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.

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Evidence from Studies

Supporting (1)

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Community contributions welcome

2

The Effects of Oral l-Arginine and l-Citrulline Supplementation on Blood Pressure

Narrative Review

2019 Jul 22

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.

Contradicting (0)

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No contradicting evidence found

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.

Source Study

The Effects of Oral l-Arginine and l-Citrulline Supplementation on Blood Pressure

Score: 2

DOI: 10.3390/nu11071679

Similar Assertions

Taking 6 grams of L-arginine might help healthy young men lower their blood pressure and increase a chemical in their blood that helps blood vessels relax.

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Taking L-arginine pills in these amounts doesn’t raise the levels of L-arginine or related molecules in your blood or urine, because your body breaks them down too quickly before they can get into your system.

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Taking a specific amino acid supplement called L-arginine every day for three weeks helps people who’ve had a heart attack and are in rehab walk farther in six minutes than those who take a sugar pill.

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