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Bones & joints
CORE HEALTHY AGINGPENDING CLINICAL VALIDATION

Bones & joints

Six ingredients: four for the upkeep of normal bones, two for the joints. The four bone ingredients carry an authorised EU claim for exactly that. The two joint ingredients are here on published trials, not on a claim. It is a base formula you keep for months, not a quick fix for a sore joint.

WHENNight, with dinner
WITH FOODYes, preferably. With your dinner
DOSE VOLUME3.8 ml, in nineteen 0.2 ml pulses
INGREDIENTS6 active, 0 fillers
CARTRIDGE45 ml · up to 11 nights
SLOT1 of the 6 in your device

WHAT IS IN IT

Six actives. Nothing else.

These are the reference doses of the formula. Your device pours them in steps of 0.2 ml, so what you actually take on a given night can sit below the reference when your data does not call for the full dose.

INGREDIENTFORMPER DOSE% NRVWHAT IT IS THERE FOR
CalciumCitrate800 mg100%Needed for the maintenance of normal bones
Vitamin D3Cholecalciferol25 µg500%Maintenance of normal bones and normal absorption and utilisation of calcium and phosphorus
Vitamin K2Menaquinone-7 (MK-7 trans)75 µg100%Maintenance of normal bones
MagnesiumBisglycinate200 mg53%Maintenance of normal bones
Type II collagenUndenatured (UC-II)40 mg—Joint support on a published trial. No EU claim has ever been submitted for it
ChondroitinSulfate800 mg—Studied for knee osteoarthritis, mainly alongside glucosamine. Its EU joint claim was rejected
Total volume3.8 mlNineteen pulses of 0.2 ml, the smallest step the device can serve
CalciumCitrate800 mg100% NRV

Needed for the maintenance of normal bones

Vitamin D3Cholecalciferol25 µg500% NRV

Maintenance of normal bones and normal absorption and utilisation of calcium and phosphorus

Vitamin K2Menaquinone-7 (MK-7 trans)75 µg100% NRV

Maintenance of normal bones

MagnesiumBisglycinate200 mg53% NRV

Maintenance of normal bones

Type II collagenUndenatured (UC-II)40 mg—

Joint support on a published trial. No EU claim has ever been submitted for it

ChondroitinSulfate800 mg—

Studied for knee osteoarthritis, mainly alongside glucosamine. Its EU joint claim was rejected

Total volume 3.8 ml 

Nineteen pulses of 0.2 ml, the smallest step the device can serve

No proprietary blends, no "complex" hiding the amounts, no bulking agents. If an ingredient is in the bottle it is in this table, with its form and its dose.

No proprietary blends, no bulking agents. If an ingredient is in the bottle it is in this table, with its form and its dose.

THE SCIENCE BEHIND IT

Four of these six have an authorised claim. Two do not.

In the EU, only a short list of health claims is authorised. Four of the ingredients here are on it for bones. The two joint ingredients are not: one never had a claim submitted, the other had one rejected. We would rather show you that than write a sentence that sounds the same for all six.

Calcium

AUTHORISED CLAIM

WHAT WE ARE ALLOWED TO SAY

“Calcium is needed for the maintenance of normal bones.”

Regulation (EU) 432/2012, which only allows it on a product that is at least a source of calcium. This formula carries 800 mg, 100% of the NRV. It comes as citrate, which does not need stomach acid to be absorbed. Two honest caveats: 800 mg sits well under the EFSA upper limit of 2,500 mg but above the 500 mg a day the German BfR recommends as a maximum from supplements, and our own calcium file advises against single doses over 500 mg. The library also flags this citrate for splitting across the day, so serving all 800 mg in one evening pour is pending clinical review.

Reg. 432/2012 · EFSA Journal 2009;7(9):1210 · NRV 800 mg · 12 sources on file

Vitamin D3

AUTHORISED CLAIM

WHAT WE ARE ALLOWED TO SAY

“Vitamin D contributes to the maintenance of normal bones.”

