2x4 Immune Strength™
Clinical Study

2x4 Immune Strength™

Nutristack™ Liposomal Vitamin D3
2x4 Immune Strength™
2x4 Immune Strength™
2x4 Immune Strength™
2x4 Immune Strength™
2x4 Immune Strength™
Clinical Study

2x4 Immune Strength™

Nutristack™ Liposomal Vitamin D3
What is it?

Optimize your mood, heal faster, and boost your immunity with this hyper-absorbent solution

 

What does it do?
  • Supports your respiratory health by building immunity
  • A powerful "sunshine" vitamin that balances mood and helps manage stress
  • Helps build a strong defense system against germs and viruses
  • Supports muscle recovery and bone density to promote strength and mobility

 

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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$25.99
Free Shipping for All Orders Over $50
Easy Cancellation No-hassle, Anytime
30-Day Guarantee Money-Back Promise
Sugar Free
Sugar Free
Gluten Free
Gluten Free
No Artificial Dyes
No Artificial Dyes
Non-GMO
Non-GMO
Dairy Free
Dairy Free
Soy Free
Soy Free
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Why 2x4 Supplements Are Better
Two-Step Liposomal Delivery
Nutristack® Liposomal Technology is designed to work in two phases. To absorb immediately into your blood, and then quickly and directly into your cells where they’re needed the most.
Immune Strength™ is Formulated to Support
Respiratory Support
Supports your respiratory health by building immunity
Immune Protection
Helps build a strong defense system against germs and viruses
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Mood Balance
A powerful "sunshine" vitamin that balances mood and helps manage stress
Muscle and Bone Health
Supports muscle recovery and bone density to promote strength and mobility
vitamins_image
Key Ingredient
Vitamin D3
Vitamin D3 (also known as Cholecalciferol) is a form of Vitamin D. It is a fat-soluble vitamin that is naturally produced through exposure to sunlight, can be consumed through certain foods such as egg yolks and salmon.
vitamins_image
Key ingredient
Vitamin K2
Vitamin K is a fat-soluble vitamin that our body needs for proper blood clotting, calcium absorption, and bone building. It is found in high amounts in leafy greens such as kale, spinach, and broccoli.
Why Nutritionists Love Immune Strength™
resilient
"Everyone should get extra Vitamin D3 and this is a great product that’s easy for me to take. My wife has been taking this product because she has always been deficient in her Vitamin D production. The liposomal technology has clearly made a huge difference for her creating more energy and combined with the magnesium product it has eradicated her head aches."
Author
Kevin Smith, CN
2x4 Nutritionist
Up To 15x Better Than Gummies and Pills
How 2x4 liquid supplements compare
Gummies
Pills
Absorption
up to 95%
up to 5-10%
up to 5-10%
Results
Within minutes*
Weeks
Weeks
Efficiency
Instantly through bloodstream
Digestive track
Digestive track
How to Use
As is, or mix in favorite drink
Chew to dissolve
Take with liquid
Sugar
No sugar added
Typical
No sugar added
*These statements have not been evaluated by the food and drug administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The World's Best Liposomes
The World's Best Liposomes
The World's Best Liposomes
Made without heat, pressure, solvents, or chemicals.All natural, clinically-tested and science-backed.
learn more about nutristack
  • Nutrition Multiplied • Exponentially Better Supplements • Nutrition Multiplied • Exponentially Better Supplements • Nutrition Multiplied • Exponentially Better Supplements
Experts Speak About Immune Strength™

2x4 Immune Strength™ is a liquid, liposomal Vitamin D3 solution formulated to optimize your mood, support your immune system, and promote healthy muscles and bones

2x4 Immune Strength™ uses Nutristack Lipsomal Technology to deliver Vitamin D3, Vitamin K2, and other essential vitamins and minerals directly into your bloodstream, and then immediately into your cells where they're needed the most. With daily use, 2x4 Immune Strength™ strengthens your immune system from within in order to help your body fight external viruses and infections. 

The key ingredients in 2x4 Immune Strength™ are Vitamin D3 and Vitamin K2. Vitamin D3 (also known as the sunshine vitamin) is produced naturally when your skin comes into contact with sunlight or UV light. One of its main functions is to aid in the absorption of calcium for use within your bones. Vitamin K2 is a fat-soluble vitamin that our body uses for proper blood clotting, calcium absorption, and bone building. 

Vitamin D3 is a form of Vitamin D known as cholecalciferol. It is fat-soluble and therefore easier for the body to absorb, giving you the active benefits of Vitamin D quicker and easier than ever before. 

The benefits of Vitamin D3 are endless! Vitamin D3 works to help your body absorb calcium and phosphate, which optimizes your bone and muscle health. Vitamin D3 also plays a crucial part in increasing your body's serotonin levels, which optimizes and balances your mood, and helps combat "winter blues". In addition, Vitamin D3 plays a crucial part in supporting your immune system, cardiovascular system, and inflammatory response. 

Vitamin D3 is a form of Vitamin D also known as Cholecalciferol. It is made in the skin following light exposure. Vitamin D3 is a fat-soluble vitamin which helps the body absorb calcium, magnesium, and phosphorus to keep your bones strong and healthy. It is critical for development and proper function of organs in your body. It also helps build a strong immune system, and is beneficial for your mood, heart health, hormone function, and even weight loss.

