Life Extension Super K Complex (90 Softgels)
by Life Extension
"K1 + K2 MK-4 + K2 MK-7 in one softgel — the comprehensive vitamin K complex for bone and cardiovascular health with 8,800+ reviews"
Overview
Life Extension Super K Complex provides all three forms of vitamin K in a single softgel: K1 (phylloquinone, 1500mcg), K2 as MK-4 (menaquinone-4, 1000mcg), and K2 as MK-7 (menaquinone-7, 100mcg). Each form serves distinct functions: K1 primarily supports blood coagulation, MK-4 is the tissue-specific form found in brain, kidneys, and pancreas, and MK-7 has the longest half-life (72 hours) for sustained activation of osteocalcin (bone mineralization) and matrix GLA protein (arterial calcium prevention). The combination ensures comprehensive vitamin K coverage for both bone and cardiovascular health.
Key Ingredients
| Ingredient | Amount |
|---|---|
| Vitamin K1 (Phylloquinone) | 1500 mcg |
| Vitamin K2 (MK-4) | 1000 mcg |
| Vitamin K2 (MK-7) | 100 mcg |
3 ingredients linked to detailed encyclopedia profiles
Pros & Cons
What We Like
- All 3 vitamin K forms
- 90 softgels (3-month supply)
- 8,800+ reviews
- 100mcg MK-7
- Comprehensive K coverage
What Could Be Better
- Premium over single-form K
- Contraindicated with warfarin
- No vitamin D included
- Large softgel
Who Is This For?
Best For
- Comprehensive vitamin K
- Bone mineralization
- Arterial calcium prevention
- Those taking vitamin D (need K2)
Not Ideal For
- Those on warfarin/blood thinners
- Those wanting K2 only
- Those wanting D3+K2 combo
- Budget vitamin K seekers
Our Verdict
Life Extension Super K Complex is the comprehensive vitamin K — all three forms (K1, MK-4, MK-7) in one softgel for complete bone and cardiovascular support. Essential companion to vitamin D3 supplementation.
Alternatives to Consider
No direct alternatives listed for this product yet.