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 bone-support blend that goes beyond calcium alone, pairing three calcium sources — including lithothamnion, a mineralized red seaweed — with vitamin D, magnesium, vitamin C, vitamin K2 (as menaquinone), and boron. It delivers roughly 500 mg of calcium and 400 IU of vitamin D per daily dose. The design reflects that bone is living tissue built from a collagen framework hardened with minerals, needing several cofactors working together.
Why the evidence supports it
The evidence base for bone is strongest not for calcium in isolation but for calcium working alongside its cofactors: combined calcium-and-vitamin-D research is tied to healthier bone maintenance, vitamin D governs how well calcium is absorbed, and studies comparing vitamin K2 to K1 favor K2 for directing calcium into bone. Magnesium and boron round out the mineral cast that bone-building cells actually draw on. That full-cast approach is the evidence-based way to support the cell's Build function in bone — supplying the minerals and cofactor vitamins used to construct and maintain the tissue — alongside weight-bearing movement and a mineral-rich diet. And bone is not inert scaffolding: it is living tissue that houses the marrow where immune cells are made, so bone health and immune health are quietly linked — the zinc and copper immune tissue leans on (in Zinc + Copper and the oyster whole-food Desiccated Oyster) support both at once.
What it supports
- Supports healthy, strong bones
- Provides calcium alongside the vitamin D and K2 that direct it
- Supports normal mineral balance
- Complements weight-bearing movement and a mineral-rich diet
Which function it supports
Ties to the cell's Build function — supplying the minerals and cofactor vitamins bone-building cells use to construct and maintain bone 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 (6 profiled ingredients). Structure and function only — not a treatment claim.
The science on the ingredients
Calcium vitamin D or combined supplementation to prevent fractures and fallsEstablishedMeta-analysis2026
No broad favorable fracture or fall effect -- Little to no effect on most fracture and fall outcomes
Not captured in abstract review — BMJ
NIH calcium professional fact sheetSystematic review2024
Summarizes calcium requirements, food sources, and deficiency/toxicity reference points.
NIH Office of Dietary Supplements — NIH ODS fact sheet
Photobiomodulation Therapy on Brain: Pioneering an Innovative Approach to Revolutionize Cognitive Dynamics.Clinical trial2024
Review explains photobiomodulation therapy on the brain activates mitochondrial cytochrome c oxidase to boost ATP synthesis and triggers calcium-channel signaling that activates gene transcription.
Nairuz T; Sangwoo-Cho; Lee JH — Cells
Low-Intensity Pulsed Ultrasound in Peripheral and Central Nerve Repair: Mechanisms and Emerging Therapeutic Strategies.Expert review2026
Low-intensity pulsed ultrasound modulates calcium signaling, cytoskeletal remodeling, neurotrophic factor expression, and myelination to support functional recovery in peripheral and central nerve injury models.
Ma C; Song S; Dai J; Shen H — Journal of functional biomaterials
Secondary Hyperparathyroidism.Expert review2024
This review describes secondary hyperparathyroidism as a physiologic response to chronic conditions like kidney disease, worsened by reduced sun exposure and vitamin D and calcium deficiency from modern indoor lifestyles.
Stack BC — Otolaryngologic clinics of North America
Iron Metabolism, Calcium, Magnesium and Trace Elements: A ReviewExpert review2024
Iron, calcium, magnesium, and trace elements interact in shared absorption pathways in the gut, so the intake and status of one can influence uptake of another.
Rolić T, Yazdani M, Mandić S, Distante S — Biological Trace Element Research
Chemical Analysis of Native Himalayan Shilajit: An Evaluation of an Ayurvedic FormulationEmergingTechnology-validation study2025
Multi-technique elemental and organic-compound analysis of a specific native Himalayan shilajit sample found potassium, calcium, and magnesium as predominant elements, source-specific to that sample.
Study authors — ACS Omega
Malvidin-3-glucoside induces insulin secretion by activating the PLC/IP<sub>3</sub> pathway and enhancing Ca<sup>2+</sup> influx in INS-1 pancreatic β-cellsEmerging2025
In INS-1 beta-cells, malvidin-3-glucoside enhanced insulin secretion via the PLC/IP3 pathway and calcium influx without reducing cell viability.