Regulation (EU) 432/2012, on a product that is at least a source of vitamin D. 25 µg is 500% of the NRV and a quarter of the 100 µg EFSA upper limit, though it is above the 20 µg the German BfR recommends as a maximum from supplements. It sits next to K2 and magnesium on purpose: our library pairs them whenever vitamin D goes into a plan.

Reg. 432/2012 · EFSA Journal 2009;7(9):1227 · UL 100 µg · 12 sources on file

Vitamin K2

AUTHORISED CLAIM

WHAT WE ARE ALLOWED TO SAY

“Vitamin K contributes to the maintenance of normal bones.”

Regulation (EU) 432/2012. 75 µg is 100% of the NRV. Its other authorised claim, “Vitamin K contributes to normal blood clotting”, points at the mechanism: vitamin K is the cofactor that warfarin and acenocoumarol block, so supplementing it antagonises those drugs and moves the INR. That antagonism, recorded in our interaction file, is why this formula is ruled out for anyone on a vitamin K antagonist.

Reg. 432/2012 · EFSA Journal 2009;7(9):1228 · no EFSA upper limit · 8 sources on file

Magnesium

AUTHORISED CLAIM

WHAT WE ARE ALLOWED TO SAY

“Magnesium contributes to the maintenance of normal bones.”

Regulation (EU) 432/2012, on a product that is at least a source of magnesium. 200 mg is 53% of the NRV and stays under the 250 mg upper limit for supplemental magnesium. Our library documents it as a partner of vitamin D, which is why the two travel together.

Reg. 432/2012 · NRV 375 mg · UL 250 mg · 14 sources on file

Type II collagen

NO AUTHORISED CLAIM

WHAT WE ARE ALLOWED TO SAY

Nothing. No claim has ever been submitted for it, so we do not attribute an effect to it.

It is here because of a randomised knee trial on file that used the same 40 mg a day, in the same undenatured form. That is a reason to include it, not a permission to promise anything. It comes from chicken cartilage.

1 source on file · 1 randomised trial · no claim submitted

Chondroitin

NO AUTHORISED CLAIM

WHAT WE ARE ALLOWED TO SAY

Nothing. EFSA assessed a joint claim for it and rejected it.

EFSA found that the animal and lab evidence did not predict an effect on normal human joints. It stays in on the knee trial on file, which tested it partly alongside glucosamine, an ingredient this formula does not carry. 800 mg is the lower end of the 800–1,200 mg used where it is sold as a medicine.

EFSA Journal 2009;7(9):1262 · 2 sources on file · 1 with a PMID · claim rejected

HOW IT IS POURED

Nineteen pulses. Not always nineteen.

The full dose of this formula is 3.8 ml, which the device serves as nineteen pulses of 0.2 ml. On a night when your data does not call for the whole thing, it pours less and tells you why. A pressed pill has one setting. This has nineteen.

TONIGHT'S POUR

12345678910111213141516171819
2.8 ml of 3.8 mlyour vitamin D came back in range

NIGHT, WITH DINNER

Why then

The calcium is kept to the evening so it stays away from iron, which VION serves in the morning. Taken together, calcium can cut the iron you absorb by around half.

WITH YOUR DINNER

Why with food

Vitamin D3 and K2 dissolve in fat, so a meal with some fat in it helps you absorb them. Some VION formulas stay away from your meal. This one rides on your dinner on purpose.

45 ML CARTRIDGE

How long it lasts

At the full 3.8 ml it is 11 nights. At a partial pour it lasts longer, so the app orders your refill from what you actually took.

HOW IT ENTERS YOUR PLAN

A CORE formula is not suggested. It is assigned.

CORE is the part of your plan that stays still on purpose. It comes out of your questionnaire, not out of last night's data, and it is held long enough for a change to actually mean something. For bones, that means months, not weeks.

  1. 01

    It comes from your questionnaire

    Choosing anti-ageing and longevity as one of your goals puts this formula in the running for your base. Your answers on health conditions and regular medication decide whether it can go in at all. No wearable data is needed for that first decision.

