Nootropic

Fasoracetam

Also known as: NS-105, LAM-105

Evidence

Racetam upregulating GABA-B receptors. May help with GABA tolerance and attention.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

GABA modulation
Attention
Anxiety
Phenibut tolerance

How it works

Upregulates GABA-B receptors
Modulates glutamate release
May reverse phenibut tolerance

Dosage

Typical range: 10-100 mg daily
Timing: Any time
With food: Optional
Duration: GABA effects may take time
Special populations: Phenibut withdrawal, attention

Forms

Powder
Capsules

Safety

Common side effects

Headache
Fatigue

Contraindications

Unknown

Evidence notes

GABA-B upregulation unique

Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.