"I have used the product for many years. Quality of ingredients is very important to me and Sun Coast has a focus on high quality ingredients!"
D3 Shield
A doctor-designed vitamin D + K2 formula, for whole-body vitality. Supports everything from bone strength, to cardiovascular health, to mood, and immune health… with safety and purity.
For Whole Body Wellness 
Perfectly Paired D3 + K2-7 
Taken Daily With Breakfast Choose Options:
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1 Bottle
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3 Bottles
MOST POPULAR -
6 Bottles
BEST VALUE
"I have used the product for many years. Quality of ingredients is very important to me and Sun Coast has a focus on high quality ingredients!"
"Subtle But Constant! Though the results are subtle, I noticed that I was feeling more balanced and my ups and downs were more leveled out. So sometimes when I was depressed and couldn’t figure out why, I would realize that I was probably low on Vitamin D. So once I was on D3 Shield, I realized I hadn’t wondered why I was depressed for a long stretch of time. So you have to know yourself well, to notice that you haven’t felt down for a long time!!!"
Melba Brown
Verified Buyer
1-Year Money-Back Purchase Protection
The Potential - And Perils - of Vitamin D…
Yet D3 is critical for everything from immunity, to bone health, to your mood, and even your heart…
But be careful: take too much vitamin D, and it can get stuck in your arteries, where it attracts calcium and starts to clot.
Yet if you’re one of the millions of Americans who just aren’t getting enough daily sunshine for all the D3 they need, there’s now a safe, effective way to get all the D3 you need, without the risk.
D3 Shield
The Safe, Effective D3 Supplement
Vitamin D3
It supports bone strength, heart health, an upbeat mood, healthy sleep, and healthy aging - it’s one vitamin you don't want to be without!
But it won’t do much good if your body can’t absorb it, or if it gets stuck in your arteries and calcifies. That’s why we pair it with Vitamin K2.
Vitamin K2-7
Plus, we use K2-7 - a “super K2” that’s up to 1000x stronger than the regular K2 in most supplements.
It acts as a powerful antioxidant, helping to protect cells, boost energy, and support bone health.
We’ve packed research-supported dosages of vitamin D3 and K2-7 into each capsule of D3 Shield for a happy, healthy you.
D3 Shield
The Safe, Effective D3 Supplement
Vitamin D3
It supports bone strength, heart health, an upbeat mood, healthy sleep, and healthy aging - it’s one vitamin you don't want to be without!
But it won’t do much good if your body can’t absorb it, or if it gets stuck in your arteries and calcifies. That’s why we pair it with Vitamin K2.
Vitamin K2-7
Plus, we use K2-7 - a “super K2” that’s up to 1000x stronger than the regular K2 in most supplements.
It acts as a powerful antioxidant, helping to protect cells, boost energy, and support bone health.
We’ve packed research-supported dosages of vitamin D3 and K2-7 into each capsule of D3 Shield for a happy, healthy you.
1-Year Money-Back Purchase Protection
"Love D3 Shield! This product is working very well for me. I take it every morning. It does not give me the jitters and makes me feel great. I don’t have the urge to eat between meals and I don’t have the urge to eat junk food. It has been very good for me! I feel like it has been a great help for me to lose weight"
Deneyce Bahe
Verified Buyer
How To Use It
Want an even stronger foundation? Pair D3 Shield with our OmegaVive formula for heart and brain support, and VitaCell+ for whole-body cellular wellness.
How To Use It
Want an even stronger foundation? Pair D3 Shield with our OmegaVive formula for heart and brain support, and VitaCell+ for whole-body cellular wellness.
Perfect For...
Anyone With Low Energy, Mood Dips, Or Frequent Immune Stress
People Who Don’t Get Enough Daily Sunshine
Adults Concerned About Bone Strength or Arterial Calcification
What to Expect...
D3 Shield is designed for daily use, to help restore optimal vitamin D levels and put it to work, where your body needs it.
Day 7-10
Many people report feeling more upbeat, more focused, and just a little stronger overall. You may also notice improved mobility, and better sleep quality.
Day 30
With consistent use, vitamin D3 levels rise, while K2-7 helps shuttle calcium out of arteries and into bones. Joints may feel looser. Breathing is easier. Moods stay more stable.
Day 60
Bone strength, cardiovascular resilience, and immune balance continue to improve. You feel less reactive, more energized, and better equipped to handle stress.
