Vitamin K2

Vitamins/Minerals · Evidence: Mixed · Importance: Low

Often paired with D3 for calcium metabolism support.

What the evidence says

Mixed evidence for clinical benefit beyond D3 alone.

Typical dose & timing

Dose: 90–200 mcg product-dependent.

Timing: With fat-containing meal.

Role in a stack

Optional D3 companion.

Redundancy check: Often included in D3+K2 combo products.

Cautions & safety

Avoid with warfarin/blood thinners unless medically cleared.

Use caution with anticoagulant medications.

Best for

users taking D3 wanting paired bone support

Source-verified products

Real products in this category, ordered by review count. Each price and rating comes from the product's own page, recorded 2026-07-29 — follow the link for current values. Links go to the product's source page and never affect this ranking.

• NOW Foods, MK-7 Vitamin K-2 , 100 mcg, 120 Veg Capsules
  NOW Foods · $20.79 · 4.8/5 (30834 ratings) · mid tier
• Doctor's Best, Natural Vitamin K2 MK-7, 100 mcg, 60 Veggie Caps
  Doctor's Best · $13.99 · 4.8/5 (19615 ratings) · budget tier
• Nutricost, Vitamin K2 MK-7, 100 mcg, 240 Softgels
  Nutricost · $17.95 · 4.8/5 (7406 ratings) · mid tier
• Life Extension, Low Dose Vitamin K2 (MK-7), 45 mcg, 90 Softgels
  Life Extension · $13.50 · 4.8/5 (6630 ratings) · budget tier
• Futurebiotics, Vitamin K2 as MK-7, 100 mcg, 100 Vegetarian Capsules
  Futurebiotics · $14.99 · 4.8/5 (3043 ratings) · budget tier
• Carlson, Vitamin K2, 45 mcg, 180 Soft Gels
  Carlson · $33.92 · 4.8/5 (2095 ratings) · premium tier
• Force Factor, MK-7 Vitamin K2, 100 mcg, 60 Vegetable Capsules
  Force Factor · $9.99 · 4.8/5 (1900 ratings) · budget tier
• 21st Century, Vitamin K2, 100 mcg, 110 Vegetarian Capsules
  21st Century · $15.99 · 4.8/5 (1568 ratings) · mid tier
• Micro Ingredients, Vitamin K2, MK-7, 200 mcg, 300 Softgels
  Micro Ingredients · $23.95 · 4.8/5 (1434 ratings) · premium tier
• Super Daily® K2
  Carlson · $29.90 · 4.9/5 (9 ratings) · premium tier
• Vitamin K2 as MK-4 5 mg
  Carlson · $24.90 · 4.9/5 (8 ratings) · premium tier
• Vitamin K2 as MK-7 45 mcg
  Carlson · $21.50 · 5/5 (6 ratings) · mid tier

References

• Vitamin K2 and the calcium paradox. Journal of Nutritional Science (2012)
  Evidence is mixed. K2 is theorized to direct calcium to bones rather than arteries, but clinical evidence for most outcomes is limited. Most relevant as a companion to high-dose D3.