4000IU Vitamin D3 + K2
This formulation ensures optimal calcium absorption while promoting strong bones and a healthy heart.
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This supplement is designed to support bone health, immune function, and cardiovascular health, featuring 4000 IU of Vitamin D3 sourced from marine algae and 100mcg of Vitamin K2. This formulation ensures optimal calcium absorption while promoting strong bones and a healthy heart. Suitable for vegans, this product is ideal for athletes looking to maintain peak performance.
STRONGER BONES, FEWER SESSIONS MISSED.
More daylight, deeper into the winter.
Your baseline, held through the dark months. 4000IU of vegan D3 from marine algae, plus 100mcg of K2 (MK-7) — one capsule a day from the clocks going back to the clocks going forward. Levels don't spike, they hold.
One capsule. That's the whole routine.
No powders, no scoops, no taste. One capsule with breakfast — D3 and K2 are fat-soluble, so food is all the help they need. 60 servings a jar, two months of not thinking about it.
The calcium you absorb, where it belongs.
Taken daily across 4–12 weeks it supports bone strength, immune function and muscle function — the things you only notice once they're gone.
Only what you need, nothing you don't
Vitamin D3
Vitamin D3 sourced from marine algae, supports immune function, bone health, and recovery from intense exercise.
Vitamin K2 (MK-7)
Vitamin K2 works synergistically with Vitamin D3 to ensure calcium is deposited into bones, reducing the risk of arterial calcification.
Immune Function
Supports immune health by enhancing immune response and promoting proper calcium balance.
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Why do I need vitamin D3?
Vitamin D3 supports bone strength, immune defence, muscle function and mood — yet most of us run low, especially through the darker months when sunlight is scarce
How does it work?
Vitamin D3 helps your body absorb calcium, while the added K2 directs that calcium into your bones and away from your arteries - keeping your skeleton strong and your heart healthy.
When do I take it?
Daily with water, ideally in the morning alongside food. Both D3 and K2 are fat-soluble, so they absorb best with a meal.
Why Puresport?
Many vitamin D products use low doses or skip K2 entirely. Ours pairs 4000IU of vegan, marine-algae D3 with 100mcg of K2 (MK-7) in one Informed Sport certified capsule — so the calcium you absorb actually ends up where it should.
Backed by Experts
Vitamin D is one of the supplements I think many athletes should take seriously, especially through winter or during periods of limited sun exposure. It contributes to normal immune function, muscle function and bone health, and Puresport’s D3 + K2 provides a high-strength, plant-based option for keeping intake consistent.