Interaction databaseSupplement × PrescriptionReviewed May 2026

Apixaban and Turmeric/Curcumin, a caution.

Curcumin has antiplatelet properties that may increase bleeding risk when combined with apixaban. While no direct pharmacokinetic interaction has been established, the additive effect on hemostasis through different mechanisms warrants caution.

One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.

Sourcing standards·Evidence tiers

From the interaction database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, the recommendation, and the primary literature.

At a glance

Substances
Apixaban and Turmeric/Curcumin
Pair type
Caution
Evidence (highest tier)
Emerging
Source citations
1 source
Stack Score effect
−5 to your Stack Score (per scored caution row).
Scope
Supplement × Prescription
Last verified
May 30, 2026

Caution · Emerging evidence

Caution

What is happening. Curcumin has antiplatelet properties that may increase bleeding risk when combined with apixaban. While no direct pharmacokinetic interaction has been established, the additive effect on hemostasis through different mechanisms warrants caution.

Mechanism. Curcumin inhibits platelet aggregation by suppressing thromboxane A2 synthesis and blocking calcium signaling. This antiplatelet effect adds to apixaban's anticoagulant activity (Factor Xa inhibition), increasing overall bleeding risk through complementary hemostatic pathways.

Recommendation. Use low-dose curcumin cautiously with apixaban. Avoid high-dose curcumin supplements. Watch for signs of unusual bleeding or bruising and report them to your healthcare provider.

Sources (1)
  1. Shah BH et al. Inhibitory effect of curcumin on platelet aggregation. Biochem Pharmacol. 1999;58(7):1167-1172. PMID 10484074

Stack Score

How this pair moves the number.

Effect on the composite score

If both Apixaban and Turmeric/Curcumin are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).

The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.

Check your full routine

One pair was the worked example. NutriStack runs every pair in your stack at once.

Drop in your supplements and prescriptions and the public database surfaces every interaction, synergy, timing rule, and contraindication, every one linked to its primary source.

NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.