L-Arginine
Also known as: Arginine
An amino acid taken orally and studied as a nitric-oxide precursor for circulation.
L-Arginine at a glance
| Name | L-Arginine |
|---|---|
| Also known as | Arginine |
| Category | Energy & metabolism |
| Type | Amino / injectable |
| Sequence | Amino acid. |
| Typical dose | Commonly ~3-6 g per day as a supplement |
| Frequency | Once daily or divided doses |
| Route | Oral |
| Half-life | Short; cleared over a few hours. |
Overview
L-Arginine is a conditionally essential amino acid and a precursor to nitric oxide, a signaling molecule involved in blood-vessel dilation. It is studied for circulation and exercise contexts, though absorption can be variable when taken orally.
How it’s thought to work
- Serves as a substrate for nitric-oxide synthesis.
- Nitric oxide contributes to blood-vessel dilation.
- Participates in the urea cycle and protein synthesis.
Researched uses
- Circulation and blood-flow support
- Exercise performance contexts
- General nitric-oxide precursor supplementation
Commonly cited protocol
| Typical dose | Commonly ~3-6 g per day as a supplement |
|---|---|
| Frequency | Once daily or divided doses |
| Route | Oral |
| Notes | Oral absorption is variable; some prefer citrulline for this reason. |
Reconstitution
Not applicable - this is an oral supplement, so injection unit math does not apply.
Cautions
- A dietary supplement, not a medical treatment.
- High doses may cause digestive upset or lower blood pressure.
- Those on blood-pressure medication or with heart conditions should seek guidance.
L-Arginine FAQ
What is L-Arginine?
An amino acid taken orally and studied as a nitric-oxide precursor for circulation.
How does L-Arginine work?
Serves as a substrate for nitric-oxide synthesis. Nitric oxide contributes to blood-vessel dilation. Participates in the urea cycle and protein synthesis.
What is L-Arginine used for?
Circulation and blood-flow support; Exercise performance contexts; General nitric-oxide precursor supplementation.
What is a typical L-Arginine dose?
Commonly ~3-6 g per day as a supplement, Once daily or divided doses, Oral. This is a commonly cited figure for context only, not medical advice.
How do you reconstitute L-Arginine?
Not applicable - this is an oral supplement, so injection unit math does not apply.
What is the half-life of L-Arginine?
Short; cleared over a few hours.