(G, Gina, liquid ecstasy)

GHB and GBL are depressant drugs. GBL is not psychoactive itself, when it’s taken the body converts it into GHB so the effects and risk are largely the same. GHB and GBL usually come as liquids but GHB is occasionally available in powder form. GHB/GBL are most commonly used by men who have sex with men during chemsex but both are gaining popularity in the wider party scene.

Effects | Dosage | Advice | Support


The effects of GHB/GBL take between 5-25 minutes to kick in and will last for 2-4 hours. The effects of GHB/GBL are highly dose dependent. GHB/GBL are taken orally as a clear, oily liquid.


Dosing accurately is incredibly important with GHB/GBL as the difference between a dose that will produce a pleasant experience and an overdose can be tiny. However, GHB and GBL are often sold interchangeably and sold in solutions of varying strengths which means it’s quite difficult to give an accurate dosing guide.

As with most drugs, dosage will depend on a number of factors including tolerance, gender and body weight.

Most people would say that a good starting dose is 0.5-1ml. The best advice we can give is to start at the lower end of this due to variations in strength and risks involved.

If you’re going to redose, wait at least two hours (preferably more).

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