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What is Phenibut?
Dec 29, 2018

Phenibut is a central nervous system depressant with anxiolytic and stimulant effects which is used in the treatment of anxiety, insomnia, and for a variety of other indications. It is usually taken by mouth as a tablet, but can also be given as an intravenous infusion.

Phenibut is used in Russia, Ukraine, and Latvia as a pharmaceutical drug to treat anxiety and to improve sleep (e.g., in the treatment of insomnia). It is also used for various other indications, including the treatment of asthenia, depression, alcoholism, alcohol withdrawal syndrome, post-traumatic stress disorder, stuttering, tics, vestibular disorders, Ménière's disease, dizziness, for the prevention of motion sickness, and for the prevention of anxiety before or after surgical procedures or painful diagnostic tests.



Phenibut is also available in its free amino acid (FAA) form. In recent years, the FAA variety of Phenibut has been made accessible on the market and has become something of a rival to the classic Phenibut HCL due to its suitability for sublingual administration.  Unlike Phenibut HCL, the FAA version can be taken under the tongue where it dissolves and enters the bloodstream directly.  Although its sublingual property may seem convenient to some, it is generally not recommended to take Phenibut FAA in capsule form because Phenibut FAA is a powdery substance that is not highly soluble and thus, more likely to break apart or not fully dissolve in water.  If you’re wondering which substance form is more convenient between Phenibut HCL vs. FAA, then you will have to ask yourself whether you want to take Phenibut in water, capsule, or sublingual form. Although users can administer FAA under the tongue, Phenibut HCL can be quickly consumed with a swish of water or in a capsule form.

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