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    Botanical guide · Ingredient reference

    Saffron and coagulation tests: a short null trial is not an interaction clearance

    A healthy-volunteer study found no differences in selected coagulation measures after seven days. It did not test prevention of clots or compatibility with anticoagulant medicines.

    Read the evidence ↓

    Supplement Science Insights Editorial Team

    Published September 23, 2026

    Study and results

    Sixty adults were divided among placebo and two saffron-tablet groups in a double-blind study. Blood was sampled before treatment, after a week and again one month later. [1]

    The measured panel included fibrinogen, factor VII, proteins C and S, prothrombin time and partial thromboplastin time. None showed a significant difference between groups. [1]

    Interpretation and limitations

    A laboratory panel in healthy volunteers does not capture every platelet effect or clinical bleeding event. The short duration also limits long-term inference. Funding and conflicts were not established from the abstract; the findings do not support using saffron as a blood thinner. [1]

    A hypothetical distinction

    Imagine several clotting tests remain unchanged. That answers the tests’ question under those conditions, not every possible medication interaction.

    Evidence summary — Saffron and coagulation tests
    DetailInterpretation
    Selected laboratory testsNo group difference
    Clinical clot preventionNot measured
    Anticoagulant combinationNot tested
    Saffron and coagulation tests: a short null trial is not an interaction clearance — original article outline diagram
    Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

    Sources for this article

    1. Effect of Crocus sativus L. (saffron) on coagulation and anticoagulation systems in healthy volunteers - PubMed
      Source consulted: 2026-09-19. This is a reference resource, not a claim that we conducted the studies or tested a product.