Free Soul Pure Creatine Monohydrate Powder
Free Soul
Promising research
Puresport
Puresport 4000IU Vitamin D3 + K2
Strong research
£25typical price
Best for: Tested athletes, or people whose GP has suggested a higher dose for a set period
Buy now at Amazon- Informed Sport certified
- 4000 IU (100mcg) D3 + 100mcg K2
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Informed Sport certified
- K2
- 100mcg MK-7
- Dose
- 100mcg (4000 IU) D3 + 100mcg K2 (MK-7)
- Form
- Capsule
Where we checked it: puresport.co ›
Compare where to buy
We may earn a commission if you buy through our links. How we choose ›
Why we picked it
The only vitamin D we found with Informed Sport certification shown on the product page. It uses vegan D3 from algae plus 100mcg K2 (MK-7), as a two-month supply.
Best for
Tested athletes, or people whose GP has suggested a higher dose for a set period
Not for
Everyday use without medical advice: 4000 IU is the NHS maximum
The details that matter.
- • Informed Sport certified
- • 4000 IU (100mcg) D3 + 100mcg K2
- • At the NHS upper limit
- • Two-month supply
Specifications
- K2
- 100mcg MK-7
- Dose
- 100mcg (4000 IU) D3 + 100mcg K2 (MK-7)
- Form
- Capsule
- Pack
- 2-month supply
- Source
- Algae (vegan)
- Third party testing
- Informed Sport
Certifications
How strong is the research? What our grades mean ›
- Strong research
- Independent certification or lab data for the specific claim.
- Promising research
- The material is well supported, but there is no product-level testing.
- Early research
- Little independent research.
- Mixed research
- Research findings disagree.
- £
- Under £20
- ££
- £20 to £79
- £££
- £80+
Compare with similar
| Feature |  |  |  |  |
|---|---|---|---|---|
| Price | £25 typical | £7.55 | £21.95 typical | £31.85 typical |
| K2 | 100mcg MK-7 | None | 100mcg per 3 sprays | 45mcg MK-7 |
| Dose | 100mcg (4000 IU) D3 + 100mcg K2 (MK-7) | 10mcg (400 IU) | 100mcg (4000 IU) D3 + 100mcg K2 per 3 sprays | 25mcg D3 + 45mcg K2 (MK-7) |
| Research | Strong research | Promising research | Early research | Early research |
| Link | You're here | View › | View › | View › |