According to Yale Medicine, Vitamin D derived from sunlight is no better than the Vitamin D we get from supplements. The unfortunate reality is that the average adult does not absorb or retain sufficient amounts of Vitamin D in their body - especially during the winter months. Hence, Vitamin D solutions and supplements can help optimize your Vitamin D levels. Our Nutristack Lipsomal vitamin D3 solution known as 2x4 Immune Strength ™ has been specifically formulated to be fully and quickly absorbed into your body in order to balance your Vitamin D3 levels, supporting bone health, mood, and immunity. 

Vitamin D plays multiple roles in our body. It assists in:Promoting healthy bones and teethSupporting immune, brain, and nervous system healthRegulating insulin levels Supporting lung function and cardiovascular health

Yes, research has shown that Vitamin D levels can impact your mood. Vitamin D3 can help support the production of serotonin in your body in order to help optimize your mood.

 2x4 Immune Strength™ pairs well with 2x4 Total Immunity™- our hyper-absorbent immunity blend.2x4 Total Immunity™ contains Vitamin C, Elderberry, and Zinc. When paired with Vitamin D3, these two powerful solutions can help boost your immune system and inflammatory response in order to help your body build a barrier against viruses and bacteria. 

Each ingredient has roots in different parts of the world. Thus, we source our ingredients globally, targeting the best source for each individual ingredient. Our solutions are manufactured in our in-house facility located in Fort Collins, Colorado. Our manufacturing facility is ISO certified, cGMP Certified and FDA compliant facility.

Yes, every batch of our 2x4 solutions are third-party and clinically tested for efficacy and safety. 

Yes! Our solutions only use 100% natural ingredients, ethically sourced from around the world. In addition, all of our solutions are sugar-free, gluten-free, and non-GMO.

At 2x4, we develop all of our vitamin solutions to work for everyone in your family. Our full range of supplements have been formulated by Doctors and Nutritionists with kids in mind, so that everyone in your home can easily pour, sip, and enjoy the benefits of their vitamins. 

Nutristack Liposomal technology is our patented 2-step delivery process that allows your body to absorb 95% of the nutrients found in your 2x4 solutions. First, our Nutristack technology wraps the nutrients inside tiny, microscopic bubbles that mimic your body's cell membranes. This bubbles are known as Liposomes. Then, the Nutristack delivers those nutrients directly into your bloodstream and through your cell membranes without losing any of the nutrients inside. This increases the bioavailability of our vitamins by over 15x, making them the most absorbing and effective supplement available. Our Nutristack Liposomal Technology is fast acting, highly absorbable, and effective.

Liposomal supplements are better than your average gummy and pill because they have high absorbability. Simply put, it's a delivery mechanism that ensures your body reaps the full benefits of the vitamins you take, without losing anything along the way. Liposomal supplements work faster, and have longer lasting effects than traditional supplements and gummies.

Have you ever heard the term "No Pain, No Gain"? That applies to our liposomal solutions. Our vitamin solutions don't taste like candy, but that's because they actually work. Vitamins and nutrients aren't meant to taste good, and if they do, it means the nutrient composition is actually fairly low or non existent. So if you care more about taking vitamins that actually work, then a little bit of pain goes a long way ;) However, you can easily mix all of our vitamins with your favorite juice, smoothie, or breakfast. This should hide the taste completely! 

Absolutely! Our solutions are meant to be stacked, and can be mixed together without upsetting your stomach. We recommend mixing your solutions together with a glass of water, your morning smoothie, or favorite juice for optimal taste

Frequently Bought Together
Clinical Study
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Maintain a strong
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Peer-Reviewed Clinical Study
2x4 Resilient-C™
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Combats stress,
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Promote a sense of calm and tranquility

Customer Reviews

Based on 51 reviews
92%
(47)
8%
(4)
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(0)
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0%
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M
Michelle S.
liquid is better

This is a quality liquid D3 K2 product. I prefer liquid supplements whenever available so I don’t have so many capsules to swallow and I feel i get more absorption from liquids. The taste isn’t great but not that unpleasant either. Have already reordered.

T
Tracy H.
adjustable dose

Easy to use and doesn't taste much like anything. Great to use with kids and adults. Great value. Must have have in a daily vitamin to stay healthy. Very helpful in the pacific northwest due to our lack of sun. Easy to take

S
Sophie Elms
Thank you so much

I have to say, my immune level has increased since using this product! I usually have several sinus infections each year along with bronchitis and pneumonia; so far I haven’t had any of those illnesses. I have been using this five months now and all I can say is I wished I knew about this product sooner! To the makers of this product— thank you so much!!

T
Tami Whiteman
I love the absorbency

I took a dose and felt the benefits right away! I suffer from depression and have really felt off lately. I took a teaspoon full of 2x4 Immune Strength and started feeling better. Easy to swallow, the taste isn't the best but it goes away quickly. I love the absorbency and so far so good!!!

K
Karen Lee
arrived fast

Arrived super quick. Was well packed. Like this product for ease of application. I’m hoping it will boost my immunity. High quality product. Taste could use some attention but it’s not terrible.

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