Quick info
GBL (gamma-butyrolactone) and BDO (1,4-butanediol) are GHB precursors, i.e. they are converted by the body into GHB (gamma-hydroxybutyric acid). GHB is closely related to the body's own gamma-aminobutyric acid (GABA) and activates certain GABA receptors. GABA is the most important inhibitory neurotransmitter in the brain and regulates, among other things, the sleep-wake rhythm, memory functions and growth hormones. Depending on the phase of action, dosage and individual metabolism, GHB/GBL/BDO can have a stimulating as well as a relaxing and calming effect. In medicine, GHB is used in the treatment of narcolepsy and in some countries also to treat withdrawal syndrome in alcohol addiction.
Extremely dose-dependent and varies greatly from person to person. The spectrum of effects ranges from euphoria, relaxation, disinhibition, increase in sexual desire, intensification of perception, urge to talk (babbling flash), slight dizziness and nausea, to drowsiness and deep sleep with unconsciousness (film rupture). GHB/GBL/BDO have a sexually stimulating effect and at the same time alter consciousness. Under the influence of these substances, you will assess situations differently. If you use GHB/GBL/BDO during sex, clarify boundaries, practices and protection with your sexual partners before use.
Onset of effect
10-20 min. after ingestion
Effective duration
1-3 hrs.
Aftereffects
2-4 hrs.
GHB and GBL are usually sold in liquid form, but GHB can also be found in powder form. The dosage of liquids depends on how diluted they are sold. Dosing GBL is even trickier than GHB, as not every body metabolizes the substance at the same rate. GBL is a strong acid that can corrode the mucous membranes and must be heavily diluted with a non-alcoholic drink before drinking.
If in doubt, the following applies: approach the dosage slowly to avoid unconsciousness and life-threatening consequences.
The dosage information is based on 100 % pure content.
Swallowed
Low dose
GHB: 1 - 2 ml (powder form: 0.5 - 1 gram)
GBL: 0.5 - 0.9 ml
BDO: 0.5 - 1.0 ml
Average dose
GHB: 2 - 3 ml (powder form: 1 - 2 grams)
GBL: 0.9 - 1.5 ml
BDO: 1.0 - 2.5 ml
High dose
GHB: 3 - 4 ml (powder form: 2 - 3 grams)
GBL: 1.5 - 2.0 ml
BDO: 2.5 - 4.0 ml
Narcotic dose
GHB: more than 4 ml (powder form: more than 3 grams)
GBL: more than 2.0 ml
BDO: more than 4.0 ml
Analyzed GHB: 75 %
1 ml liquid = 0.75 ml GHB
Desired quantity (ml) ÷ Purity = required ml of your liquid
For example, you want to take 2 ml of pure GHB (medium dose):
Calculation: 2 ÷ 0.75 = 2.66 ml
You would therefore need approx. 2.66 ml of your liquid.
The consumption of alcohol before, during or after GHB/GBL/BDO use can lead to collapse even with small amounts of alcohol (risk of respiratory paralysis!). Mixed consumption with antiretroviral drugs (protease inhibitors, e.g. Kaletra, Reyataz, Crixivan, Norvir, Invirase) can increase the effect of GHB/GBL in a life-threatening manner even at low doses (risk of respiratory depression, coma, epileptic seizures!).
The consumption of alcohol before, during or after GHB/GBL/BDO use can lead to collapse even with small amounts of alcohol (risk of respiratory paralysis!). Mixed consumption with antiretroviral drugs (protease inhibitors, e.g. Kaletra, Reyataz, Crixivan, Norvir, Invirase) can increase the effect of GHB/GBL in a life-threatening manner even at low doses (risk of respiratory depression, coma, epileptic seizures!).
Risk
This combination already poses a significant risk. The effects can reinforce each other or change in unpredictable ways. Therefore, use these substances with caution, test new or unfamiliar substances individually first, and keep the doses as low as possible. Allow sufficient time between doses and avoid taking additional doses on a whim. Be aware of the varying durations of action for each substance.
Lower risk
Learn about the substances, their effects, how quickly they take effect, and the proper dosage. Get to know each substance on its own first, and see how they affect you and whether they suit you before mixing them. Allow enough time between doses, mix as few substances as possible, and start with low doses.
Lower risk
Learn about the substances, their effects, how quickly they take effect, and the proper dosage. Get to know each substance on its own first, and see how they affect you and whether they suit you before mixing them. Allow enough time between doses, mix as few substances as possible, and start with low doses.
Lower risk
Learn about the substances, their effects, how quickly they take effect, and the proper dosage. Get to know each substance on its own first, and see how they affect you and whether they suit you before mixing them. Allow enough time between doses, mix as few substances as possible, and start with low doses.
Lower risk
Learn about the substances, their effects, how quickly they take effect, and the proper dosage. Get to know each substance on its own first, and see how they affect you and whether they suit you before mixing them. Allow enough time between doses, mix as few substances as possible, and start with low doses.
Risk
This combination already poses a significant risk. The effects can reinforce each other or change in unpredictable ways. Therefore, use these substances with caution, test new or unfamiliar substances individually first, and keep the doses as low as possible. Allow sufficient time between doses and avoid taking additional doses on a whim. Be aware of the varying durations of action for each substance.
Risk
This combination already poses a significant risk. The effects can reinforce each other or change in unpredictable ways. Therefore, use these substances with caution, test new or unfamiliar substances individually first, and keep the doses as low as possible. Allow sufficient time between doses and avoid taking additional doses on a whim. Be aware of the varying durations of action for each substance.
Risk
This combination already poses a significant risk. The effects can reinforce each other or change in unpredictable ways. Therefore, use these substances with caution, test new or unfamiliar substances individually first, and keep the doses as low as possible. Allow sufficient time between doses and avoid taking additional doses on a whim. Be aware of the varying durations of action for each substance.
Risk
This combination already poses a significant risk. The effects can reinforce each other or change in unpredictable ways. Therefore, use these substances with caution, test new or unfamiliar substances individually first, and keep the doses as low as possible. Allow sufficient time between doses and avoid taking additional doses on a whim. Be aware of the varying durations of action for each substance.
Risk
This combination already poses a significant risk. The effects can reinforce each other or change in unpredictable ways. Therefore, use these substances with caution, test new or unfamiliar substances individually first, and keep the doses as low as possible. Allow sufficient time between doses and avoid taking additional doses on a whim. Be aware of the varying durations of action for each substance.
If you or someone else needs urgent help after taking drugs or alcohol, call an ambulance on 144. Tell the emergency responders everything you know.
It could save lives.
