Does dandelion root cause heart palpitations? What the research does and doesn't show

No study has tested dandelion root against heart palpitations, arrhythmia or heart disease, in either direction. The only human trial of dandelion measured urination frequency, not heart rhythm, and the animal research that exists on dandelion and the heart didn't test for palpitations either.

What the evidence doesn't support

It doesn't support the idea that dandelion root causes heart palpitations, and it doesn't support using it to treat or prevent heart disease, arrhythmia or any cardiovascular condition. No trial, in people or animals, has measured a palpitations or arrhythmia outcome after dandelion root of any kind.

What the trials found

The only published human trial of dandelion gave 17 healthy adults a liquid dandelion leaf extract three times over a single day and tracked urination frequency and fluid excretion — not heart rate, rhythm or any cardiac measure. Separately, one animal study gave rats dandelion root daily for four weeks, then isolated and artificially perfused their hearts to measure pumping pressure and oxidative-stress markers; dandelion root didn't harm the isolated heart's pumping function, but that study measured heart-muscle pressure in an organ removed from the body under lab conditions, not palpitations or rhythm in a living animal. Neither study offers a signal on palpitations one way or the other. See dandelion root and blood pressure for the full detail on that animal research.

Dandelion root's best-studied human effect is a mild, short-term increase in urination frequency after a leaf extract dose. A shift in fluid balance is one plausible reason a diuretic herb could, in theory, affect electrolyte levels that matter for heart rhythm — but no trial has tested dandelion root against electrolytes or heart rhythm to confirm or rule that out.

Questions people ask

Can dandelion root cause heart palpitations?

No study has reported this. The only human trial of dandelion measured urination frequency, not heart rate or rhythm, so there's no direct evidence either way.

Does dandelion root tea affect the heart?

No trial has measured a heart-rhythm outcome from dandelion root tea. One animal study found dandelion root didn't harm an isolated rat heart's pumping function, but that's a different measure from heart rhythm or palpitations in a living person.

When to talk to a doctor

Dandelion root is not a treatment for heart disease, arrhythmia or palpitations, and it shouldn't delay getting palpitations checked out — a racing, fluttering or irregular heartbeat is worth a doctor's evaluation regardless of what you've been drinking. If you take a heart medication, a diuretic, or anything that affects potassium or fluid balance, check with your doctor or pharmacist before adding dandelion root — see dandelion root and medications and who should not take dandelion root.