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GHB, GBL and 1,4-BD

Group: Depressants
Nicknames: GHB - 'G, Liquid ecstasy, Liquid X, Easy Lay, Cherry Meth, Scoop, Organic Quaalude, Fantasy’. GBL - ‘Midnight blue, Blue nitro, Alloy Cleaner, Magic Stripper
Last reviewed: October 2026

Harm Reduction

The difference between a recreational dose and an overdose is very small. It’s recommended to assume you have GBL (the strongest of the three) and dose accordingly.

  • Start low, go slow: Take a small test dose and wait until you can feel the effects before taking more/anything else. The strength of GHB varies a great deal. It is therefore advisable to take a small amount at first in order to avoid unexpectedly taking more than intended. After use, there is likely to be a lack of energy for hours or even days.
  • Keep track: It is very easy to overdose on GHB receptor agonists. Measure doses accurately and write down when doses are consumed to avoid taking too much. Add food colouring to liquid containing G and do not leave unattended.
  • Try not to use alone: If something goes wrong, someone is there to get help
  • Be careful mixing: Mixing GHB receptor agonists with other depressants increases overdose risk – avoid if you can, otherwise take less of each, as they can increase the effects and risks
  • Carry naloxone: Some counterfeit benzos in the UK have been found to contain strong opioids
  • Test your stuff: You can’t tell by eye if you have GHB, GBL or 1,4-DB. Find out how to send a sample to WEDINOS for testing here: https://www.wedinos.wales or pick up some test strips at our Harm Reduction Hub
  • Avoiding spiking: The best way to protect yourself is to not accept a drink/drug unless you’ve seen it be prepared and you know the person. If you think you may have been “spiked”, it is best to stay with a trusted friend (not someone you have just met) and go to a safe place (your home/hospital/police station).
  • If you’ve been prescribed GHB (sodium oxybate) and you notice a tolerance starting to develop (you need to keep taking more to get the same effect) speak to your doctor – don’t just start increasing your dose yourself.
  • Don’t suddenly stop taking them, or you may start to experience symptoms of withdrawal: these can range from a return of your original symptoms (possibly even worse than before) to totally new symptoms.
  • If you have become physically dependent on GHB or a related drug, the symptoms of abruptly stopping are likely to be even worse. It’s important to get proper medical advice on how to reduce your intake slowly.
  • It’s also possible to become psychologically dependent on the drug (feeling like you need it all the time). If you think this is happening, see your doctor as soon as possible, but don’t suddenly stop taking it.

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