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For much of the year the sun is too weak to make the vitamin D your immune system, mood and bones rely on.
£30
For much of the year the sun is too weak to make the vitamin D your immune system, mood and bones rely on.
For much of the year the sun is too weak to make the vitamin D your immune system, mood and bones rely on. Indoor days and northern latitudes make a daily top-up one of the most reliable habits you can keep, quietly holding up your defences through the darker, harder months when everything else feels like more effort.
If you feel wired or restless, take less, or take a break.
Thorne pairs D3 with vitamin K2, and that pairing is the whole point. D3 raises how much calcium you absorb; K2 then directs that calcium into bone and away from arteries and soft tissue, so the two behave as a system rather than one working without the other. It is the difference between supplementing and supplementing properly.
This is a clean, fat-soluble formulation from a brand clinicians and professional teams both trust, made without unnecessary fillers and dosed for everyday use. The liquid drops absorb easily and take seconds, so there is nothing to talk yourself out of.
A true foundation for immune defence, steady mood and long-term bone strength, and an easy companion to omega-3 and magnesium in a complete daily base.
Standard UK delivery included on every order, 1 to 3 working days after dispatch.
Next working day for £25 when you order by 12pm. Orders placed before 12pm on a working day leave the same day. Later orders leave the next working day.
You can return unopened and unused items within 30 days of delivery. This does not affect your statutory rights. Read the delivery and returns terms
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For much of the year the sun is too weak to make the vitamin D your immune system, mood and bones rely on. Indoor days and northern latitudes make a daily top-up one of the most reliable habits you can keep, quietly holding up your defences through the darker, harder months when everything else feels like more effort. Thorne pairs D3 with vitamin K2, and that pairing is the whole point. D3 raises how much calcium you absorb; K2 then directs that calcium into bone and away from arteries and soft tissue, so the two behave as a system rather than one working without the other. It is the difference between supplementing and supplementing properly.
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Sign inD3 on its own raises calcium absorption; pairing it with K2 directs that calcium into bone rather than soft tissue. Thorne formulate both together, cleanly and at a sensible daily dose, which is how it should be taken.
Supports immune defence, steady mood and long-term bone strength through the darker months when sunlight can't do the job.
One serving daily with a meal containing fat. Take in the morning, vitamin D can be subtly stimulating. Consider a higher dose in winter if your levels run low.
Worth taking for most people living north of the Mediterranean, particularly through autumn and winter, or if you spend your days indoors. If you already supplement calcium or take anticoagulants, mention the K2 to your clinician.
Standard UK delivery included on every order, 1 to 3 working days after dispatch. Next working day for £25 when you order by 12pm.
You can return unopened and unused items within 30 days of delivery. This does not affect your statutory rights. You can cancel an order for any reason within 14 days of delivery, under the Consumer Contracts Regulations. Health products that arrive sealed cannot be returned once opened, for hygiene reasons. If an item is faulty, the Consumer Rights Act gives you a repair, a replacement or a refund.
Overall
6 months ago
Take one with breakfast every day — been doing this for about three months. Had a blood test before starting and another recently, levels have come up nicely. Didn't expect to notice much but I do feel less sluggish in the afternoons, which was my main gripe through winter.
6 months ago
Picked this up after getting my blood test back showing I was deficient. First thing I noticed was how small the capsules are — easy to swallow, no unpleasant aftertaste. Two weeks in and it's too early to claim much, but I feel good about the D3+K2 combo. The fact the K2 is included takes one thing off my mind.
6 months ago
GP flagged low vitamin D last autumn. Wanted something that paired D3 with K2 rather than just a standalone D. This does exactly that and fits neatly into my existing stack — magnesium in the evening, this in the morning. Straightforward and seems to be working.
6 months ago
6 months ago
Swapped from a cheaper supermarket brand after reading more about the D3/K2 pairing. This one feels more considered. Two months in and my energy on dark winter mornings is noticeably better. Will keep buying.
7 months ago
Was on plain vitamin D for years and kept reading about K2 being important alongside it. Decided to just get a combined capsule and this one came up consistently in recommendations. The capsules are unfussy — no smell, no taste, just done. Taking it with breakfast most mornings. Happy with the switch.
Biomarker check, £350MaryleboneSee your vitamin D, iron and B12.At our clinic in Marylebone, London, doctors also offer private blood tests and longevity medicine.
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