Gamma Butyrolactone(GBL) is a water-miscible liquid with a weak characteristic odor. It is the simplest 4-carbon lactone. It is mainly used as an intermediate in the production of other chemicals, e.g. methyl-2-pyrrolidone. In humans GBL acts as a prodrug for γ-hydroxybutyric acid (GHB), and it is used as a recreational CNS depressant with effects similar to those of barbiturates
Dangers gbl drug
If taken undiluted by mouth, GBL can cause esophageal and gastro-intestinal irritation. It is possible for oral ingestion of GBL to cause nausea and other similar problems, possibly more so than with GHB.
GHB has biphasic effects, an euphoric effect at low doses (the reason for the term liquid ecstasy), and a sedative effect at higher doses. As a result of this sedation it can cause unconsciousness. When combined with alcohol the increased sedation and risk of vomiting results in a high risk of fatality. Many harm reduction organisations suggest never mixing the two drugs as a result.
There have been news reports of several deaths associated with GBL, usually in combination with alcohol or other depressants.
Dose of gbl drug
A milliliter of pure GBL metabolizes to the equivalent 1.65 g of NaGHB, the common form, so doses are measured in the single milliliter range, either taken all at once or sipped over the course of a night.
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