The short answer
High-dose vitamin E deserves a medication review before use with rivaroxaban. Vitamin E carries a general bleeding precaution with anticoagulants, but direct clinical evidence for this exact combination is limited. The available evidence does not establish a safe supplement dose or a specific increase in bleeding risk.
What this answer covers
Adult oral rivaroxaban with supplemental vitamin E. High-dose single-ingredient products, multivitamins and vitamin E naturally present in foods are distinct exposures.
- Supplement or preparation
- Vitamin E
- Medication ingredient
- rivaroxaban
Why might vitamin E matter?
Larger supplemental amounts of vitamin E can affect platelet function and vitamin K-dependent clotting processes. NIH therefore cautions about bleeding when vitamin E is used with anticoagulant or antiplatelet medicines. Rivaroxaban already changes clot formation through factor Xa inhibition. Together, these points justify checking high-dose supplement use, but they do not establish how much bleeding risk this exact combination adds for an individual person.
What does the research tell us?
Direct clinical evidence for vitamin E with rivaroxaban was not identified in the sources checked. A small randomized trial in 21 people taking warfarin found no significant change in INR with vitamin E. That result provides a useful counterpoint to a blanket warning, but it concerns a different anticoagulant. INR findings with warfarin neither measure rivaroxaban’s effect nor establish the absence of bleeding with this pair.
Is there a safe dose or spacing rule?
No validated vitamin E cutoff or hourly separation schedule for rivaroxaban is established here. NIH notes that the amount producing a clinically important interaction is uncertain. A dose mentioned in general guidance should not become a guaranteed safe boundary. Record the vitamin E in all your products, including multivitamins and combination supplements, and distinguish those doses from ordinary foods containing the vitamin.
What is the practical next step?
Ask your pharmacist or prescriber to review the reason for supplementation, the total dose and other medicines that affect bleeding, such as aspirin. Do not alter prescribed rivaroxaban to make room for a supplement. Contact a clinician about unusual bruising or bleeding, and seek urgent help for severe or ongoing bleeding. The current answer is an individualized precaution with limited exact-pair evidence, not proof that every vitamin E exposure is dangerous.
Evidence and practical considerations
Side effects & toxicity
High-dose vitamin E deserves a medication review before use with rivaroxaban. Vitamin E carries a general bleeding precaution with anticoagulants, but direct clinical evidence for this exact combination is limited. The available evidence does not establish a safe supplement dose or a specific increase in bleeding risk.
- Exact scope
- Adult oral rivaroxaban with supplemental vitamin E. High-dose single-ingredient products, multivitamins and vitamin E naturally present in foods are distinct exposures. with adult oral rivaroxaban tablets
- Medication form and route
- adult oral rivaroxaban tablets; oral supplement
- Timing or duration
- Concurrent oral supplementation; no exact-pair duration threshold established. The retrieved warfarin trial abstract did not specify the supplement dose or duration.
What remains uncertain
- No directly informative rivaroxaban-vitamin E clinical trial was identified in targeted searches. General guidance and a small neutral warfarin INR trial cannot establish exact-pair bleeding risk, a safe dose threshold or protective spacing.
Factors that may matter: Exact supplement formulation, composition and daily dose; Kidney function, indication, bleeding history and concurrent medicines; Recent supplement initiation or discontinuation.
Read the supporting source summaries
Source 1: current U.S. regulatory prescribing information
dailymed.nlm.nih.gov · Source check Sep 10, 2026
Population: People using oral rivaroxaban for approved indications.
Avoid combined P-gp/strong CYP3A inducers including St. John’s wort. Rivaroxaban can cause serious bleeding, and premature discontinuation increases thrombotic risk. Adult 15 mg and 20 mg doses are taken with food.
How this applies: Exact rivaroxaban ingredient and oral formulation. Direct named applicability to Hypericum perforatum avoidance; medication-only context for ginkgo and vitamin E. Exact article scope: Adult oral rivaroxaban with supplemental vitamin E. High-dose single-ingredient products, multivitamins and vitamin E naturally present in foods are distinct exposures.
General bleeding precautions are not proof that every supplement increases rivaroxaban bleeding. The label does not supply a ginkgo- or vitamin E-specific effect size or safe spacing interval.
Source 2: government clinical reference
ods.od.nih.gov · Source check Sep 10, 2026
Population: People using vitamin E supplements with anticoagulant or antiplatelet medicines.
The reference describes possible increased bleeding, especially when vitamin K intake is low, while stating that the clinically important amount is uncertain.
How this applies: Indirect supplement evidence. This source does not establish the size or causality of a rivaroxaban-specific bleeding interaction. Exact article scope: Adult oral rivaroxaban with supplemental vitamin E. High-dose single-ingredient products, multivitamins and vitamin E naturally present in foods are distinct exposures.
Guidance and evidence synthesis, not an exact-pair dose-finding trial. The suggested dose range must not be treated as a verified safe threshold.
Source 3: peer-reviewed original research
pubmed.ncbi.nlm.nih.gov · Source check Sep 10, 2026
Population: 21 people taking chronic warfarin randomized to vitamin E or placebo.
No significant INR change occurred in the vitamin E group.
How this applies: Indirect supplement evidence. This source does not establish the size or causality of a rivaroxaban-specific bleeding interaction. Exact article scope: Adult oral rivaroxaban with supplemental vitamin E. High-dose single-ingredient products, multivitamins and vitamin E naturally present in foods are distinct exposures.
Small trial; the available abstract cannot establish a dose threshold, bleeding risk or safety for all vitamin E products.
Research assessment: · Open full citations ↗
Review and change history
- Publication status
- Published research summary
- Clinical review
- Not yet recorded
| Date | Update |
|---|---|
| Article prepared | |
| Current prescribing information and targeted original sources assessed; current claims adjudicated individually and consumer article written. Exact preparations, conflicting or indirect findings and unresolved limits retained. Clinical sign-off not recorded. | |
| Research summary published |
Article revision: 263c7a02d8bfe38b
This guide brings together the evidence records used by our interaction checker. Each finding retains its own preparation limits, research date, and source summaries.
Full citations require verification. Reading this answer and the source summaries does not.
Taking other supplements or medications?
Use the checker to explore your other combinations. Ask a pharmacist to review the exact products, amounts and medical conditions in your complete list.
Open the interaction checkerInformation, not medical advice. Do not change prescribed treatment based on this guide.