Research review
Can turmeric cause heart palpitations?
No clinical trial reviewed here has reported heart palpitations as a documented side effect of turmeric or curcumin; the trials' recorded adverse events are mostly gastrointestinal. The genuine, documented heart-related caution is curcumin's antiplatelet activity, which matters for anyone on blood-thinning medication.
No, not according to the trials reviewed here — no clinical study has reported heart palpitations as a documented side effect of turmeric or curcumin. The evidence doesn't support turmeric as a treatment for heart disease either; no trial reviewed here tested it for that purpose. The real, documented heart-related caution is different from palpitations: curcumin has laboratory-confirmed antiplatelet activity, which is why blood-thinning medication — common in people with heart disease — is the actual point to raise with a doctor.
What the evidence doesn't support
It doesn't support turmeric or curcumin as a treatment for heart disease, high blood pressure or any diagnosed cardiovascular condition — no trial reviewed here tested it in that population for that purpose. It doesn't support a claim that turmeric causes heart palpitations, arrhythmia or a fast heart rate either; that specific link doesn't appear as a reported finding in the adverse-event data available. What it does support is a narrower, more useful caution: curcumin's documented effect on platelets, which matters most for people already on heart-related medication.
What the trials found
The most detailed available safety data on curcumin's adverse events comes from a meta-analysis of 8 randomized controlled trials (389 people, mixed populations) that specifically tracked adverse events alongside cognitive outcomes. It found a significantly higher rate of gastrointestinal adverse events with curcumin than with placebo — reported as one general category, not broken into specific symptoms. No cardiac adverse-event category, including palpitations or arrhythmia, appears in that analysis. That's the largest structured adverse-event dataset available for curcumin, not a guarantee that no cardiac symptom has ever occurred in anyone who has taken it, but it's a meaningful absence in the most systematic look at the question.
Separately, a 2018 review of curcumin's effect on platelet function summarized laboratory, animal and some human research showing curcumin has antiplatelet activity — it affects how platelets clump together, through several molecular pathways. That review frames curcumin as a compound of interest for conditions involving blood clotting, based on that mechanism. It's pharmacological and mechanistic evidence, not a human bleeding-outcome trial, but it's the real, documented basis for caution around blood thinners and pre-surgery use, and it's directly relevant to heart disease specifically because blood-thinning and antiplatelet medications (aspirin, clopidogrel, warfarin and others) are commonly prescribed for it.
Questions people ask
Can turmeric cause heart palpitations?
No trial reviewed here has reported palpitations, arrhythmia or a related cardiac symptom as a documented side effect of turmeric or curcumin. The most detailed available adverse-event data shows gastrointestinal symptoms as curcumin's main documented side-effect category, not a cardiac one.
Is turmeric safe if I have heart disease?
No trial has tested turmeric or curcumin as a treatment for heart disease, so it isn't something to add specifically for that purpose. The documented safety concern that matters most for someone with heart disease is curcumin's antiplatelet activity — worth disclosing to a cardiologist, especially if you take a blood thinner or are scheduled for surgery.
Does turmeric affect heart rate?
No trial reviewed here measured a change in heart rate specifically from an oral turmeric or curcumin supplement in humans. This is a gap in the available research, not a documented finding either way.
When to talk to a doctor
New or persistent heart palpitations, chest pain, or shortness of breath deserve prompt medical evaluation, whether or not you take a supplement — they can have many causes and shouldn't be assumed to be from turmeric without a doctor ruling out other explanations. Turmeric and curcumin are not a treatment for heart disease. If you take a blood thinner, antiplatelet medication, or any other prescription, or are pregnant or nursing, talk to a doctor before adding turmeric or curcumin.
Related reading: turmeric and medications: what to check, turmeric side effects, and is turmeric safe to take every day?
Sources
- The regulatory role of curcumin on platelet functions A 2018 review found curcumin has documented antiplatelet activity in laboratory and mechanistic research — it affects how platelets clump together — which is the pharmacological basis for caution around blood thinners, not a human bleeding-outcome trial.
- The Effect of Curcumin Differs on Individual Cognitive Domains across Different Patient Populations: A Systematic Review and Meta-Analysis A 2021 meta-analysis of 8 RCTs (389 people) found curcumin significantly increased the odds of gastrointestinal adverse events versus placebo (OR 3.02) — reported as one general category, not broken into diarrhea, constipation or bloating specifically.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.