What It Does
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Durable D3 COMPLEX also includes easy-to-absorb magnesium and zinc, two important mineral co-factors in bone building and calcium absorption that are required for vitamin D activation and utilization within the body. Without adequate levels of these critical co-factors, taking vitamin D may not be helpful at all. The result is a comprehensive, exceptionally bioactive and potent vitamin D supplement that provides unparalleled support for bone, cardiovascular, cognitive and immune system health.*
This synergistic combination of powerful, clinically validated ingredients:*
- Supports strong, resilient bones
- Promotes healthy bone mineral density
- Helps inhibit calcium buildup in the arteries
- Promotes optimal cardiovascular and cognitive health
- Helps maintain optimal immune system function
- Provides comprehensive health benefits in just one small capsule per day
General Product Info:
- 30 vegetarian capsules (a 30 day supply)
- Made in the USA in an FDA inspected, cGMP facility
- Every batch is 3rd party tested for safety and purity
- Packaged in premium, non-toxic amber glass bottles
- One-year return policy with free return shipping
Why It Works
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With its ability to regulate over 1,000 genes in the human body, vitamin D influences just about every aspect of your health. It plays an integral role in building strong bones, maintaining cardiovascular and cognitive health, and regulating your immune system.*
Despite vitamin D’s importance, a large percentage of adults (up to 50% by some estimates) are deficient, which is why supplementing with a high-potency vitamin D supplement is so important. Durable D3 COMPLEX features 125 mcg (5,000 IU) of bioactive vitamin D3. This natural D3 form has been shown to be up to 87% more effective than the synthetic D2 form at raising blood levels of vitamin D. Unfortunately, many inferior vitamin D supplements as well as foods fortified with vitamin D are made with the synthetic D2 form.*
How Vitamin D and Vitamin K Work Together to Keep You Healthy
When you take supplemental vitamin D, it’s important to make sure you’re also getting enough vitamin K. That’s because increasing levels of vitamin D in your blood typically increases calcium levels too, and you need vitamin K to help activate hormones and enzymes that make sure the calcium ends up in your bones where it belongs—instead of in your arteries, organs or other soft tissue.*
There are two primary forms of vitamin K, and it’s important to make sure you are getting adequate amounts of both in your diet. Vitamin K1 is the most common form of vitamin K found in food, primarily in leafy green vegetables. Vitamin K2 (also known as menaquinone) however, is typically found only in certain animal-derived and fermented foods that are largely missing from the modern diet, which makes K2 supplementation critically important.*
K2VITAL™ Goes Above and Beyond Other Forms of Vitamin K2
Durable D3 COMPLEX provides a powerful 180 mcg dose of highly bioactive K2VITAL™ vitamin K2 in the superior, all-trans menaquinone-7 (MK-7) form. K2VITAL™ is made with unique micro-encapsulation technology that stabilizes the seven double molecular bonds (the “7” in MK-7), resulting in a molecule with all trans isomers (the biologically active form in humans). While many supplements are made with inferior, unstable forms of MK-7 or the less effective MK-4, K2VITAL™ goes above and beyond other vitamin K2 ingredients to offer unmatched stability, purity, bioavailability and effectiveness.*
At the potent, clinically validated 180 mcg dose found in Durable D3 COMPLEX, vitamin K2 as MK-7 has been shown in multiple research studies to help increase bone mineral density and keep arteries healthy and pliable. Taken together, vitamins D3 and K2 have been shown in numerous clinical studies to support healthy bone mineralization, a healthy cardiovascular system, optimal immune function and a higher overall level of wellness.*
Synergistic Mineral Co-Factors Unlock Vitamin D’s Full Benefits for Maximum Bone & Heart Health Support
In addition to vitamin K2, this all-in-one formula is enhanced with two critical, synergistic mineral co-factors, magnesium and zinc, which are required for vitamin D absorption and activation within the body.*
Durable D3 COMPLEX is made with premium, easy-to-absorb citrate forms of magnesium and zinc to help ensure maximum effectiveness.*
Magnesium, an essential mineral involved in maintaining healthy bone mineral density and cardiovascular health, helps ensure that calcium is deposited in the right places, transporting it across cell membranes and into bone tissue.*
Magnesium also is one of the most important co-factors needed to activate vitamin D in the body. The enzymes that metabolize vitamin D all seem to require magnesium to function properly, which means that if your magnesium level is too low, your body cannot activate or process vitamin D.*
Similarly, your body needs adequate levels of zinc in order to absorb and properly utilize vitamin D. Zinc plays a major role in the regulation of vitamin D receptors within the body, so if your zinc levels are low (which many people’s are), you won’t get the full benefits of vitamin D supplementation.*
Zinc is also involved in the synthesis of collagen, a protein that supports the structural integrity of bones, and, like magnesium, is essential for proper bone mineralization, helping to build strong, healthy bones.*
If you’re looking for an advanced, expertly formulated vitamin D formula that will help you get the most out of what vitamin D supplementation has to offer for bone health, cardiovascular and cognitive wellness, immune support and more, look no further than Durable D3 COMPLEX.*
Why We Use Amber Glass Bottles vs. Clear Glass or Plastic
- Glass is infinitely recyclable and reusable.
- Protects the ingredients from UV light damage.
- No risk of chemicals in plastics leaching into pills.
Directions & Label Information
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For adults only. Take one capsule daily with food or as directed by your healthcare practitioner. Do not exceed recommended dose.
Clean Formula Guarantee
Non-GMO | Gluten Free | Vegan | Dairy Free | Soy Free | Nut Free | Egg Free | Free of Artificial Colors or Preservatives
Timing of Results
Many people will feel improvements after 30 days. However, as with all natural products, results can vary for each individual. Dr. Passero recommends taking Durable D3 COMPLEX for at least 90 days before evaluating your progress so you can make a proper assessment. You can expect results to continue to improve over time. The best way to determine results is through a simple blood test to measure vitamin D levels.
Side Effects & Interactions
Since Durable D3 COMPLEX is made with 100% natural ingredients, the vast majority of users have no side effects, allergic reactions or interactions. It has no known interactions with most prescription drugs, medications or other dietary supplements.
Cautions
If taking medication, pregnant or breastfeeding consult your healthcare practitioner before use. Keep out of the reach of children.
Contents
Each bottle contains 60 vegetarian capsules (typically a 30 day supply).
Storage
Keep tightly closed in a cool, dry place.

