Agmatine Sulfate

●○○Limited Evidence

A decarboxylation product of arginine with complex pharmacology — modulates NO production, reduces pain, and acts on multiple receptor systems. Under-researched in athletes.

Effective Dose

500–1500mg / day

per clinical evidence

Evidence Level

Limited

Blood Flow & Pump

Mechanism

NOS modulation, NMDA receptor antagonism, imidazoline receptor agonism

primary action

Best For

Pump

Pain relief, Cognitive clarity

This profile is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare professional before starting any supplementation, especially if you have pre-existing conditions or take medications.

What Is Agmatine Sulfate?

Agmatine is produced by decarboxylation of L-arginine and is found in small amounts in fermented foods. It has a complex pharmacological profile, acting on imidazoline receptors, NMDA receptors, and nitric oxide synthase isoforms. In the gym context, it is valued for sustained pump and reported mood effects.

How It Works: The Science

Agmatine inhibits inducible NOS (iNOS) and neuronal NOS (nNOS) while sparing endothelial NOS (eNOS) — theoretically producing a 'cleaner' NO signal without the cardiovascular complications of non-selective NOS inhibition. It also antagonises NMDA receptors (analgesic effect) and stimulates imidazoline receptors (mood/focus effects).

Primary Mechanism

NOS modulation, NMDA receptor antagonism, imidazoline receptor agonism

Evidence-Based Benefits

May enhance and prolong muscle pump by modulating NO production

limited

Mechanisms proposed; no published RCT on pump or exercise performance in athletes

Reduces neuropathic pain via NMDA antagonism

limited

Case studies and small trials in pain clinics; not tested in athletic populations

Dosage Guide

Effective Dose

500–1500mg / day

500–1500mg/day, typically 30–60 minutes before training. Tolerance appears to develop at higher doses — cycling may be beneficial. Usually taken as agmatine sulfate salt.

Safety Profile & Side Effects

Limited human safety data. Generally well tolerated at commonly used doses. May reduce blood pressure. Avoid with medications that lower blood pressure or with MAO inhibitors.

Who Should (and Shouldn't) Take It

Best for

PumpPain reliefCognitive clarity

Who it's for

Gymgoers seeking an alternative to straight arginine for pump effects. More of a 'feel-good' supplement than a performance-proven one. Use with appropriate expectations given limited evidence.

Frequently Asked Questions

What is the recommended dose of Agmatine Sulfate?

500–1500mg/day, typically 30–60 minutes before training. Tolerance appears to develop at higher doses — cycling may be beneficial. Usually taken as agmatine sulfate salt.

Is Agmatine Sulfate safe?

Limited human safety data. Generally well tolerated at commonly used doses. May reduce blood pressure. Avoid with medications that lower blood pressure or with MAO inhibitors.

How does Agmatine Sulfate work?

Who should take Agmatine Sulfate?

Gymgoers seeking an alternative to straight arginine for pump effects. More of a 'feel-good' supplement than a performance-proven one. Use with appropriate expectations given limited evidence.

Related Ingredients

L-Citrulline / Citrulline Malate Nitrosigine (Arginine Silicate)Beetroot Extract (Dietary Nitrate)

Medical Disclaimer

Ingredient profiles are for informational purposes only and do not constitute medical advice. Consult a qualified healthcare professional before starting any supplementation, especially if you have pre-existing conditions or take medications. Full disclaimer →