Foundational vitamins · Cardiovascular · Bone health

Vitamins & Essentials

Everything else works better when the foundations are in place. Vitamin D3 deficiency — near-universal at northern latitudes between October and March — compromises immune function, bone metabolism, mood and cellular repair. Omega-3 deficiency drives chronic inflammation. These are not optional extras. They are the biochemical foundation that every other supplement and protocol at Harmover builds on top of.

Practitioner-Supervised Physician-Directed D3 Loading Legally Imported Ships UK · EU · US · CA
60K IU
Harmova D3
therapeutic loading dose
200+
Genes regulated
by vitamin D3
1 in 6
Adults with severely
low vitamin D
Free
To register
No commitment

The Vitamin D3 Problem

Between October and April, northern latitudes receive insufficient UVB radiation for the skin to synthesise vitamin D3. Around 1 in 6 adults has severely low vitamin D. It is the single most correctable nutritional deficiency in the UK — affecting immune function, bone metabolism, mood, hormone regulation and cellular repair simultaneously.

Two D3 Formulations, Two Purposes

Harmover offers D3 in two formats. The Harmova 60,000 IU is a high-dose therapeutic capsule for rapid deficiency correction under physician direction — not for daily use. The Supliful 2,000 IU is the standard daily maintenance dose in an oil-based capsule for ongoing supplementation once levels are restored or maintained.

Calcium Needs Direction

Vitamin D3 increases calcium absorption — essential for bone health. But absorbed calcium needs to be directed into bones rather than arterial walls. Vitamin K2 (MK-7) activates the proteins that do this. The Bone & Heart Support formula combines D3, K2 and calcium precisely because taking them together is more effective — and safer — than calcium alone.

Vitamin D3
Cardiovascular & bone health
High-dose D3 — member access only
The Harmova D3 60,000 IU is a physician-directed therapeutic product. Access requires member registration and practitioner assessment. Dosing is determined by your Harmover physician based on your vitamin D status — it is not for daily supplementation.
Register to access →
The vitamin D problem

Why most people are deficient by winter

Vitamin D3 is synthesised in the skin when UVB radiation hits 7-dehydrocholesterol — a reaction that requires a solar elevation angle above 35°. Northern Europe sits between 50°–60° north latitude. Between October and April, the sun never gets high enough for this reaction to occur.

Immune
Function
Vitamin D3 directly regulates the innate and adaptive immune response — T-cell activation, macrophage function and antimicrobial peptide production. Deficiency significantly impairs the immune system's first-line response to infection.
Bone
Metabolism
D3 is essential for calcium and phosphate absorption from the gut. Without adequate D3, the body cannot maintain bone mineral density regardless of dietary calcium intake — leading to progressive bone loss and increased fracture risk.
Mood
& Mental Health
Vitamin D receptors are expressed throughout the brain. Deficiency is associated with increased risk of depression, seasonal affective disorder and cognitive decline. The correlation between winter D3 deficiency and seasonal mood changes is among the most consistent in nutritional psychiatry research.
200+
Genes Regulated
Vitamin D3 functions as a steroid hormone — binding to vitamin D receptors in cell nuclei and directly regulating the expression of over 200 genes involved in immune response, cellular repair, metabolic function and cardiovascular health.

Which D3 product is right for you? If you have established vitamin D deficiency confirmed by a blood test, the Harmova 60,000 IU therapeutic formulation may be appropriate for rapid correction under physician direction — register to discuss with your Harmover practitioner. For ongoing daily maintenance — particularly through winter — the Supliful D3 2,000 IU in an oil-based capsule is the standard recommendation.

Common questions

Questions about vitamins & essentials

What is the difference between the two Vitamin D3 products at Harmover?
Harmover offers two D3 formulations for different purposes. The Harmova D3 is a 60,000 IU high-dose therapeutic capsule — used for rapid deficiency correction under physician direction, not for daily supplementation. It is a member-only product requiring practitioner assessment. The Supliful Vitamin D3 2,000 IU is an oil-based daily maintenance capsule (120 caps) suitable for ongoing supplementation. Your Harmover practitioner will advise which is appropriate based on your vitamin D status and goals.
What is a 60,000 IU vitamin D3 dose for?
A 60,000 IU dose is a therapeutic loading formulation for rapidly correcting established vitamin D deficiency — not for daily supplementation. At this dose it would typically be taken weekly or monthly under physician direction. The Harmova D3 60,000 IU is a member-only product with dosing directed by a Harmover physician based on the individual's deficiency level. It should be taken with a meal containing dietary fats for optimal fat-soluble absorption.
What is the difference between EPA and DHA in omega-3?
EPA (eicosapentaenoic acid) is primarily anti-inflammatory — reducing circulating inflammatory markers, supporting cardiovascular function and mood regulation. DHA (docosahexaenoic acid) is primarily structural — a major component of brain cell membranes, the retina and the nervous system. Both are essential and neither is a substitute for the other. Harmover's Omega-3 provides EPA 180mg and DHA 120mg per capsule — a standard clinical ratio providing both in a single supplement.
How does Bone & Heart Support work?
Bone & Heart Support combines Vitamin K2 (MK-7), Vitamin D3 and calcium. The mechanism is calcium direction — D3 increases calcium absorption from food; K2 activates osteocalcin and matrix GLA protein, which direct calcium into bone mineral and prevent its deposition in arterial walls. Without K2, supplemental D3 and calcium can contribute to arterial calcification. Together they support bone density and cardiovascular health through one integrated mechanism.
Should I take vitamin D3 with vitamin K2?
Yes, ideally — especially at higher D3 doses. D3 increases calcium absorption; K2 (MK-7 form) ensures that calcium is directed into bone rather than soft tissue. If you are taking a standalone D3 product, adding K2 or choosing the Bone & Heart Support formula is the more complete approach. This is especially relevant when using the high-dose 60,000 IU therapeutic formulation, where your Harmover physician will advise on the appropriate accompanying protocol.
Ready to begin?

Get the foundations right.

Register free to access the full vitamins range — including the physician-directed D3 60,000 IU loading formulation — with guidance from a Harmover practitioner on the right protocol for your deficiency status.

Free to register · No commitment · Ships UK · EU · US · Canada

Reviewed by
Harmover Wellness Coach Team  ·  April 2026
References & sources
1 in 6 Public Health England — National Diet & Nutrition Survey, 2020. Vitamin D deficiency prevalence in adults at northern latitudes.
200+ genes Bouillon R. et al. — Endocrine Reviews, 2019. Vitamin D and human health: lessons from vitamin D receptor null mice.
Omega-3 Mozaffarian D. & Wu J.H.Y. — JACC, 2011. Omega-3 fatty acids and cardiovascular disease: effects and mechanisms.