  2. 02

    It is held for at least 21 days

    Long enough for a change to be a signal rather than noise. Nothing about this formula moves inside that window. The reference course in our library is 24 weeks, a VION clinical choice still under review rather than a figure from a regulator; the bone claims themselves describe long-term use, not a short burst. The same internal consensus adds a 28-day pause and a cap of two courses a year, while another line of the same file calls this formula continuous use. We have not resolved that contradiction yet, and we would rather say so.

  3. 03

    Only the amount moves, night by night

    Once it is in, the engine adjusts how much of the 3.8 ml you get, in 0.2 ml steps. The recipe itself does not change.

  4. 04

    It is checked against your blood work

    Our clinical reference is a vitamin D test every six months and a bone density scan every two years. That schedule is a VION clinical decision, not a figure carried by a regulator or a study on file. If your blood calcium comes back high, or you start a vitamin K antagonist such as warfarin, this cartridge comes out. You are told before it happens.

SAFETY AND INTERACTIONS

What it never shares a night with.

Every pair of ingredients in our library is checked against the others before a plan is built. This is what that check rules out for this formula.

COUNTED TOGETHER

Every other magnesium formula

Nine other VION formulas carry magnesium, from 100 to 200 mg, Sleep & circadian rhythm among them. Any one of them on the same day as this one would pass the 250 mg upper limit for supplemental magnesium, so the engine will not add it. The same count runs for vitamin D3 against its 100 µg limit.

SPLIT ACROSS WINDOWS

Iron

The iron formula is served in the morning, before food. This one keeps its 800 mg of calcium to the evening, so the two never meet in the same pour. That separation comes from our timing rules for each formula rather than from a documented pair in the interaction table, where calcium and iron are not yet listed. The reason is in the calcium file: in the same meal, calcium can cut the iron you absorb by around half.

TALK TO A DOCTOR FIRST

Not for everyone

Ruled out if you have high blood calcium, hyperparathyroidism or sarcoidosis; if you have advanced chronic kidney disease (stages 3–5) or active kidney stones, which block the calcium and vitamin D pairing and rule out the magnesium as well; or if you take a vitamin K antagonist such as warfarin or acenocoumarol, have an active clotting disorder (thrombophilia) or a mechanical heart valve. Magnesium is also contraindicated at high doses in myasthenia gravis. Ask a doctor first if you have lymphoma or a granulomatous disease such as tuberculosis, both of which our vitamin D file treats as relative contraindications because they can push blood calcium up; if you have a history of calcium oxalate kidney stones or a milder kidney problem, liver disease, a heart rhythm problem or high-grade heart block, or histamine intolerance; if you are being treated for cancer, since our sources ask for supervision on high-dose vitamin D and on magnesium alongside chemotherapy; if you are pregnant or breastfeeding; or if you have surgery planned, in which case the chondroitin is stopped two weeks before. The documented drug pairs come with an action, not just a warning: bisphosphonates, take the bisphosphonate fasting, wait at least 30 minutes, and keep the calcium and magnesium at least 2 hours away; levothyroxine, 4 hours apart; quinolone antibiotics, at least 2 hours before or 6 hours after the calcium, and 2 hours before or 4 to 6 hours after the magnesium; tetracyclines, at least 2 hours from both the calcium and the magnesium; digoxin, levels monitored, high-dose calcium avoided and low blood magnesium corrected before the drug is started; acid reducers (PPIs), blood magnesium monitored beyond three months of use, and the calcium served as citrate, which does not depend on stomach acid; apixaban, keep your vitamin K intake steady and ask cardiology before high doses. The pair table does not hold every drug our ingredient files list, so here is the rest of what they carry, with the rating each file gives it. Rated major: anticonvulsants such as phenytoin, phenobarbital or carbamazepine, and digoxin, both in our vitamin D file; thiazide diuretics, major in our vitamin D file and moderate in our calcium file; integrase inhibitors such as dolutegravir, 2 hours before or 6 hours after the calcium; cisplatin and muscle relaxants, both in our magnesium file. Rated moderate: systemic corticosteroids, in both the calcium and the vitamin D file; orlistat, in the vitamin D and the K2 file; statins, in the vitamin D file; bile acid sequestrants such as cholestyramine or colestipol, and long courses of antibiotics such as cephalosporins or ampicillin, both in the K2 file; lithium, in the calcium file; loop and potassium-sparing diuretics, aminoglycosides, amphotericin B and calcium-channel blockers, all in the magnesium file. None of them is in the pair table yet, so ask a doctor about any you take. Antiplatelet drugs carry the same label warning as the anticoagulants. Contains chicken protein, animal cartilage (bovine, porcine or marine) and soy-derived vitamin K2, as the MK-7 is usually fermented on soy: not for bird, egg, shellfish or soy allergies, and not vegan or vegetarian. Do not exceed the daily dose, keep out of reach of young children, and do not use it in place of a varied, balanced diet. The app asks before it ever assigns this one.

