“Vitamin K (Phylloquinone)?”Here!Vitamin K1
Appears in 1 scanned product.
As a supplement
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
Phylloquinone is the plant-derived form of vitamin K, the form most concentrated in leafy greens and plant oils. It is a fat-soluble vitamin the body needs for a specific set of proteins.
Why it’s used
Taken to support normal blood clotting and, in some research, bone-related proteins.
What the evidence is for
supporting normal blood clotting.
What the evidence says
Per NIH ODS, vitamin K's role in activating clotting factors is well established, and frank deficiency causes abnormal bleeding. Evidence for effects on bone density or cardiovascular outcomes beyond basic clotting function is less settled.
Dose studied
90–120 mcg — Adequate Intake for adults, per NIH ODS.
Context
NIH ODS sets an Adequate Intake rather than an RDA for vitamin K, reflecting less certainty about exact requirements than for some other vitamins.
Rumors
Supporting normal blood clotting.
Supports — establishedhealth and safety evidence
Measured as a biomarker.
- Vitamin K - Health Professional Fact Sheet (Regulatory) · Funding not checked
How much is a reference amount
- 90 mcg a dayfor adults 19 and over, women · Adequate Intake
No upper limit has been set — the data was not sufficient to set one, which is a gap in the research rather than a finding about safety.
- 120 mcg a dayfor adults 19 and over, men · Adequate Intake
No upper limit has been set — the data was not sufficient to set one, which is a gap in the research rather than a finding about safety.
An AI, set on phylloquinone (K1) intakes. It is applied to the menaquinone rows because it is the vitamin K AI and panels declare them as vitamin K; the FNB did not set separate values per form. No UL.
Every applicable line is shown because we don’t know which one is yours, and a reference intake is a target for a population, not a threshold for harm.