The last word Guidebook to GBL: Rewards, Utilizes, and Basic safety Tips ???? ???? What on earth is GBL? GBL (Gamma-Butyrolactone) is really a chemical compound commonly Employed in industrial and pharmaceutical applications. This is a precursor to GHB (Gamma-Hydroxybutyrate), a compound known for its sedative and euphoric results. GBL is often pr