Druglink factsheet 2014 – GBL

GBL (gamma-butyrolactone) is a ‘pro-drug’ of GHB, which means that it converts to GHB within the body. GBL occurs naturally in certain food products, is found in small quantities in the human body and is available commercially as an industrial solvent and as an ingredient in cleaners, paint removers and engine degreasers.

Factsheet GBL (PDF)