Vitamin D · NIH
Vitamin D helps the body absorb calcium and is needed for bone health and normal immune function. The NIH lists 4,000 IU (100 mcg) per day as the upper intake level for adults.
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Precision Nutrition
D3 + K2
Vitamin D3 and vitamin K2 together, for bone and immune support.*
$42.00
125 mcg (5,000 IU) D3 + 100 mcg K2 per softgel · 180 softgels
- Supports bone health*
- Supports normal immune function*
- K2 supports healthy calcium utilization*
- Supports normal muscle function*
Zyndio scientific partner
About the product
Vitamin D helps your body absorb calcium, and vitamin K2 activates proteins involved in bone metabolism, so they’re a natural pair. Each softgel provides 5,000 IU of vitamin D3 and 100 mcg of vitamin K2 as MK-7, suspended in coconut oil because both are fat-soluble.
| Serving size | 1 softgel |
|---|---|
| Servings per container | 180 |
| Vitamin D3 (as cholecalciferol) | 125 mcg (5,000 IU) · 625% DV |
| Vitamin K2 (as menaquinone-7) | 100 mcg · 83% DV |
Other ingredients: Coconut oil, gelatin, glycerin, purified water, beeswax
How to use
- Take 1 softgel daily with a meal that contains some fat.
- Many people take it with their largest meal of the day.
- Consider checking your vitamin D level before and during supplementation.
- Store in a cool, dry place.
Who it’s for
- Adults looking for bone and immune support*
- People who get limited sun exposure
- People who want D3 and K2 in one softgel
Talk to your healthcare provider before use. 5,000 IU is above the NIH upper intake level for adults (4,000 IU/day), so the right dose depends on your vitamin D level. Vitamin K2 can interact with warfarin and other blood thinners. Contains gelatin and lanolin-sourced vitamin D3; this formula is not vegetarian.
Meet the scientist
Precision nutrition, grounded in measured biology.
Professor Jin-Xiong She, PhD is Zyndio’s scientific partner and the founder and CEO of Jinfiniti Precision Medicine. His work brings molecular genetics, biomarker testing and nutritional formulation together.
His academic career spans four decades, with more than 500 peer-reviewed publications. His approach starts with understanding your biology, then measuring how it changes.
Meet Dr. She and explore the partnershipThe research behind the ingredients
Vitamin K2 · Clinical trial
In a 3-year randomized, placebo-controlled trial of 244 healthy postmenopausal women, 180 mcg/day of vitamin K2 (MK-7) helped slow the normal age-related decline in bone mineral density. (This product provides 100 mcg per softgel.)
Read the sourceVitamin K · NIH
Vitamin K is a cofactor for proteins involved in bone metabolism. It can interact with warfarin and similar anticoagulants.
Read the sourceThese studies examine individual ingredients, often at different doses or in specific populations. They did not test this exact Zyndio product. Research summaries are educational, and individual results vary.
Test. Act. Optimize.
- 01
Test
Understand your starting point with biomarker testing.
- 02
Act
Choose support informed by your needs and healthcare provider.
- 03
Optimize
Measure again and adjust your routine with appropriate guidance.
Dr. She’s philosophy in 75 seconds
D3 + K2
$42.00 · 125 mcg (5,000 IU) D3 + 100 mcg K2 per softgel · 180 softgels
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Frequently asked questions
Why take D3 and K2 together?
Vitamin D helps you absorb calcium, and vitamin K2 activates proteins that help direct calcium where it belongs, like your bones.
When should I take it?
With a meal that contains fat, because both vitamins are fat-soluble. Morning or afternoon both work.
Is 5,000 IU right for me?
It depends on your current vitamin D level. A blood test and a conversation with your healthcare provider are the best way to decide.
Why MK-7?
MK-7 is a form of vitamin K2 that stays in the body longer than some other forms, which is why it’s often chosen for once-daily use.
Nutrition and prescription care are separate.
These supplements are over-the-counter products and are not prescribed or physician-reviewed. Zyndio’s prescription NAD+ therapies follow a separate physician-reviewed care pathway.
Explore prescription NAD+*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
Consult your healthcare provider before starting any supplement, especially if you are pregnant or nursing, have a medical condition, or take medication. Keep out of reach of children. Individual results vary.