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Vitamins
Vitamin D3 + K2 (High Potency)
High-potency D3 (5000 IU) paired with K2 for optimal calcium absorption. Supports immune function, bone health, and mood. Consult your healthcare provider if unsure about dosage.
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Bone & Immune Support
High-Potency D3 + K2
5000 IU of Vitamin D3 paired with Vitamin K2 (MK-7) for optimal calcium absorption and utilization. This synergistic combination supports bone density, immune function, and mood—especially important for those with limited sun exposure.
5000 IU Vitamin D3
High-potency for deficiency support
K2 (MK-7) Included
Directs calcium to bones, not arteries
Immune Support
Critical for immune cell function
This is a high-potency formula. Consult your healthcare provider to determine if this dosage is right for you.
The Science of Synergy
Why D3 + K2 Together?
Vitamin D helps your body absorb calcium, but without K2, that calcium can end up in the wrong places. K2 activates proteins that direct calcium into bones and teeth—where you want it—while keeping it out of arteries and soft tissues.
Arterial Health
K2 helps prevent calcium buildup in arteries
Bone Density
Calcium goes where it's needed most
MK-7 Form
Longest-lasting form of K2
Who Benefits Most
Limited Sun Exposure
Office workers, northern climates, or those who avoid sun
Adults Over 50
Vitamin D synthesis decreases with age
Darker Skin Tones
Melanin reduces vitamin D production from sunlight
Those With Low Levels
Blood tests showing vitamin D below 30 ng/mL
Consult your provider if:
- You're already taking high-dose vitamin D
- You have kidney disease or hypercalcemia
- You're on blood thinners (K2 may interact)
Usage Guide
Dosage & Timing
Serving Size
1 capsule
Best Time
Morning or with largest meal
Vitamin D is fat-soluble—taking with a meal containing fat improves absorption
Consistent daily timing helps maintain steady blood levels
Consider getting blood levels tested after 2-3 months to optimize dosage
High-Potency Formula
A Note on Dosage
5000 IU is considered a high-potency dose. While many adults take this amount daily, optimal dosing depends on your current vitamin D levels, sun exposure, and individual factors. We recommend testing your 25(OH)D levels and consulting your healthcare provider.
Test Your Levels
Blood test every 3-6 months recommended
Consult Your Provider
Especially if pregnant, nursing, or on medication
Target blood level: 40-60 ng/mL (100-150 nmol/L) is often cited as optimal. Ask your provider what\'s right for you.
Quality You Can Trust
Third-Party Tested
Verified potency
GMP Certified
Pharmaceutical standards
Cholecalciferol D3
Same form your body makes
90-Day Guarantee
Full refund if not satisfied
Customer Reviews
Robert M.
Verified Purchase
My vitamin D levels went from 22 to 58 ng/mL after 3 months. Doctor is happy, I feel more energetic.
ResultsKaren S.
Verified Purchase
Great combo with K2. I was taking D3 alone before but learned about the importance of K2 for bone health. This makes it easy.
D3+K2Thomas H.
Verified Purchase
Living in the Pacific Northwest, I need this. Simple routine—one capsule with breakfast.
RoutineMichelle P.
Verified Purchase
Good product, easy to swallow capsules. I take it with my morning coffee. Subscription is convenient.
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Frequently Asked Questions
Pairs Well With
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*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.
Consult your healthcare provider before starting any supplement regimen, especially if you are pregnant, nursing, taking medication, or have a medical condition.