GABOB 

gamma-Amino-beta-hydroxybutyric acid

GABOB is also known as gamma-Amino-beta-hydroxybutyric acid or 4-amino-3-hydroxybutanoic acid. GABOB is a lesser known metabolite and analogue of GABA, which is available on the Internet under the trade name Gamibetal.  This may be a compound that interests phenibut users. It is sold as an anticonvulsant for epilepsy in Europe, Japan, and Mexico. Structurally GABOB resembles GABA with a hydroxyl group at the 3 position. GABOB functions as an inhibitory neurotransmitter, which produces anxiolytic and anticonvulsant effects. Studies have shown dose dependent effects of GABOB on growth hormone levels, although I could not find any that used oral administration. Users can expect effects similar to GABA but with greater potency; due to GABOB's ability to cross the blood-brain barrier. GABOB should make for an effective sleep/relaxation aid.