WHERE THIS COMES FROM

Regulation (EU) 432/2012 on permitted health claims · Regulation (EU) 1169/2011 on nutrient reference values · EFSA tolerable upper intake levels for calcium, vitamin D and supplemental magnesium · BfR supplement maxima for calcium and vitamin D · EFSA Journal 2009;7(9):1262 on chondroitin and joint maintenance. Every ingredient fact on this page is tied to one of the 810 sources on file, and 443 of the 9,730 possible ingredient pairs in our library are documented so far. The course length and the monitoring schedule are VION clinical decisions, and we say so where they appear.

WHERE IT COMES FROM

You can check every line of this page.

Seven sources hold up this formula: the regulation that lets us make the bone claims, the one that sets the reference values we measure against, the EFSA upper limits we stay under, the stricter German maxima two of our doses go above, the EFSA opinion that rejected the chondroitin claim, and the two trials behind the joint ingredients.

REGULATIONRegulation (EU) 432/2012 — list of permitted health claims made on foodsbone claims for calcium, vitamin D, vitamin K and magnesium
NRVRegulation (EU) 1169/2011, Annex XIII Part A — nutrient reference valuesthe 100%, 500%, 100% and 53% above
EFSA ULTolerable upper intake levels — calcium 2,500 mg, vitamin D 100 µg (EFSA Journal 2023, 10.2903/j.efsa.2023.8145), supplemental magnesium 250 mg per daywe serve 800 mg, 25 µg and 200 mg
BfRBfR-Wissenschaft 03/2018 — maximum amounts proposed for vitamins and minerals in food supplements (Germany)500 mg calcium and 20 µg vitamin D: our 800 mg and 25 µg are above both
EFSAEFSA Journal 2009;7(9):1262 — scientific opinion on chondroitin sulfate and joint maintenanceclaim rejected
TRIALLugo, Saiyed, Lane. Nutrition Journal 2016 — undenatured type II collagen and knee osteoarthritis symptoms, randomised, double-blind, placebo-controlled40 mg a day, the dose in this formula
TRIALClegg et al. N Engl J Med 2006 — glucosamine, chondroitin sulfate and the two in combination for painful knee osteoarthritis (GAIT trial)PMID 16495392

Reviewed by VION nutrition team · last reviewed 16 September 2026

WHAT IS NOT PROVEN YET

This formula has not completed clinical validation. Its six ingredients rest on published work and, in four cases, on an authorised EU claim, but the combination itself has not been tested by us in a trial. When it is, the result goes on this page, whatever it says.

YOU DO NOT PICK YOUR FORMULAS

Your data does.

The questionnaire and your first weeks of data decide which six of the 29 end up in your device. This page exists so you can read what one of them is before that happens.

Food supplement. Does not replace a varied diet or a healthy lifestyle. VION does not diagnose or treat any condition. Nothing here replaces a healthcare professional.

Food supplement. Does not replace a varied diet or a healthy lifestyle. VION does not diagnose or treat any condition.