Day 90
D3 Shield becomes a quiet engine behind your vitality. You’re moving with more confidence, thinking more clearly, and sleeping more deeply. You may even feel “younger”.
Beyond...
Most customers find they don’t realize how off they used to feel, until they stop taking D3 Shield. That’s when they understand: this isn’t just a vitamin. It’s a daily dose of “I’ve got this.”
Try D3 Shield With Confidence
The Perfect Pairing
D3 Shield combines clinical-strength D3 with K2-7. That’s the superior form of vitamin K that helps your body absorb D3, and guide calcium into your bones (and not your arteries). It’s a simple daily ritual to support immunity, heart health, bone strength, and overall resilience… without the risk of over-supplementing D3.
Made in The USA
D3 Shield is manufactured at a CGMP facility, just outside of Salt Lake City, UT, using domestically and internationally sourced ingredients. Every batch is tested for consistency and purity, so you can rest assured that what’s on the label is what’s in the bottle.
1 Year of Purchase Protection
Whether you buy one bottle or many, one-time or subscription, you’re protected by our 1 year guarantee. Use up your entire order, and if you don’t love it, simply return your empty bottles for a full refund of your purchase price. We make it easy and hassle-free, over phone, email or our self-service website.
Quick Shipping
D3 Shield orders are packed every afternoon, M-F, at our midwest warehouse, and sent out via USPS Priority Mail the following day. Most shipments arrive within 4 days of your order. Exact shipping estimates can be found on checkout.
Designed by Dr. Mark Rosenberg
D3 Shield was inspired by Dr. Rosenberg’s anti-aging research, and vast experience with anti-aging compounds. It’s a one-of-a-kind formula, with unique ingredients, crafted by one of America’s top anti-aging experts.
The Perfect Pairing
D3 Shield combines clinical-strength D3 with K2-7. That’s the superior form of vitamin K that helps your body absorb D3, and guide calcium into your bones (and not your arteries). It’s a simple daily ritual to support immunity, heart health, bone strength, and overall resilience… without the risk of over-supplementing D3.
Made in The USA
D3 Shield is manufactured at a CGMP facility, just outside of Salt Lake City, UT, using domestically and internationally sourced ingredients. Every batch is tested for consistency and purity, so you can rest assured that what’s on the label is what’s in the bottle.
1 Year of Purchase Protection
Whether you buy one bottle or many, one-time or subscription, you’re protected by our 1 year guarantee. Use up your entire order, and if you don’t love it, simply return your empty bottles for a full refund of your purchase price. We make it easy and hassle-free, over phone, email or our self-service website.
Quick Shipping
D3 Shield orders are packed every afternoon, M-F, at our midwest warehouse, and sent out via USPS Priority Mail the following day. Most shipments arrive within 4 days of your order. Exact shipping estimates can be found on checkout.
Designed by Dr. Mark Rosenberg
D3 Shield was inspired by Dr. Rosenberg’s anti-aging research, and vast experience with anti-aging compounds. It’s a one-of-a-kind formula, with unique ingredients, crafted by one of America’s top anti-aging experts.
Radiant Customers Around The World
Dr. Rosenberg on D3 Shield
“Vitamin D3 is so crticial for overall health, especially in patients over 40. It supports everything from immune function and mood to bone density and cardiovascular health.
But what many people don’t realize is that vitamin D3 doesn’t work in isolation. In fact, when taken without sufficient vitamin K2, it can lead to calcium building up in the arteries.
That’s why I formulated D3 Shield. It combines a powerful dose of vitamin D3 with K2-7, the highly bioavailable form of K2, to ensure that D3 doesn’t combine with calcium in the arteries. This pairing is essential not only for maximizing the benefits of D3, but also for preventing some of the complications associated with D3 supplementation alone.
It’s a simple, research-based solution I take myself and recommend widely in my practice, for immune resilience, musculoskeletal strength, cardiovascular health, and long-term vitality.”
Dr. Mark Rosenberg, M.D.
Frequently
Asked Questions
Vitamin D3 is great at extracting calcium from food, and getting it into your bloodstream. But it doesn't control where it goes - and that can mean calcium getting stuck in arteries, or the kidney. Enter Vitamin K2, the "calcium coach." It helps guide the calcium into your bones, right where it's needed!