L-Arginine
Also known as: Free-Form Arginine Base
Original NO precursor, cheaper but less bioavailable than citrulline.
- Clinical dose
- 5 g, 30–60 min pre
- Typical label dose
- 3–6 g
- Category
- Pump
- Pump
- Vasodilation
What it is & how it works
Direct substrate for nitric oxide synthase; oral bioavailability is limited by first-pass metabolism.
Dosage
The clinically studied dose is 5 g, 30–60 min pre.On labels you'll typically see 3–6 g.
What the research shows
Cheaper alternative to citrulline; almost always stacked because of poor oral bioavailability vs citrulline.
Studies & citations
Formulas it appears in
- Pre-Workout
- Pump Formula
Budget pump formulas, mass gainers
Categories
L-Arginine FAQ
What is L-Arginine?
Original NO precursor, cheaper but less bioavailable than citrulline.
How much L-Arginine should I take per day?
The clinically studied dose is 5 g, 30–60 min pre.
What does L-Arginine do?
Cheaper alternative to citrulline; almost always stacked because of poor oral bioavailability vs citrulline.
What is L-Arginine found in?
Budget pump formulas, mass gainers
Related Pump ingredients
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Educational information only, not medical advice, doses reflect published research. Check with a healthcare professional before starting any supplement.