What is fphenibut?

Fphenibut, also known as phenibut FA, is a central nervous system depressant and a derivative of the neurotransmitter GABA. It was developed in Russia in the 1960s as a treatment for anxiety, insomnia, and other mental health disorders. It has also been used as a cognitive enhancer and to improve mood and social behavior.

Fphenibut is structurally similar to GABA but can easily cross the blood-brain barrier, resulting in increased brain activity. It activates GABA receptors in the brain, leading to a calming effect and lowering anxiety.

Like many psychoactive substances, fphenibut carries potential risks and side effects, including dependency, withdrawal symptoms, and overdose. It should not be used without medical supervision and proper dosing.

Due to its potency and potential risks, fphenibut is not approved for medical use in the United States. However, it can be purchased online as a dietary supplement or research chemical.