Sports Research Vitamin D3 + K2
by Sports Research
"5000 IU D3 + 100mcg K2 MK-7 in coconut oil — the synergistic duo that directs calcium to bones instead of arteries"
Overview
Sports Research Vitamin D3 + K2 provides 5000 IU vitamin D3 with 100mcg vitamin K2 (as MK-7) in a coconut oil veggie softgel. The D3+K2 combination is increasingly recognized as essential: D3 increases calcium absorption, while K2 activates osteocalcin (which deposits calcium in bones) and matrix GLA protein (which prevents calcium from depositing in arteries). Without K2, high-dose D3 supplementation may increase the risk of arterial calcification. The MK-7 form has a 72-hour half-life, ensuring sustained activity.
Key Ingredients
| Ingredient | Amount |
|---|---|
| Vitamin D3 | 5000 IU (125 mcg) |
| Vitamin K2 (MK-7) | 100 mcg |
| Coconut Oil (for absorption) | Included |
Pros & Cons
What We Like
- D3 + K2 synergy
- 22,000+ reviews
- Coconut oil for absorption
- Veggie softgel
- MK-7 (long half-life)
What Could Be Better
- 60 softgels (2-month supply)
- Premium over D3 alone
- Not for those on blood thinners (K2)
- 5000 IU may be high for some
Who Is This For?
Best For
- D3 + K2 supplementation
- Bone health optimization
- Arterial calcification prevention
- Those wanting synergistic combo
Not Ideal For
- Those on warfarin/blood thinners
- Those wanting D3 only
- Budget seekers
- Those wanting year supply
Our Verdict
Sports Research D3+K2 is the synergistic bone duo — 5000 IU D3 with 100mcg K2 MK-7 to direct calcium to bones, not arteries. The essential combination for anyone taking high-dose vitamin D.
Alternatives to Consider
No direct alternatives listed for this product yet.