3 features BioPerine® from peppercorn that has been standardized to 95% Piperine for optimal nutrient metabolism within the body.

Why Customers Love Our Vitamin K2 + D3 Complex

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    Author Amy

    So Super easy for your stomach if you have sensitive stomach issues like me.

    Amy Boatwright

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    Author Becky

    So my doctor specifically recommended the D3 and the K2 together because it's beneficial for bone and cardiovascular health.

    Becky Carmen

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    Author Traci

    I have introduced Clinical Effects to my life and they have K2 and it's supposed to really help with bone health.

    Traci Shannon


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Ashley Ingram

I have tried a lot of solutions for my stress. The Vitamin D3 with K2 were my last resort and they have worked well.

It took a little while but now I have 3x more energy than I used to. It has helped tremedously in my professional life.

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Tami Moore

I have noticed a huge difference after I started taking your Vitamin D with K2. The K2 was key here.

At last report my D levels were above 60. I am super happy with your customer support team who answered my questions with patience. Kudos!

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Melvin Phillips

These are definitely good quality as my reading came back last week with a higher Vitamin D count. My doc had me tested for low D and found I was lacking considerably.

I bought one with K2 because of a lot of research that has come out lately supporting the combination.

In short, I am happy to buy again from you guys!

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Nina Joseph

This is my third order. It was late by 2 days (thought you guys should know this).

My neuro friend recommended your brand about 4 months ago because of the BioPerene in your ingredient list. He said it helps with better absorption of the vitamins.

I am not low on Vitamin D. I take these for stress issues, plus the immunity benefits that come with it. So far I am happy with your product and plan to continue for the foreseeable future.

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Craig Austin

At 65 I am challenged with low energy and a lot of pain in my joints.

I am so glad I found your product. In the last 2 months I can't tell you what a difference these vitamin pills have made.

I am able to spend more time with my grandkids, which is a huge blessing. God Bless!

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Tawny H.

Love the reminder emails! It is easy to reorder and the products are clean, safe and effective! Just what I was looking for!!

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Marrianne N.

Improved my energy levels

I just started using the Vitamin D supplement for the past 3 days. I had surgery a month ago and my Vitamin D level had still not recovered.

I was told to take Vitamin D supplement with K2. (K2 is supposed to protect soft tissue from calcification)

I haven't noticed any dramatic effect, but my energy levels seemed to have improved some already. I think in the long term, my immune system will be stronger and many other thing will improve after a month or so.

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Johnathan W.

Just what I was looking for

I was told to start taking vitamin D and that it needs to be combined with K and calcium. This product has everything I was looking for at a decent price.

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Bobby M.

My Vitamin D levels are up

My doctor told me I was low on vitamin D. I’d been taking these for a while and had my levels rechecked and they are up. Looks like these are doing the job.

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Jay T.

Good source of vitamin D.

I don’t get a lot of sunlight between where I live and working an office job. I seemed to be getting more fatigued and felt stiff. After taking these for a couple months I feel more energy and am less achy.

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Frequently Asked Questions

    • How Do I Use K2+D3?
      As a dietary supplement take one (1) veggie capsule twice a day. For best results take 20-30 min before a meal with an 8 oz. glass of water or as directed by your Healthcare Professional. Caution: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement.
    • What is K2 + D3?
      K2 + D3 is a dietary supplement formulated to promote a variety of health benefits including immune system support, stronger bones, as well as heart and brain health. Specifically, it supports the health-promoting benefits of Vitamin D are utilized while helping to protect the body's soft tissues from the dangerous impacts related to Calcium saturation.
    • Why is K2 + D3 better than just D3?
      Most diets only contain trace amounts of the critical mineral Calcium. One of the ways that Vitamin D works is by helping your body's absorption of Calcium to keep it at high enough levels throughout the body. This is great for strong tissues like bones and teeth, but it can be detrimental to soft tissues like arteries where the hardening effects of calcification can lead to other medical issues. Nevertheless, Vitamin D plays a key role in numerous aspects of basic health and is therefore one of the most important vitamins recommended by doctors for daily supplementation. A deficiency in Vitamin D causes serious problems, but having too much Calcium in soft tissues also comes with risks. For this reason, Vitamin K2 is taken in combination with Vitamin D3 to ensure that Calcium reinforces your body's hard tissues while at the same time protecting your soft tissues from calcification.
    • How do I know if I’m deficient in Vitamin D?
      Upwards of 40% of adults are deficient in Vitamin D which poses a range of health risks including obesity, a weakened immune system, bone and tooth deterioration, and other issues like high blood pressure. If you are concerned about a possible deficiency, speak with your doctor about getting blood work done to determine the levels of important vitamins, minerals and nutrients in your body.
    • How does K2 + D3 work?
      K2 + D3 works by combining the power of Calcium, Vitamin D3 and Vitamin K2 to deliver wide-ranging health benefits available through dietary supplementation without the typical risks associated with calcification of soft tissues. Vitamin D is a vitamin that plays an important role in your health but must be modulated by Vitamin K2’s protection of soft tissues. K2 + D3 can support long-term health and vitality.
    • Does K2 + D3 cause any side effects?
      Most people do not experience side effects when using K2 + D3. If you have any questions, feel free to contact customer support. If you are concerned about possible contraindications with prescription medications or you have any serious medical conditions, speak with your physician before trying K2 + D3 or any dietary supplement.
    • I have a well-rounded diet. Do I still need K2 + D3?
      A great diet definitely supports optimal health, but countless basic nutrients are not available in substantial amounts through food. For example, many vegetables are grown in soil that once had vibrant mineral profiles (including Calcium), but after centuries of agriculture the minerals have been largely depleted. For that reason and many others, dietary supplements are recommended as a simple way to boost your health.
    • How soon will it start working?
      K2 + D3 starts working as soon as it enters your bloodstream. This takes approximately 20-60 minutes from consumption as the synergistic effects of Calcium, Vitamin D and Vitamin K2 can begin supporting various physiological systems and processes in the body. Many people feel the effects the first time they take K2 + D3, and can continue experiencing health improvements over time.
    • Is this product safe?
      Yes! K2 + D3 is formulated with high quality ingredients indicated as being safe for consumption by the FDA. We mix and bottle our products in FDA-Regulated facilities with rigorous quality controls at multiple points in the production process. If you are pregnant or nursing, consult with your physician before taking K2 + D3.
    • What are all the ingredients in K2 + D3?
      K2 + D3 contains four simple active ingredients: (1) Vitamin D3 as Cholecalciferol, (2), Vitamin K2, (3) Calcium Carbonate, and (4) BioPerine® to amplify the benefits of the other three compounds.
    • Can I get K2 + D3 in stores?
      K2 + D3 is exclusively available through Clinical Effects online. We are able to maintain such high quality standards and such competitive pricing by eliminating “middleman stores” and passing the savings onto our customers.
    • Will K2 + D3 reverse my medical condition?
      While K2 + D3 provides wide-ranging health benefits, it is designed to promote and maintain optimal health rather than treating any disease. If you have a serious medical condition, it is important to speak with a doctor before taking any new dietary supplement.


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