Aspirin and Tamarind: Interaction Details
AI-assisted, pharmacist-reviewed · Source data updated Jul 11, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Aspirin
Tamarind
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
What happens
Increased salicylate toxicity
Interaction Deep Dive
It has been proposed that tamarind decreases the gastrointestinal tract pH, favoring the production of unionized lipid-soluble acetylsalicylic acid molecules. These molecules are more readily absorbed across the gastrointestinal tract and result in increased plasma levels1. Patients taking both compounds together may be more prone to salicylate-mediated adverse effects and/or toxicity including tinnitus, increased risk of bleeding, nausea, vomiting, and anorexia 1.
Why it happens (mechanism)
Increased plasma salicylate levels
Literature reports
1 report — tap to read
a) Bioavailability of aspirin 600 milligrams (mg) was significantly increased when taken with Tamarindus indica fruit extract in 6 healthy volunteers. Tamarind extract was prepared from dried tamarind fruit and incorporated into millet porridge; the exact amount of tamarind extract in each portion given to subjects was not determined. Aspirin Cmax increased from 10.04 +/- 0.11 micrograms (mcg)/ mL to 28.62 +/- 0.21 mcg/mL (p less than 0.05), area under the curve (AUC) (from zero to six hours) increased from 14.05 +/- 0.11 mcg/mL/hour to 86.57 +/- 0.12 mcg/mL/hour (p less than 0.05), and half-life increased from 1.04 +/- 0.12 hours to 1.5 +/- 0.44 hours (p less than 0.05) 1.
Common questions
Can I take Aspirin and Tamarind together?
Increased salicylate toxicity Always confirm with your pharmacist or prescriber before making any change.
How serious is the Aspirin and Tamarind interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "rapid". Effects can appear quickly, often within about 24 hours of combining the drugs.
How strong is the evidence for this interaction?
The evidence is graded "probable". Good supporting evidence, though not definitively proven.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Aspirin or Tamarind need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there anything you'd monitor while I'm on both?
References (1)
- Mustapha A, Yakasai IA, & Aguye IA: Effect of Tamarindus indica L. on the bioavailability of aspirin in healthy human volunteers. Europ J Drug Metab Pharmacokinet 1996; 21(3):224-226.
Keep reading about Aspirin
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
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