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

Three meta-analyses have pooled artichoke extract trials on blood pressure, and they don't agree: one found no overall effect, one found a small reduction, and a third found a modest drop across both readings. None isolated a dose that worked reliably, and none tested people using it instead of blood pressure medication.

What the evidence doesn't support

It doesn't support artichoke extract as a treatment for high blood pressure or hypertension, and it doesn't support using it in place of a prescribed blood pressure medication. The research itself is split: the largest pooled analysis of eight trials found no significant overall change in either systolic or diastolic readings, while two more recent pooled analyses did find small average reductions. None of the three settled on a single dose or duration that reliably worked, and none tested artichoke extract against or alongside blood pressure medication in people already being treated for hypertension.

What the trials found

A 2021 systematic review and meta-analysis pooled eight randomized, placebo-controlled trials of artichoke supplementation and found no significant overall change in systolic blood pressure (weighted mean difference: -0.77 mmHg) or diastolic blood pressure (-0.11 mmHg) compared with placebo. A subgroup analysis within the same review told a more specific story: among participants already diagnosed with hypertension, both readings were several points lower with artichoke than placebo, and a 12-week duration showed a diastolic effect that an 8-week duration didn't. The same review found no blood pressure effect at all in the subgroup with fatty liver disease rather than hypertension.

A separate 2022 dose-response meta-analysis of seven trials in 472 adults reached the opposite headline conclusion: pooled across all the trials, systolic readings were about 2 mmHg lower and diastolic readings about 1.5 mmHg lower with artichoke extract than placebo, both statistically significant. The effect was larger in trials using 500 mg a day or less, lasting more than 8 weeks, in participants under 50, and in smaller trials — a pattern that can also be a sign of publication bias or small-study effects rather than a true dose response.

A third, broader 2025 meta-analysis of artichoke and cardiometabolic markers reported similar modest changes in both systolic (about 2.5 mmHg) and diastolic (about 1.5 mmHg) blood pressure across its pooled trials, alongside changes in cholesterol, insulin markers and liver enzymes covered on the artichoke extract benefits and artichoke extract and liver health pages. And a 12-week trial in 80 adults with metabolic syndrome, using a higher dose of 1,800 mg a day, found no significant overall change in blood pressure, blood glucose or lipids at all. Put together: three reviews pooling overlapping but not identical sets of trials reach different headline numbers, the effect size when found is small — 2 to 3 mmHg — and no trial has tested it in people managing their blood pressure with medication.

Questions people ask

Does artichoke extract lower blood pressure?

The evidence is mixed. Two recent meta-analyses found small average reductions — roughly 1.5 to 2.5 mmHg — across pooled trials; an earlier, differently-scoped review of eight trials found no significant overall effect and only saw a reduction in the subgroup already diagnosed with hypertension. A single higher-dose trial (1,800 mg a day) found no effect at all. There's no consistent, well-replicated finding here.

How much artichoke extract should I take for blood pressure?

There isn't an established dose. The trials behind these reviews used doses from roughly 300 mg to 1,800 mg a day, and one review noted the effect looked larger at 500 mg a day or less — but that pattern came from pooling different trials, not from testing doses head-to-head, so it isn't a dosing recommendation. See artichoke extract dosage for what's typically on a label.

Can artichoke extract cause high blood pressure?

No trial reviewed here reported a rise in blood pressure with artichoke extract; the range of findings runs from no change to a small drop, never an increase.

When to talk to a doctor

Blood pressure that's elevated, or a diagnosis of hypertension, needs monitoring and treatment from a doctor — artichoke extract is not a substitute for that, even in the reviews that found a small effect. If you take blood pressure medication or any other prescription, or are pregnant or nursing, talk to a doctor before adding a supplement; see artichoke extract and medications: what to check.

Related reading: artichoke extract benefits: what the research shows, does artichoke extract help with liver health?, and artichoke extract dosage.