Latest evidence update: 2017-02-28
Strongest in Study quality (70). Held back by Recency (21).
Solid mix of RCTs with some methodological gaps.
Good cross-study replication, some imprecision.
Thousands of participants across the literature.
Mostly aligned, with some divergence.
Mostly pre-2020 research; updates may be needed.
No per-outcome numbers yet for this one. Each finding's direction and strength is shown in the research below.
Areas where research points to a consistent direction of effect. The strength of evidence is graded; the size of the effect is not quantified.
Vitamin K1 improves anticoagulation stability, increasing time in the therapeutic INR range for people on vitamin K antagonists.
Intravenous vitamin K1 slows the progression of coronary artery calcification in hemodialysis patients.
Vitamin K1 may lower post-meal insulin levels.
Vitamin K1 shows little effect on bone mineral density.
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