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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.

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Daily target & upper limit

3 g / day

L-Arginine (Sexual Function) has an established daily reference intake. See best forms, label synonyms, upper-limit warnings, and top-scoring supplements:

L-Arginine (Sexual Function) dosage reference →

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

Products containing L-Arginine (Sexual Function)

Top-scoring supplements in our catalog that list L-Arginine (Sexual Function) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Nootropics Depot
AAKG 2
92
Thorne
L-Arginine Plus
91
Thorne
L-Arginine
85
See all products →

Evidence notes

Good evidence for mild erectile dysfunction

Grade B: Some human trials support key claims; further confirmation needed.

Cited research for L-Arginine (Sexual Function)

Clinical studies referenced across Formulate guides that mention l-arginine (sexual function). Each links to the full study page with PubMed source + the guides that cite it.

Related in Amino Acid

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.