The last word Information to GBL: Rewards, Utilizes, and Basic safety Suggestions ???? ???? Exactly what is GBL? GBL (Gamma-Butyrolactone) can be a chemical compound greatly Employed in industrial and pharmaceutical programs. This is a precursor to GHB (Gamma-Hydroxybutyrate), a compound known for its sedative and euphoric results. GBL is often lo