Does cinnamon help with blood pressure? What the research does and doesn't show

The evidence doesn't support cinnamon as a blood pressure treatment. Pooled trial data shows a small average reduction — a few millimeters of mercury — mostly in people with an existing metabolic condition, at gram-scale cinnamon doses. That's a modest research signal in a specific population, not a reason to use cinnamon in place of blood pressure monitoring or medication.

What the evidence doesn't support

It doesn't support cinnamon lowering blood pressure reliably, or in a healthy adult without an existing metabolic condition. A 2024 umbrella review pooling earlier meta-analyses of randomized trials found a small average reduction in systolic blood pressure (about 2.4 mmHg) and diastolic blood pressure (about 1.7 mmHg) associated with cinnamon supplementation — but the underlying trials were run mostly in adults with cardiometabolic risk factors such as type 2 diabetes or PCOS, not a general population, and the umbrella review didn't report a single pooled dose across the trials it combined. Cinnamon is not a treatment for high blood pressure, and a pooled average this small doesn't tell an individual reader what, if anything, they'd notice on a home blood pressure cuff.

What the trials found

The 2024 umbrella review searched four databases through March 2024 and pooled earlier meta-analyses of randomized controlled trials measuring cinnamon's effect on blood pressure, oxidative stress and inflammation in adults. It found a systolic blood pressure reduction of about 2.4 mmHg (95% CI -3.86 to -1.40) and a diastolic reduction of about 1.7 mmHg (95% CI -2.41 to -0.90). For context, cinnamon's own dose-finding research generally falls in the 1 to 6 grams a day range of ground bark, or several hundred milligrams of a concentrated extract; the underlying blood-pressure trials weren't run in a general healthy population but in adults already carrying cardiometabolic risk factors, which limits how far a 2.4 mmHg average can be generalized. A 2 mmHg average pooled effect is also close to the range of normal reading-to-reading variation on a single home blood pressure cuff, which is a reason the certainty here is described as favorable rather than established.

The same umbrella review measured inflammation markers alongside blood pressure and found a mixed picture: a small reduction in interleukin-6, but no significant effect on C-reactive protein, a marker of oxidative damage (malondialdehyde), or a cell-adhesion marker (ICAM-1). Reporting the blood pressure finding without the inflammation nulls would overstate how consistent cinnamon's cardiometabolic signal actually is across markers.

Questions people ask

Does cinnamon lower blood pressure?

Pooled trial data shows a small average reduction, mostly in people with an existing metabolic condition, at gram-scale doses. It's not established as reliable, and it isn't a substitute for blood pressure medication or monitoring.

Is cinnamon good for high blood pressure?

High blood pressure is a medical condition that needs medical management. The research above describes a small average effect in a specific, already-metabolically-at-risk population — not a basis for using cinnamon to manage a blood pressure diagnosis on your own.

How much cinnamon should I take for blood pressure?

There's no dose specifically established for blood pressure. The broader cinnamon trial literature generally uses 1 to 6 grams of ground bark a day — see cinnamon dosage — and reaching the higher end of that range with cassia cinnamon raises its own coumarin exposure question, covered below.

When to talk to a doctor

High blood pressure is a medical condition that needs a doctor's guidance, not a supplement search. Cinnamon is not a treatment for it, and nothing in the research above supports using it as a substitute for prescribed medication or monitoring. If you're considering a gram-scale cassia cinnamon dose anywhere near what these trials used, that's also worth mentioning to a doctor: cassia's coumarin content sets its own separate safety ceiling, unrelated to any blood pressure finding (see cinnamon dosage and who should not take cinnamon).

Related reading: cinnamon benefits: what the research does and doesn't show, cinnamon dosage, and does cinnamon help with inflammation?.