Amino Acid
L-Arginine (Sexual Function)
Also known as: Arginine, L-Arg, Nitric oxide precursor
B
Evidence
Amino acid that boosts nitric oxide for blood flow, supporting erectile function.
Primary uses
- Erectile function
- Blood flow
- Sexual response
- Nitric oxide
How it works
- Precursor to nitric oxide
- Increases blood flow
- Supports erectile function
- Also cardiovascular benefits
Dosage
- Typical range
- 3-6g daily for erectile support
- Timing
- Divided doses, before sexual activity
- With food
- Away from food for better absorption
- Duration
- Ongoing for effect
- Special populations
- Mild ED, cardiovascular support
Forms
- L-Arginine powder
- L-Arginine HCL
- AAKG
Safety
Common side effects
- GI upset
- Diarrhea
- Bloating
- May activate herpes
Contraindications
- Recent heart attack
- Herpes (may trigger)
- Low blood pressure
Evidence notes
Good evidence for mild erectile dysfunction
Grade B: Some human trials support key claims; further confirmation needed.
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