GBL (gammabutyrolactone) is closely related to the illegal drug gammahydroxybutrate (GHB); both are dangerous drugs with sedative and anaesthetic effects.
GBL converts to GHB shortly after entering the body.
GBL is a colourless, oily liquid with a weak odour. It is a common solvent used in products like paint strippers and stain removers.
GHB is usually sold as an odourless liquid in small bottles or capsules (it does come in powder form but is rarer).
It tastes slightly salty.
A teaspoon or a capful is a normal dose although the strength of GHB varies so it can be very difficult for people to know how much they’re taking.
The effects start between 10 minutes to one hour and can last up to seven hours or so.
They both produce a feeling of euphoria and can reduce your inhibitions and make you feel sleepy.
Both can cause nausea, reduced heart rate, drowsiness, coma,
hyphothermia, seizures, unconsciousness, coma and death.
Both are particularly dangerous when used with alcohol and other depressant or sedative substances, including recreational drugs.
GBL is a legal product used widely in industry and found in a number of retail products but GBL (and its like chemical 1,4-Butanediol (1,4-BD)) are now illegal as Class C drugs under the 1971 Act with possession and supply limited where they are intended for human consumption.
GHB is a Class C drug - illegal to have, give away or sell. Possession can get you up to two years in jail and/or an unlimited fine. Supplying someone else with GHB, even your friends, can get you up to 14 years in jail and/or an unlimited fine.
The Sexual Offences Act 2003 states that it is an offence to administer a substance to a person with intent to overpower that person to enable sexual activity with them. Therefore, if GBL (and GHB) are linked to drug assisted sexual assault, it is punishable by up to 10 years imprisonment.
Illegal to supply for human consumption under medicines legislation