Phenibut
GABAergics

Phenibut: Benefits, Dosing, Side Effects, And More!

The typical dosage range for Phenibut is between 250 mg to 1500 mg per day
Synthetic NootropicsRussian/Soviet Compounds
Regulatory Warning: This substance is subject to active FDA enforcement action, has been involved in federal criminal prosecutions, or is classified as unsafe for sale as a dietary supplement. This page is retained for educational and harm-reduction purposes only. Do not purchase or consume this substance based on information found here.

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Overview

Phenibut is a synthetic derivative of the neurotransmitter GABA (gamma-aminobutyric acid). It is primarily used for its anxiolytic and nootropic effects, promoting relaxation, reducing anxiety, and enhancing cognitive function.

Dosage

The typical dosage range for Phenibut is between 250 mg to 1500 mg per day, often taken in divided doses. It is recommended to take it on an empty stomach for optimal absorption, and users should be cautious of tolerance and potential withdrawal effects with prolonged use.

Research & Studies

This section includes 7 peer-reviewed studies referenced in our analysis.

Medical Disclaimer: This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare provider before starting any supplement regimen.
Reference ID: 306 Updated: Feb 5, 2026