Channuwong P; Yuan Y; Yao S; Bauermann FV; Cheng H; Suantawee T; Adisakwattana S — Scientific reports
Mitochondrial calcium homeostasis and atrial fibrillation: Mechanisms and therapeutic strategies review.2025
Review links atrial fibrillation to mitochondrial calcium imbalance, explaining that calcium normally regulates energy-producing enzymes, the electron transport chain, and antioxidant enzyme activity within heart cells.
Chang Y; Zou Q — Current problems in cardiology
MCU regulating bone remodeling and osteogenic function through mitochondrial calcium homeostasis and oxidative stress alteration.2025
The mitochondrial calcium uniporter (MCU), which shuttles calcium into mitochondria, was shown to influence bone remodeling and osteogenic cell function through calcium homeostasis and oxidative stress regulation.
Li C; Sun J; Ling H; Qin Z; Zhu X; Fu X; Li T; Gan X — Free radical biology & medicine
Inhibitory Role of L-theanine, a Structural Analogue of Glutamate, against GluR5 Kainate Receptor and its Prospective Utility against Excitotoxicity.EmergingPreclinical study2024
A preclinical study on L-theanine found that overactivation of receptors that respond to excitatory neurotransmitters can result in various harmful outcomes, such as the inability to properly modulate calcium levels, generation of free radicals, initiation of the mitochondrial permeability transition.
Deb S; Borah A — Central nervous system agents in medicinal chemistry
Ultrasound-triggered piezoelectric polyetheretherketone with boosted osteogenesis via regulating Akt/GSK3β/β-catenin pathway.Animal study2024
A piezoelectric ultrasound-responsive implant enhanced bone-forming cell differentiation via Piezo1-calcium signaling and improved healing of maxillofacial bone defects in rats under ultrasound stimulation.
Li Y; Fan Y; Zhao S; Cheng B — Journal of nanobiotechnology
L-Type Calcium Channel Modulates Low-Intensity Pulsed Ultrasound-Induced Excitation in Cultured Hippocampal Neurons.Animal study2024
In cultured hippocampal neurons, low-intensity pulsed ultrasound increased spontaneous electrical activity and calcium influx through L-type calcium channels, activating CaMKII-CREB signaling after stimulation ended.
Fan WY; Chen YM; Wang YF; Wang YQ; Hu JQ; Tang WX; Feng Y; Cheng Q; Xue L — Neuroscience bulletin
Nonthermal radiofrequency radiation promotes hematopoietic stem and progenitor cells function by regulating Ca2+ efflux.Cell-culture study2026
Non-thermal 2856 MHz radiofrequency exposure increased membrane fluidity in blood stem cells, activating calcium pump activity and calcium efflux that shifted cells into a low-metabolism state and improved function.
Lv Z; Zhao K; Li J; Li S; Zhao X; Xu A; Wu Y; Gao H; Li J; Sun H; Xue Y; Li S; Xiang S; Yang X; Li C — Stem cell research & therapy
Harnessing Sunlight Safely for Newborn Care: Balancing Risks and Benefits in Resource-Limited Settings.Clinical trial2026
Review discusses balancing controlled early-morning sunlight exposure, traditionally used to help prevent vitamin D deficiency and manage neonatal jaundice, against UV radiation risks for newborns in resource-limited settings.
Olusanya BO; Boo NY — Tropical medicine & international health : TM & IH
Vitamin D supplementation and its impact on leptin and interleukin-6 in women following religious intermittent fasting: a controlled study.Clinical trial2025
In women practicing religious intermittent fasting, 16 weeks of vitamin D supplementation corrected serum vitamin D deficiency but did not significantly change leptin or interleukin-6 levels.
Karras SN; Michalakis K; Kypraiou M; Al Anouti F; Fakhoury H; Annweiler C; Pilz S; Anemoulis M; Vlastos A; Haitoglou C; Riedmann U; Georgopoulos N; Papanikolaou EG; Tzimagiorgis G — Frontiers in endocrinology
A pilot clinical trial to explore the effects of UV exposure on vitamin D synthesis and inflammatory responses in vitamin D-deficient adultsClinical trial2025
Brief, standardized UV skin exposures raised vitamin D blood levels in deficient adults without triggering inflammatory harm in this small trial.
