K2-D3 Max™
5,000 IU Vitamin D3 paired with 100mcg Vitamin K2 (MK-7).
Directs calcium where your body needs it most.*
Enhanced with BioPerine for maximum absorption.*
Ingredients
Quality Standards
Bundle Your Supply
Vitamin D and K2 benefits build with 90+ days of consistent use. Discounts apply automatically.

3 Bottles K2-D3 Max

6 Bottles K2-D3 Max
How It Works
The K2-D3 difference: Benefits that build over time.
5,000 IU Vitamin D3 paired with MK-7 K2 and BioPerine for absorption. Self-reported results from verified buyers after 90 days of daily use.
Bone
Calcium directing
86%
Stronger bone density
K2 directs calcium to bones and teeth instead of arteries
Heart
Arterial calcium management
79%
Healthy cardiovascular markers
MK-7 activates matrix Gla-protein to prevent arterial calcification
Immune
D3 immune function
73%
Fewer seasonal symptoms
D3 modulates over 200 immune-related genes including T-cell function
Formula
D3 paired with K2 for proper calcium routing.
- Vitamin D35,000 IU · 625% DV · cholecalciferol
- Vitamin K2100mcg · MK-7 menaquinone
- Calcium210mg · 16% DV · carbonate form
- BioPerine5mg · black pepper extract
Take 1 capsule with breakfast or a meal containing fat. Both D3 and K2 absorb better with dietary fat. Year round daily for stable blood levels. Retest D3 at 90 days to confirm your dose.
Verified buyer experiences.
Based on 1,247 verified reviews
My mom started this on her doctors advice for her bones and dragged me into trying it too. Im in my fifties, indoor desk job most of the year, almost no real sun exposure outside of weekends. After about three months I noticed a few things. Less of an afternoon slump on workdays. Aches in my knees that I had been writing off as just my age were less of a daily thing. My yearly physical also showed my D in a much better spot than the year before. None of this is dramatic, this is not a magic pill, but its earned its place in my routine. Sticking with it.
I had been struggling with low vitamin D for over a year and the standard recommendation from my doctor wasnt cutting it. After a few months on this combo plus more time outside in the sun I finally pushed my numbers up into a healthy range. I have backed off the dose now and Im using it for maintenance. Took a while but it worked.
Good product but I wish the larger size bottle came with a wider mouth opening. The softgels are a little awkward to fish out one at a time. Minor complaint, the actual supplement does what its supposed to.
I am pretty sun avoidant for medical reasons and my doctor has been after me for years to find a D supplement I would actually take. This one I dont mind taking. Small softgel, no taste, and my numbers are creeping up where they should be.
Gave this an honest three months and didnt notice anything. No energy change, no sleep change, no mood change. I get that supplements arent meant to feel like a drug but I expected to notice something. Capsules are easy to take so its not a complaint about the product, just one persons experience.
Works fine and Ill keep buying it but the label could be clearer about whether to take this with food or on an empty stomach. I had to look it up myself. For a fat soluble vitamin that detail matters and it shouldnt be a Google search.
My wife is the one who buys all the supplements in the house and she added these to my morning lineup after reading up on what D and K do together. I dont feel any different but I trust her research and the bottle says it works so Im along for the ride.
I take a daily medication that interferes with how my body holds onto certain vitamins, so my D had been sitting low for a while. I added this on the advice of my pharmacist and my numbers were in normal range at my next labs. Worked faster than I expected.
I had been on a basic drugstore D pill for years and decided to step up to a combo formula with K2 in it. The first thing I noticed was that my afternoon energy dip wasnt as deep on this one. Hard to say what the mechanism is exactly but the difference is real for me. Hoping next labs confirm.
First D3 K2 combo Ive tried that has actually moved my levels into the normal range. I keep a plant based diet so the vegan formula made this an easy pick over a lot of other brands.
Saw this come up in a health forum I follow and decided to give it a shot. Combining D3 and K2 in one capsule was the appeal so Im not juggling two bottles. Small softgels, clean ingredient list, plant based. Works well in my morning lineup.
Bumping my dose up from what I had been taking before because the last numbers showed I was still on the low end. Only a few days in so I cant speak to results yet, but the pills go down easy and the bottle should last a while.
Solid two in one option for D and K. No aftertaste, my D levels improved at the last checkup, and Im not running two bottles in parallel anymore. Simple, vegan, fairly priced.
Coming up on a full year on this one and I can tell when I skip a day. I have been chasing the right D supplement for a while and this is the first one that has stuck for me. Easy on the stomach taken with breakfast.
No complaints about the product itself but the seal under the cap was loose on the bottle I received and I almost didnt notice. Just check yours before you start taking them. The capsules themselves are small and easy to take and I have no other notes.
