Documented concern based on cited evidence — not a personalized safety check, not medical advice, and not a decision to combine or avoid. That decision belongs with your prescriber.
Documented concern — monitor and disclose
Clinically relevant documented concern. Disclose the supplement to your clinician and keep monitoring in place.
Mechanism and evidence
High-dose vitamin E has antiplatelet-type effects; higher serum vitamin E tracks with bleeding risk in patients on oral anticoagulants.
Evidence tier: cohort
The tier names the strongest cited study design. Some anchors studied the supplement on its own, or a related drug in the same class — in those pairs the grade rests on that evidence plus established pharmacology, as agreed with our medical reviewer.
What to discuss with your prescriber
- High-dose vitamin E on warfarin only after agreement with your prescriber.
- Report bruising or bleeding changes.