What is 1,4 BD or GBL?
1,4-BD (1,4-butanediol) and GBL (gamma-butyrolactone) are chemicals that are closely related to GHB. They are often known as ‘precursors’ to GHB because they convert to GHB in the body. They are industrially used as a paint stripper or solvents. Both GBL and 1,4 BD are often sold as GHB, and because they convert to GHB …