Good value for what you get. I happen to get bloodwork done more often than the average person and the trend on my D numbers since starting this has been steady. Happy with it.
My diet doesnt include much in the way of fatty fish or fortified dairy so this fills a gap I was clearly missing. Potent and no side effects so far.
Honestly I bought this because of all the positive reviews and I just dont feel anything different. Three stars because the pills are easy to take and the company seems fine, but the hype didnt match my experience. Maybe it works for people who are deficient. I wasnt and I cant tell.
Three stars because I dont really know if its doing anything for me. I take it because my doctor told me to and Im hoping the next bloodwork will give me a clearer picture. No issues with the pills themselves, they go down easy. Just want some evidence one way or the other before I commit to a fourth or fifth star.
I had a reaction to these I didnt expect. After about four days I started getting nauseous in the mornings and feeling kind of off through the afternoon. Stopped them and the symptoms cleared up. Tried again a week later just to be sure and the same thing happened. Wont be giving them another shot. Could be a fluke for me but worth flagging.
My pharmacist suggested this brand when I told her I had been buying my D at the drugstore for years. The dose is much better matched to what my body actually needs and Im glad I made the switch.
My afternoons dont drag the way they used to and I am falling asleep faster at night. Two changes I wasnt expecting from a D supplement but Ill take them.
D levels have held steady and my doctor was happy at the last checkup. I added the K2 piece on her recommendation since I had only been on D before. Easy daily routine.
A few months in and my mood and energy through the day are noticeably better. Small enough to swallow and no aftertaste at all.
Digests well and no stomach issues. Good vitamin.
Easy to swallow and the plant based formula was what I was after. Im happy with the purchase and my coworker grabbed a bottle after she saw me taking them.
Small capsule, clean ingredients, no taste before or after. My energy has come up since starting this and Im sticking with it.
Good size and no aftertaste. Recommended by my doctor and Im glad I picked this brand.
Started this in early spring after a sluggish winter and the difference in my baseline mood has been noticeable. Have been on it consistently with no issues.
Good quality, good price. No noticeable taste or scent, no stomach issues, works as advertised.
My nails have always split easily and I picked this up partly hoping that would improve. A few months in they are noticeably stronger and my hair has been shedding less in the shower. Wasnt sure what to expect but Im pleased.
Quality brand and the ingredient list is short which is what I look for in a supplement these days. Glad I gave it a try.
A couple of weeks in. No side effects, fits cleanly into my morning lineup of supplements.
Clean ingredients, short label, fits what I look for. My go to D supplement now.
No side effects, no digestion problems, no smell. Energy feels lifted on it and Ill be reordering when I run out.
Reordering. I share these with my partner so the larger bottle works out well for us. Labs not done yet but Im optimistic.
Solid value for the count in the bottle. Easy to remember to take and no strong scent or taste.
Questions?
We're here to help.
D3 blood levels rise within the first 4 weeks. Energy and immune effects often show up at 4 to 8 weeks if you were deficient. Bone density and cardiovascular benefits compound over months of consistent daily use.
D3 increases calcium absorption from food. K2 activates the proteins that direct that calcium into bones rather than arterial walls. Without K2, high dose D3 can result in calcium ending up where you don't want it. The two work as a paired system.
5,000 IU is a maintenance dose commonly used to keep blood D3 levels in the optimal 50 to 80 ng/mL range, especially for indoor heavy lifestyles or northern climates. If you're starting from severe deficiency, your provider may recommend higher loading doses for a short period. Talk to your provider and check your blood D3 level periodically.
This formula uses MK-7. MK-7 has a half life of about 72 hours, compared to MK-4 at about 1 to 2 hours. That means MK-7 keeps K2 levels stable across the day with one capsule, while MK-4 typically requires multiple daily doses. MK-7 is also the form used in most cardiovascular research.
One capsule with breakfast or another meal containing fat. Both D3 and K2 are fat soluble. Absorption increases significantly when taken with dietary fat. Avoid taking on an empty stomach.
Talk to your healthcare provider before starting if you take blood thinners (K2 can affect Warfarin specifically), if you have kidney disease, or if you take other vitamin D supplements. The dose in this formula is meant to be the primary D3 source, not stacked with additional D3.
Yes, especially if you've been deficient before or have ongoing health conditions. The test is a simple 25-hydroxyvitamin D blood test, often included in routine bloodwork. Most providers consider 50 to 80 ng/mL the optimal range. Retesting at 90 days shows whether your dose is right for you.
D3 and K2 are tolerated well by most users at the doses in this formula. Long term high dose D3 without monitoring can cause hypercalcemia (elevated blood calcium), which is why periodic blood tests are recommended.
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