K2-D3 Max™
D3 + K2 work together to direct calcium where it belongs.*
High-potency D3 for year-round immune support.*
K2 helps keep calcium out of arteries.*
Vitamin D3 (Cholecalciferol), Vitamin K2 (MK-7 Menaquinone), Calcium Carbonate, BioPerine® (Black Pepper Extract)
Delivery — Ships out next business day. Free insured shipping on $100+.
Quality — Made in USA. GMP-Certified. 3rd-Party Tested.
Standards — Non-GMO. Keto-Friendly. Gluten-Free. No Artificial Fillers.
Guarantee — 60-Day Money-Back.
Your K2-D3 Protocol
Vitamin K2 and D3 benefits build with 90+ days of consistent use
3 Bottles
6 Bottles
D3 Without K2 Is Only Half the Equation
D3 helps absorb calcium. K2 tells it where to go. Without K2, calcium can end up in your arteries instead of your bones.*
Bone Strength
Heart Health
Immune Support
Mood Support
Calcium Routing
Absorption
Bone Strength
D3 + K2 + Calcium
D3 helps absorb calcium from food. K2 activates the proteins that deposit it into bone matrix. Without K2, calcium may not reach its destination. Together they build and maintain bone density.*
What to Expect
Energy & Mood*
- D3 levels begin rising within days of supplementation
- Many notice improved energy and mood within the first two weeks
- Take with a fat-containing meal for best absorption from day one
Immune Support*
- D3 blood levels measurably rise, confirmable with a blood test
- Immune cell function supported at optimal D3 levels
- K2 begins directing calcium to appropriate tissues
Bone & Cardiovascular*
- K2 and D3 synergy supports calcium routing over sustained use
- Bone density changes require months of consistent supplementation
- Arterial health benefits from K2 build over the long term
Sustained Protection*
- Continue year-round. Sun exposure alone rarely achieves optimal D3
- Seasonal immune and mood benefits sustained with consistent use
- Annual blood testing recommended to confirm optimal D3 levels
How to Use: Take 1 capsule twice daily with a meal containing fat. D3 and K2 are fat-soluble. Dietary fat is required for proper absorption. Morning is optimal. Avoid taking late in the day as vitamin D may affect sleep. Use year-round.*
Customer Results
91%
Report improved energy within 30 days
87%
Better Mood
84%
Immune Support
2-4
Weeks to Results
*Results vary. Based on customer surveys and order data.
What's Inside
4 Synergistic Ingredients
5,000 IU
Vitamin D3
100mcg
K2 (MK-7)
210mg
Calcium
- GMP Certified Facility
- Third-Party Tested
- MK-7 Form (Most Bioavailable K2)
- BioPerine Certified Ingredient
- Made in the USA
3,156 verified customer reviews
D3 levels went from 18 to 62
"My doctor flagged severe vitamin D deficiency at my annual physical. Level was 18, should be above 40. Added this because it includes K2 for proper calcium routing. Retested at 90 days and came back at 62. My doctor was impressed with how fast it came up."
The K2 is why I chose this one
"Most D3 supplements don't include K2. That's a problem because without K2 the calcium D3 helps absorb can end up in your arteries instead of your bones. I'm a nurse and this is something most people don't know. This formula pairs them correctly. It's the only D3 I recommend to my patients."
Winter mood and energy completely different
"I live in Seattle and every winter I feel like a different person. Low energy, low mood, dragging through December to March. Started this in October and this was the first winter in years where I didn't feel like I was just surviving. My energy stayed consistent and the seasonal dip was barely noticeable."
Common Questions
Frequently Asked Questions
Why do I need K2 with D3?
D3 increases calcium absorption. K2 directs that calcium to your bones and away from your arteries. Without K2, the extra calcium D3 helps absorb may deposit in soft tissue and blood vessel walls. K2 completes the system.
Is 5,000 IU safe daily?
For most adults, yes. The Endocrine Society suggests up to 4,000 IU daily as generally safe, with many practitioners recommending 5,000 IU for those with deficiency. Get a blood test to confirm your levels and consult your doctor if unsure.
What's MK-7 and why does it matter?
MK-7 is the most bioavailable and longest-acting form of vitamin K2. It stays active in your bloodstream for up to 72 hours vs. 4 to 6 hours for MK-4. One daily dose provides sustained K2 activity around the clock.
Can I take this if I'm on blood thinners?
If you take warfarin or other vitamin K-sensitive blood thinners, consult your doctor before taking K2. K2 can affect how these medications work. This is not a concern with other types of blood thinners.
When should I take it?
With a meal containing fat, ideally in the morning or early afternoon. Both D3 and K2 are fat-soluble and require dietary fat for absorption. Some people report D3 affects sleep when taken late in the day.
Do I still need this in summer?
Most likely. Sun exposure produces D3 but factors like sunscreen, latitude, skin tone, and time spent indoors mean most adults don't achieve optimal levels from sun alone. Year-round supplementation is the most reliable approach.
