Can I Take These?

Can You Take Ashwagandha and Warfarin Together?

No documented interaction was identified between ashwagandha and warfarin in the sources reviewed.

No documented interaction identifiedEvidence: Moderate

See the full Ashwagandha page and Warfarin page for other reviewed interactions and reference information.

What the interaction means

NCCIH's ashwagandha fact sheet does not name anticoagulants, blood thinners, or warfarin among the medication classes it lists. Warfarin's own FDA label, directly checked including its drug-interaction tables, does not mention ashwagandha or Withania somnifera anywhere. A 2026 Phytotherapy Research critical review's directly-read abstract does not address warfarin specifically.

No documented interaction was identified in the authoritative sources reviewed. This is not a guarantee that no interaction exists for every dose, formulation, or individual -- it means the sources checked did not document one.

Practical context

Both substances' own current authoritative sources were checked directly, full text, in both directions. Secondary/commercial sources make unverified claims about case reports of elevated INR with ashwagandha, but no such report could be independently located and directly read this pass, so it is not cited here.

What the sources say

Warfarin Sodium Tablets — FDA Prescribing Information — Amneal Pharmaceuticals LLC (via DailyMed, U.S. National Library of Medicine)Ashwagandha — National Center for Complementary and Integrative Health (NIH)

Last reviewed 2026-08-24

Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.

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