Taking L-arginine pills every day for a few weeks to a few months might help lower your blood pressure a little—like how eating healthier foods (such as the DASH diet) does.
Claim Language
Language Strength
association
Uses association language (linked to, correlated with)
The claim uses the phrase 'is associated with', which indicates a statistical link rather than a direct cause. It does not claim that L-arginine causes the reduction, only that the two are linked.
Context Details
Domain
nutrition
Population
human
Subject
Oral L-arginine supplementation at doses of 4–24 g/day for 2–24 weeks
Action
is associated with a reduction in
Target
systolic blood pressure by 5.39 mmHg and diastolic blood pressure by 2.66 mmHg in adults with varying baseline blood pressure levels, including normotensive and hypertensive individuals
Intervention Details
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Evidence from Studies
Supporting (1)
The Effects of Oral l-Arginine and l-Citrulline Supplementation on Blood Pressure
This study found that taking L-arginine pills for several weeks lowers blood pressure by about the same amount as eating healthier foods like the DASH diet, which is exactly what the claim says.