Taking L-arginine or L-citrulline supplements might help lower blood pressure by helping blood vessels relax better, but other things in the body can get in the way and make it less effective.

2

Pro

0

Against

Evidence from Studies

Supporting (1)

2

Community contributions welcome

2

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

Narrative Review

2019 Jul 22

The study shows that taking L-arginine and L-citrulline can lower blood pressure, likely by helping the body make more nitric oxide, but it’s not as simple as just adding more raw material—other hidden factors might be getting in the way, which is exactly what the claim says.

Contradicting (0)

0

Community contributions welcome

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

Even when there's already plenty of L-arginine in the blood, adding more still makes more nitric oxide—which is weird because you'd think the body would stop making more once it has enough. This suggests something else besides just having more原料 is controlling how much nitric oxide gets made.

2

0

73%

Taking a specific amino acid called L-citrulline twice a day for a week helps raise levels of another amino acid, L-arginine, in the blood more than taking L-arginine directly—this might help your body make more nitric oxide, which is good for blood flow.

66

0

72%