Study authors — Scientific Reports
Effects of Vitamin D Supplementation and Baseline Vitamin D Status on Acute Respiratory Infections and Cathelicidin: A Randomized Controlled TrialRandomized controlled trial2024
A randomized trial linked vitamin D supplementation to changes in cathelicidin, an antimicrobial protein the body uses in innate immune defense.
Study authors — Open Forum Infectious Diseases
Comparative Study of Healthy Older and Younger Adults Shows They Have the Same Skin Concentration of Vitamin D3 Precursor, 7-Dehydrocholesterol, and Similar Response to UVRClinical trial2024
Contrary to older assumptions, healthy older adults made vitamin D from UV exposure about as well as younger adults in this comparative study.
Study authors — PubMed Central (PMC)
Molecular pathways and biological roles of melatonin and vitamin D; effects on immune system and oxidative stress.Expert review2024
This review describes how vitamin D synthesis via UVB skin exposure and melatonin synthesis in darkness are inversely linked, with both molecules playing roles in immune function and antioxidant activity.
Yousefi T; Yousef Memar M; Ahmadi Jazi A; Zand S; Reiter RJ; Amirkhanlou S; Mostafa Mir S — International immunopharmacology
The Global Prevalence of Vitamin D Deficiency in the Elderly: A Meta-analysisExpert review2024
This meta-analysis found vitamin D deficiency (below 20ng/mL) present in roughly 60% of elderly populations studied.
Meshkin A, Badie F, Salari N, Pashazadeh F, Shohaimi S, Karamyar S — Indian Journal of Orthopaedics
Vitamin D3 as an immunomodulatory agent: molecular mechanisms, clinical translation, and precision therapeutic strategies.2026
Review describes vitamin D3 regulating immune homeostasis via VDR signaling, inhibiting NF-kB and NLRP3 inflammasome pathways while activating Nrf2 antioxidant defenses, with effects varying by individual 25(OH)D levels and VDR gene polymorphisms.
Liu Q; Li Z; Li S; Li Y; Pan H; Tao Y — Frontiers in immunology
Vitamin D and Fracture Healing.2026
A review found that vitamin D supports calcium and phosphate absorption for bone health and fracture healing by regulating immune response, inflammation, and mineralization, with deficiency linked to osteoporosis, osteomalacia, and rickets.
Zaman MS; Ullah MI — Advances in experimental medicine and biology
High-dose vs standard-dose vitamin D and sleep in early childhood: A randomized clinical trial.2026
Randomized trial found high-dose versus standard-dose vitamin D3 supplementation showed no benefit for child sleep up to 24 months, though children with higher 25(OH)D levels at 12 months had fewer sleep disturbances at 24 months.
Seppälä V; Holmlund-Suila E; Hauta-Alus H; Sandboge S; Kajantie E; Rosendahl J; Enlund-Cerullo M; Valkama S; Mäkitie O; Andersson S; Räikkönen K; Heinonen K — Sleep medicine
Balanced by design — we show supporting and contradicting findings. Search all studies
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. Bone Formula 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 Bone Formula pairs with for each. Nothing works in isolation; these share the same systems.
For Bone & Cartilage
For Minerals
For Women's Health
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 the labeled daily servings (the current bottle governs; older materials list up to six capsules daily) with meals and water, ideally split across the day for absorption.
Where to get it
We are lining up the best way to get this one to you. In the meantime, reach out and we will point you the right way — or browse the full shop to see every product.
See the full shopThe 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.
Bone Formula is a bone-support blend providing calcium from mineralized seaweed and other sources, with vitamin D, magnesium, vitamin C, vitamin K2, and boron. It is built around the fuller set of nutrients bones use, not calcium alone. It fits people who want bone support that respects how bone actually works.
Common questions
What does Bone Formula support?+
It supports healthy, strong bones, provides calcium alongside the vitamin D and K2 that direct it, supports normal mineral balance, and complements weight-bearing movement and a mineral-rich diet.
How do I take it?+
Take the labeled daily servings with meals and water, ideally split across the day for absorption. The current bottle governs the real dose.
What makes it different?+
It does not stop at calcium. Bone is living tissue that needs vitamin D, K2, magnesium, and boron working together, which is more sensible than a lone calcium pill.