Durable D3 COMPLEX®
Pure, High-Potency D3, K2 & Co-Factors
Savings based on 1 bottle price

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What It Does
+
Durable D3 COMPLEX also includes easy-to-absorb magnesium and zinc, two important mineral co-factors in bone building and calcium absorption that are required for vitamin D activation and utilization within the body. Without adequate levels of these critical co-factors, taking vitamin D may not be helpful at all. The result is a comprehensive, exceptionally bioactive and potent vitamin D supplement that provides unparalleled support for bone, cardiovascular, cognitive and immune system health.*
This synergistic combination of powerful, clinically validated ingredients:*
- Supports strong, resilient bones
- Promotes healthy bone mineral density
- Helps inhibit calcium buildup in the arteries
- Promotes optimal cardiovascular and cognitive health
- Helps maintain optimal immune system function
- Provides comprehensive health benefits in just one small capsule per day
General Product Info:
- 30 vegetarian capsules (a 30 day supply)
- Made in the USA in an FDA inspected, cGMP facility
- Every batch is 3rd party tested for safety and purity
- Packaged in premium, non-toxic amber glass bottles
- One-year return policy with free return shipping
Why It Works
+
With its ability to regulate over 1,000 genes in the human body, vitamin D influences just about every aspect of your health. It plays an integral role in building strong bones, maintaining cardiovascular and cognitive health, and regulating your immune system.*
Despite vitamin D’s importance, a large percentage of adults (up to 50% by some estimates) are deficient, which is why supplementing with a high-potency vitamin D supplement is so important. Durable D3 COMPLEX features 125 mcg (5,000 IU) of bioactive vitamin D3. This natural D3 form has been shown to be up to 87% more effective than the synthetic D2 form at raising blood levels of vitamin D. Unfortunately, many inferior vitamin D supplements as well as foods fortified with vitamin D are made with the synthetic D2 form.*
How Vitamin D and Vitamin K Work Together to Keep You Healthy
When you take supplemental vitamin D, it’s important to make sure you’re also getting enough vitamin K. That’s because increasing levels of vitamin D in your blood typically increases calcium levels too, and you need vitamin K to help activate hormones and enzymes that make sure the calcium ends up in your bones where it belongs—instead of in your arteries, organs or other soft tissue.*
There are two primary forms of vitamin K, and it’s important to make sure you are getting adequate amounts of both in your diet. Vitamin K1 is the most common form of vitamin K found in food, primarily in leafy green vegetables. Vitamin K2 (also known as menaquinone) however, is typically found only in certain animal-derived and fermented foods that are largely missing from the modern diet, which makes K2 supplementation critically important.*
K2VITAL™ Goes Above and Beyond Other Forms of Vitamin K2
Durable D3 COMPLEX provides a powerful 180 mcg dose of highly bioactive K2VITAL™ vitamin K2 in the superior, all-trans menaquinone-7 (MK-7) form. K2VITAL™ is made with unique micro-encapsulation technology that stabilizes the seven double molecular bonds (the “7” in MK-7), resulting in a molecule with all trans isomers (the biologically active form in humans). While many supplements are made with inferior, unstable forms of MK-7 or the less effective MK-4, K2VITAL™ goes above and beyond other vitamin K2 ingredients to offer unmatched stability, purity, bioavailability and effectiveness.*
At the potent, clinically validated 180 mcg dose found in Durable D3 COMPLEX, vitamin K2 as MK-7 has been shown in multiple research studies to help increase bone mineral density and keep arteries healthy and pliable. Taken together, vitamins D3 and K2 have been shown in numerous clinical studies to support healthy bone mineralization, a healthy cardiovascular system, optimal immune function and a higher overall level of wellness.*
Synergistic Mineral Co-Factors Unlock Vitamin D’s Full Benefits for Maximum Bone & Heart Health Support
In addition to vitamin K2, this all-in-one formula is enhanced with two critical, synergistic mineral co-factors, magnesium and zinc, which are required for vitamin D absorption and activation within the body.*
Durable D3 COMPLEX is made with premium, easy-to-absorb citrate forms of magnesium and zinc to help ensure maximum effectiveness.*
Magnesium, an essential mineral involved in maintaining healthy bone mineral density and cardiovascular health, helps ensure that calcium is deposited in the right places, transporting it across cell membranes and into bone tissue.*
Magnesium also is one of the most important co-factors needed to activate vitamin D in the body. The enzymes that metabolize vitamin D all seem to require magnesium to function properly, which means that if your magnesium level is too low, your body cannot activate or process vitamin D.*
Similarly, your body needs adequate levels of zinc in order to absorb and properly utilize vitamin D. Zinc plays a major role in the regulation of vitamin D receptors within the body, so if your zinc levels are low (which many people’s are), you won’t get the full benefits of vitamin D supplementation.*
Zinc is also involved in the synthesis of collagen, a protein that supports the structural integrity of bones, and, like magnesium, is essential for proper bone mineralization, helping to build strong, healthy bones.*
If you’re looking for an advanced, expertly formulated vitamin D formula that will help you get the most out of what vitamin D supplementation has to offer for bone health, cardiovascular and cognitive wellness, immune support and more, look no further than Durable D3 COMPLEX.*
Why We Use Amber Glass Bottles vs. Clear Glass or Plastic
- Glass is infinitely recyclable and reusable.
- Protects the ingredients from UV light damage.
- No risk of chemicals in plastics leaching into pills.
Directions & Label Information
+
For adults only. Take one capsule daily with food or as directed by your healthcare practitioner. Do not exceed recommended dose.
Clean Formula Guarantee
Non-GMO | Gluten Free | Vegan | Dairy Free | Soy Free | Nut Free | Egg Free | Free of Artificial Colors or Preservatives
Timing of Results
Many people will feel improvements after 30 days. However, as with all natural products, results can vary for each individual. Dr. Passero recommends taking Durable D3 COMPLEX for at least 90 days before evaluating your progress so you can make a proper assessment. You can expect results to continue to improve over time. The best way to determine results is through a simple blood test to measure vitamin D levels.
Side Effects & Interactions
Since Durable D3 COMPLEX is made with 100% natural ingredients, the vast majority of users have no side effects, allergic reactions or interactions. It has no known interactions with most prescription drugs, medications or other dietary supplements.
Cautions
If taking medication, pregnant or breastfeeding consult your healthcare practitioner before use. Keep out of the reach of children.
Contents
Each bottle contains 60 vegetarian capsules (typically a 30 day supply).
Storage
Keep tightly closed in a cool, dry place.







