
Omega-3
The single most evidence-backed supplement there is, in a clean, high-strength triglyceride oil that actually absorbs.

£30.00
Winter-proof immunity, mood and bone strength, with K2 to steer the calcium exactly where it belongs.
ThorneVitamin D + K2What are you hoping to improve?
Pick a goal and we’ll tell you, honestly, whether Vitamin D + K2 is the right fit, or what would suit you better.
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.

The single most evidence-backed supplement there is, in a clean, high-strength triglyceride oil that actually absorbs.

The gentle, highly absorbed form of the mineral behind calm, sleep and steady energy, that most people are short on.

The most researched supplement in sport, and increasingly in brain health, at the exact 5g dose the studies use.
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Set up Profile nowFor 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.
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.
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.
D3 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.
If you feel wired or restless, take less, or take a break.
The aim is steadiness, not stimulation.
A seasonal session on immunity, mood and the handful of habits that carry you through a northern winter in good health.
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Overall sentiment
4 days ago
Gentle on a sensitive stomach, and I feel like myself again. I had tried two other glandulars before this and neither sat right.
1 week ago
I was sceptical about glandulars, but my mid-afternoon crash has genuinely eased. One capsule with breakfast and I forget about it.
2 weeks ago
Not a stimulant, which is exactly what I wanted. It took about ten days, then I realised I wasn’t dreading the afternoon any more.
3 weeks ago
Bought after a blood panel flagged a flat cortisol curve. Easy to take, no jitters, and the sourcing is refreshingly transparent.
1 month ago
Training hard through a stressful stretch and this has helped me bounce back between sessions. Already on my second bottle.
1 month ago
No frills, one ingredient, a sensible dose. I appreciate that it is designed to be used for a season rather than forever.
A blood test is the only way to know what your body actually needs. We’ll tell you which of these supplements is right for you.
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