Agmatine Silicate

Amino-acidAgmatine

What is it

Agmatine silicate is a complex of agmatine (a metabolite of arginine) with silicate, used in pre-workout supplements for its claimed effects on nitric oxide, pump, and cognitive focus.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Exercise pump / performance

Mixed Evidence

Manufacturer claims for muscle pump and pre-workout benefits are not supported by robust controlled human trials. Mechanistic plausibility exists but clinical translation is weak.

How it works

Agmatine is formed in the body by decarboxylation of arginine and acts as a neuromodulator. Proposed mechanisms include inhibition of nitric oxide synthase isoforms (modulating NO signaling), binding to imidazoline and alpha-2 adrenergic receptors, and interaction with NMDA receptors. In supplements it is marketed for muscle pump, nutrient partitioning, and pain modulation. Pairing with silicate is claimed to enhance solubility and stability versus agmatine sulfate. Human clinical evidence specifically for oral agmatine performance benefits is limited and inconsistent.

Dosage

Typical supplement doses are 500-1000 mg per serving, often as part of pre-workout stacks. No established RDA or UL.

When and how to take it

Typically taken 30-45 minutes before exercise. Take with water; food does not appear to substantially affect uptake.

1 commercial form

Compare the main delivery options and what they’re best suited for.

Agmatine silicate (Nitrosigine alternative)

Found primarily in pre-workout and pump formulas.

Claimed enhanced solubility vs agmatine sulfate; head-to-head data is limited.

Safety

Short-term use at typical doses is generally tolerated. Reported side effects include nausea and diarrhea at higher doses. Long-term safety data is limited.

Who should be cautious

Avoid in pregnancy and breastfeeding due to lack of safety data. People with cardiovascular conditions or on blood pressure medications should consult a clinician.

Interactions

Theoretical interactions with antihypertensive medications because of nitric oxide and imidazoline pathway effects. Caution if combined with stimulants or other NO-boosting agents.

Food sources

Not a meaningful dietary source

Amount
Trace in fermented foods
%DV
—

Frequently asked questions

Is agmatine silicate the same as Nitrosigine?⌄

Nitrosigine is a specific branded arginine silicate; agmatine silicate is a different compound. Marketing sometimes conflates them, but they are not identical.

References

Agmatine Silicate on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Agmatine Silicate (PubMed search) — PubMed link

Track Agmatine Silicate with Pilora

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.