Optimize Your Bone, Heart, Brain & Immune Health
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Vitamin D3
Vitamin D influences everything from bone health to immune function. The D3 form has been shown to be up to 87% more effective than the D2 form at raising vitamin D levels.*
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K2VITAL™ Vitamin K2
K2VITAL™ provides highly bioactive, easy-to-absorb vitamin K2 as menaquinone-7 (MK-7), which has been clinically proven to effectively promote strong bones and healthy arteries.*
-
Magnesium & Zinc
These essential mineral co-factors work synergistically to promote proper vitamin D absorption and activation, bone mineralization and optimal cardiovascular health.*
The Doctor Behind The Formula

Dr. Kevin Passero
Functional Medicine Expert, Licensed Naturopathic Physician and Durable Co-Founder
I often stress to my patients that maintaining optimal levels of vitamin D are vitally important for overall health, and proper absorption is critical. Durable D3 COMPLEX features a therapeutic dose of active vitamin D3, along with a clinically validated form of vitamin K2 plus other co-factors for enhanced absorption and an array of synergistic benefits.

We have been using Durables D3 product for a short time but we know we are being protected by a great product that is protecting us from various heart related ailments thst ate genetic!
I have been taking D3 for about 5 months. My doctor and myself are very happy with the results of my dexa scan. Bone strength and health is very important to me. Also this company has the best customer service. They always answer your emails in a timely manner and have always answer my questions and helped me with my orders.
This is the best D3 supplement I've tried. No need to buy the K2, Magnesium or Zinc separately, It's all there.
I’ve been on the Durable supplements for 4 1/2 months now and absolutely love them. I have definitely noticed a difference in lowering my cholesterol levels n my blood pressure and having more cognitive clarity from some of the supplements I have purchased. I would highly recommend these products.
I believe that I healed more quickly because of taking these supplements. Great products! Thank you! I take Berberine, Blood Pressure, Red Yeast Rice, D3 Complex, CoQ10, Longevity and others.