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(Also known as G, Gina, Liquid E, Liquid X, Blue Verve, Charisma, Gamma-O)

GHB (Gamma-hydroxybutyrate) and GBL (Gamma-butyrolactone) are substances commonly used in chemsex and club settings for their relaxing, euphoric, and pro-sexual effects. While some use them to feel more confident, connected, or to “come down” after stimulants, dose control is critical — small changes can quickly lead to overdose.

 

How It Works in the Body

GHB/GBL is primarily a central nervous system (CNS) depressant, but at low doses, it can cause mild stimulant-like effects.

Effect Stage Timeline
Onset 15 – 20 minutes
Peak effects 30 – 60 minutes
Duration 3 – 4 hours
Half-life 20 – 30 minutes
Urine Detection Usually undetectable after 12 hours

Most of the substance is broken down and exhaled — only a small amount remains in urine unless in overdose situations.

BDO are known to have longer onset time and easier to cause overdosed reaction.

How GHB/GBL Is Used

The most common method is drinking — G is usually mixed into juice or soda to mask the salty taste. People often measure doses in milliliters (mL).

Route Notes
Oral (most common) Mixed in drinks, salty taste, measured by mL
Snorting Rare – GHB is usually a liquid
Injection Very rare – High risk of overdose and infections
Mucosal Fast absorption (e.g. rectal), but significantly raises overdose risk.

G is extremely dose-sensitive. A dose that feels good one day might feel too strong the next.

Desired Effects

People use GHB/GBL for different reasons — to feel good, let go of inhibitions, or connect sexually. Some also use it to ease anxiety or help come down from stimulants like meth.

Dose Range Common Effects
Low (0.5–1.5 mL) Euphoria, relaxation, sociability, confidence
Moderate (1.5–2.5 mL) Disinhibition, increased libido, dizziness, nausea
High (2.5+ mL) Deep sedation, confusion, blackouts, vomiting, loss of consciousness
Disclaimer: This post is intended to provide information on s for harm reduction purpose. It does not advocate for or promote the use of any illicit substances