Too Much Cinnamon May Interfere With Some Medications, Study Shows
- A study published in June 2025 found that consuming large amounts of cinnamon could influence the body's ability to absorb and process certain medications.
- The study investigated cinnamon's active ingredient cinnamaldehyde, which might accelerate drug metabolism and cause interactions, especially in supplement form.
- Lead researcher Bill Gurley explained that cinnamaldehyde can activate receptors posing risks for drug interactions, but clinical studies are needed to confirm exact effects.
- Experts advise patients, especially those with chronic illnesses, to consult doctors before using cinnamon supplements, while moderate cinnamon in food remains generally safe.
- The study suggests further research is necessary to clarify cinnamon’s impact on medication effectiveness and to better understand potential spice-drug interactions.
54 Articles
54 Articles

Too Much Cinnamon May Interfere With Some Medications, Study Shows
Key Takeaways
Cinnamon in Excess Amounts Can Interfere With Medications
Cinnamon has earned a reputation as a health booster. But the researchers behind a new study warn that high doses of the spice, specifically in the form of dietary supplements, may decrease the effectiveness of certain prescription drugs. “Overconsumption of supplements could lead to a rapid clearance of the prescription medicine from the body, and that could result in making the medicine less effective,” said study author Shabana Khan, PhD , a …
Cinnamon Might Affect Some Prescription Meds’ Effectiveness, Study Finds
By Erin Blakemore “Overconsumption” of cinnamon could interfere with some medications, a recent study suggests. Published in Food Chemistry: Molecular Sciences, the study cited a lack of scientific data on cinnamon’s effects on human metabolism and questions about how the spice interacts with medications. The study did not specify what amount equates to overconsumption but noted that while limited consumption could have health benefits, prolon…
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