$50.00
Your discount applies with code HOLISTICLOVE.
When you buy through our links, we earn a small commission -- and that is what funds all the free education here. It never costs you more. Products are not intended to diagnose, treat, cure, or prevent any disease.
What it is
A vitamin K supplement carrying the whole family -- K1 plus K2 in both its MK-4 and MK-7 forms. Vitamin K is the cofactor the body uses to activate proteins like osteocalcin and matrix-Gla protein, the ones that direct calcium toward bone and away from soft tissue. Carrying all three forms covers both the fast-clearing (K1, MK-4) and the long-circulating (MK-7) members of the family.
Why the evidence supports it
Vitamin K's job is specific and well characterized: it switches on the calcium-handling proteins, and controlled trials of MK-7 show it measurably increases the active, carboxylated form of those proteins over months of use. That mechanism is why the full K family is favored over a single fraction -- the forms clear at different rates and reach different tissues. Full circle, this is the cell's Build function: activating the proteins that guide calcium into the bone matrix rather than soft tissue. One real caution -- vitamin K interacts with blood thinners, so anyone on those needs a doctor's sign-off first.
What it supports
- Supports the body's normal handling of calcium toward bone
- Supports healthy bone metabolism
- Works alongside vitamin D and calcium
- Provides the full K family (K1, MK-4, MK-7)
Which function it supports
Ties to the cell's Build function -- vitamin K activates the proteins that guide calcium into bone rather than soft tissue.
Learn the why behind this pillarHow it relates to your cells and mind
Every product here ties back to a specific job your body does. This one touches the functions below -- follow either link to see the mechanism in full, then dig into the studies.
What it is made of -- and the mechanisms behind it
Each ingredient acts on several of the body's functions. Taken together, this product touches these cell and mind functions -- follow any to see the mechanism in full.
The ingredients
Mechanisms drawn from our ingredient knowledge base (2 profiled ingredients). Structure and function only -- not a treatment claim.
What’s actually in it
Label revision label image on the product page, read 2026-09-11Transcribed from the manufacturer’s official Product Information Page, exactly as printed. Ingredient names that link open our research page for that ingredient, with the studies behind it.
| Amount per 1 veg capsule | Amount | % DV |
|---|---|---|
| Vitamin K1as Phytomenadione | 1000 mcg | 833% |
| Vitamin K2as MK-4 (Menaquinone-4) | 2000 mcg | ** |
| Vitamin K2as MK-7 (Menaquinone-7), from Bacillus licheniformis extract MenaQ7 | 400 mcg | ** |
- Servings per container:
- 30
- Other ingredients:
- Vegetarian capsule (hypromellose and water), bamboo extract.
Source: official Product Information Page . Amounts are the manufacturer’s, not ours. Structure and function only -- nothing here is medical advice, and nothing here may be used to diagnose, treat, cure, or prevent any disease.
The science on the ingredients
If you have had labs done
These are lab markers where this product's ingredients have measured evidence in our citation library. This is not a claim that the product will change your results -- the research attaches to the ingredient, and what a marker means depends on the whole picture. Each one links to its full entry, including what typically moves it and how to read it.
- Vitamin D (25-Hydroxyvitamin D)emerging evidence
via Vitamin K · 10 studies, 6 in people
Directs the calcium that vitamin D makes available into bone rather than soft tissue.
What people often notice when this marker sits outside the usual range
Higher: Excess comes from supplements, essentially never from sun.
Lower: Fatigue -- our library holds an explicit study of 25(OH)D and fatigue severity in adults.
- Bone Health: DEXA / T-score, CTX, P1NPemerging evidence
via Vitamin K · 4 studies, 2 in people
Carboxylates osteocalcin, which is a plausible and specific mechanism.
What people often notice when this marker sits outside the usual range
Higher: A high T-score is favourable; very high values occasionally reflect degenerative change in the spine artificially inflating the reading.
Lower: Bone loss is SILENT until a fracture.
- Vitamin D, Calcium, and Parathyroid Hormone (PTH)emerging evidence
via Vitamin K · 4 studies, 2 in people
Carboxylates osteocalcin and matrix Gla protein -- a specific, plausible mechanism.
What people often notice when this marker sits outside the usual range
Lower: CALCIUM LOW: tingling around the mouth and in fingers, muscle cramps and twitching, irritability.
- Calciumemerging evidence
via Vitamin K · 1 studies, 0 in people
Carboxylates osteocalcin and matrix Gla protein -- the proteins that put calcium into bone and keep it out of arteries.
What people often notice when this marker sits outside the usual range
Higher: "Bones, stones, groans and psychic moans" -- the old teaching phrase, and still the best summary: bone pain, kidney stones, abdominal pain and constipation, low mood and confusion.
Lower: Tingling around the mouth and in the fingers and toes.
Lab results are interpreted by a qualified clinician who knows your history. Nothing here diagnoses anything or replaces that conversation.
No product works in isolation
Every cell function above -- Sense, Exchange, Transform, Build, Maintain, Adapt -- needs the same broad base of optimal micronutrient levels running underneath it, all the time. Purely-K is not a stand-alone fix; it is one piece that plugs into that larger system. The foundation comes first, and this supports it.
Stacks well with
Pick your goal -- here is what Purely-K pairs with for each. Nothing works in isolation; these share the same systems.
For Bone & Cartilage
For Foundation Nutrition
Foundational, or targeted?
Not everything in the shop is meant to be taken forever. Some products here are foundational -- a daily nutrient base built for long-term, ongoing use. Others are targeted -- shorter-term support for a specific season, not a lifelong habit. If you are not sure which one this is, that is a fair question to ask us before you buy.
Learn more, on your terms
Do not take our word for it -- go read. Each topic below opens a pre-loaded search so you can explore the nutrient, the mechanism, or the device for yourself.
Search the full studies libraryHow to use it
Take with a meal that contains some fat, since vitamin K is fat-soluble. It pairs naturally with vitamin D at the same meal. If you take a blood thinner such as warfarin, do not start this without your doctor's guidance. Follow the label.
Use code HOLISTICLOVE at checkout.
Where to get it
Ready when you are. This link takes you to the official, verified source for this product.
Get Purely-KThe studies
See the research behind the science we point to.
Explore studiesThe blog
Plain-language reads on how it all fits together.
Read the blogOptimal nutrients are the definition of longevity
Long-term cell function depends on having what it needs, at the level it needs it, for as long as it needs it. That is the whole thesis behind everything we point you to here.
When you buy through our links, we earn a small commission -- and that is what funds all the free education here. It never costs you more. Products are not intended to diagnose, treat, cure, or prevent any disease.
Purely-K carries the whole vitamin K family -- K1 plus K2 in both MK-4 and MK-7 forms. Vitamin K is part of how the body activates the proteins that direct calcium where it belongs, toward bone. It fits people who want the full K family working alongside their vitamin D and calcium.
FAQ
What does Purely-K support?
It supports the body's normal handling of calcium toward bone and healthy bone metabolism, works alongside vitamin D and calcium, and provides the full K family (K1, MK-4, MK-7).
How do I take it?
Take with a meal that contains some fat, since vitamin K is fat-soluble. It pairs naturally with vitamin D at the same meal. If you take a blood thinner such as warfarin, do not start this without your doctor's guidance.
What makes it different?
It carries the full K family rather than a single fraction. Vitamin K is a quiet nutrient that works alongside vitamin D and calcium, and most people rarely think about it.