NutriStack
Aspirin Low-Dose and Warfarin, a caution.
Concurrent anticoagulant and antiplatelet therapy significantly increases bleeding risk. While sometimes used intentionally (e.g., mechanical heart valves), the combination requires careful risk-benefit assessment and close monitoring.
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.
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
- Aspirin Low-Dose and Warfarin
- Pair type
- Caution
- Evidence (highest tier)
- Strong
- Source citations
- 2 sources
- Stack Score effect
- −5 to your Stack Score (per scored caution row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Caution · Strong evidence
Caution
What is happening. Concurrent anticoagulant and antiplatelet therapy significantly increases bleeding risk. While sometimes used intentionally (e.g., mechanical heart valves), the combination requires careful risk-benefit assessment and close monitoring.
Mechanism. Warfarin inhibits vitamin K-dependent clotting factor synthesis while aspirin irreversibly inhibits platelet cyclooxygenase (COX-1). Combined inhibition of both coagulation cascade and platelet aggregation substantially increases hemorrhagic risk.
Recommendation. Only use together when specifically prescribed by a physician for an approved indication. Monitor for signs of bleeding. Use lowest effective aspirin dose. Regular INR monitoring essential.
Stack Score
How this pair moves the number.
Effect on the composite score
If both Aspirin Low-Dose and Warfarin 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.