The Claim

L-citrulline supplementation at a dosage of 10 g/day for 4 weeks reduces resting aortic systolic blood pressure by 4 mmHg in hypertensive postmenopausal women, independent of changes in aortic stiffness, indicating a direct effect on arterial tone.

Source: L-Citrulline Supplementation Improves Arterial Blood Flow and Muscle Oxygenation during Handgrip Exercise in Hypertensive Postmenopausal Women

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
66score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

Taking 10 grams of L-citrulline daily for four weeks lowers aortic systolic blood pressure by 4 mmHg in postmenopausal women with hypertension, without altering aortic stiffness, suggesting a direct effect on blood vessel tone.

See the scientific wording

L-citrulline supplementation (10 g/day for 4 weeks) reduces resting aortic systolic blood pressure by 4 mmHg in hypertensive postmenopausal women, independent of changes in aortic stiffness, suggesting a direct vascular effect on arterial tone.

What the research says

1 study
  1. Study: L-Citrulline Supplementation Improves Arterial Blood Flow and Muscle Oxygenation during Handgrip Exercise in Hypertensive Postmenopausal Women

    This study found that taking 10 grams of L-citrulline daily for a month lowered blood pressure in older women with high blood pressure, without changing how stiff their arteries were — meaning it likely helped their blood vessels relax directly.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

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