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L-Arginine and L-Citrulline for Blood Pressure

By the BloodPril Editorial Team. Updated September 2026. Checked against the published Supplement Facts panel.

Quick answer: Meta-analyses found modest blood pressure reductions with L-arginine at 4 to 24 g a day and L-citrulline at 3 to 6 g a day. BloodPril's blend is 500 mg per capsule.

L-arginine

Trials found small average reductions in systolic and diastolic pressure at gram doses. Much oral arginine is broken down before reaching the blood.

L-citrulline

Converted to arginine by the kidneys and raises blood arginine more reliably. Studies used 3 to 6 g a day.

How BloodPril compares

500 to 1,000 mg a day total. Expect gentle support at most. PubMed: citrulline and BP.

General information, not medical advice. BloodPril is a dietary supplement and is not intended to diagnose, treat, cure or prevent any disease.

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