SuplrSuplr
Amino acids 20% confidence · 3 studies

L-Arginine

Amino acid precursor of nitric oxide. Improves blood flow, erectile function, and may support athletic performance. Citrulline is more effective at raising plasma arginine.

Morning Empty stomach +18 years

What is it for?

Heart health

Slightly lowers blood pressure

Low evidence

Absorption: L-citrulline raises arginine more efficiently than oral arginine (hepatic first-pass effect). Take on an empty stomach for better absorption.

Caution: May trigger cold sores in susceptible individuals. Interacts with antihypertensives and Viagra. Do not use with a recent heart attack.

Recommended doses

general5000 mg

Range: 2000 – 9000 mg

Scientific references (3)▼
L-arginine supplementation and exercise performance (Campbell B et al., J Int Soc Sports Nutr)(2006)PUBMED

Review of L-arginine effects on exercise capacity and growth hormone release.

Oral L-arginine improves endothelial function in patients with hypertension (Lekakis JP et al., Int J Cardiol)(2002)PUBMED

L-arginine (6g/d) significantly improves flow-mediated dilation in hypertensive patients.

L-arginine and nitric oxide in vascular function (Bode-Boger SM et al., J Pharmacol Exp Ther)(1998)PUBMED

L-arginine improves endothelial function via nitric oxide pathway.

Want to know if L-Arginine is right for you?

Take our personalized test and discover the ideal supplement combination.

Take the test

Product comparator (3)

Sorted by cost per dose, from cheapest to most expensive

Best price per dose
L-Arginina 6000mg - 365 Cápsulas Veganas
L-Arginina 6000mg - 365 Capsules Vegan

RAIBU DE

18.81€0.05€/dose~1.55€/month
6000mg L-arginina 365 servings★ 4.5
Amazon Free with Prime
Buy
L-Arginina 4500mg - 365 Cápsulas Veganas
L-Arginina 4500mg - 365 Capsules Vegan

Natural Elements DE

20.50€0.06€/dose~1.68€/month
4500mg L-arginina 365 servings★ 4.4
Amazon Free with Prime
Buy
L-Arginine 270 Capsulas 700mg Vegano
L-Arginine 270 Capsules 700mg Vegan

Vegavero DE

17.90€0.07€/dose~1.99€/month
700mg L-arginina 270 servings★ 4.3
Amazon Free with Prime
Buy

Suplr may receive a commission for purchases made through the links on this page. This does not affect the price you pay or our recommendations, which are based exclusively on scientific evidence.