Depressants
The narrowest margin between a recreational dose and unconsciousness of any common substance. GHB is an endogenous neurotransmitter, an FDA-approved narcolepsy medication, a euphoric social drug, and a substance with a dependence withdrawal syndrome that can kill you. The difference between a good time and a medical emergency is often less than one gram.
The Basics
GHB at a low dose (0.5–1.5g) produces euphoria, sociability, reduced inhibition, and a warm, relaxed feeling often compared to alcohol but cleaner and without the cognitive fog. At a slightly higher dose (2–3g+), it produces deep unconsciousness from which you cannot be roused. The distance between these two states can be less than half a gram — and concentration in liquid GHB varies, making volumetric dosing unreliable without knowing the exact concentration.
GHB is produced endogenously in the human brain — it's a natural neurotransmitter involved in sleep regulation. Sodium oxybate (Xyrem), pharmaceutical GHB, is FDA-approved for narcolepsy. The substance itself is pharmacologically interesting and has legitimate medical utility. The danger is entirely in the dosing margin and the combination risks.
⚠ GHB + alcohol or any depressant = medical emergency
GHB combined with alcohol, benzodiazepines, opioids, or any other CNS depressant dramatically increases the risk of respiratory depression, aspiration, and death. This combination narrows the already-thin safety margin to effectively zero. Many GHB-related deaths involve alcohol co-ingestion. If you use GHB, the absolute minimum rule is: no other depressants. Period.
The Science
GHB receptor
GHB has its own receptor — the GHB receptor — which is excitatory and may mediate the euphoric, prosocial, and stimulant-like effects at lower doses. This receptor is less understood than GABA-B and is an active area of research.
GABA-B agonism
At higher concentrations, GHB activates GABA-B receptors — producing the sedative, muscle-relaxant, and ultimately consciousness-suppressing effects. The switch from GHB receptor dominance to GABA-B dominance is the pharmacological explanation for the steep dose-response curve.
GH release
GHB significantly increases growth hormone release during sleep — which is why it was popular in bodybuilding communities. This effect is real and well-documented, though the muscle-building significance is debated.
Withdrawal syndrome
Chronic GHB use (especially round-the-clock dosing) produces physical dependence with a withdrawal syndrome resembling severe alcohol withdrawal: anxiety, tremors, tachycardia, psychosis, and seizures. GHB withdrawal can be fatal and requires medical management. It can last 5–15 days.
Harm Reduction
No alcohol. No exceptions. This is the single most important rule. GHB + alcohol is the combination that kills people. Even one drink significantly narrows the safety margin. If you've been drinking, do not take GHB. If you've taken GHB, do not drink.
Know your concentration. Liquid GHB varies wildly in concentration. A "capful" from one bottle may be 0.5g; from another, 3g. Without knowing the concentration, you're guessing — and the dosing margin doesn't accommodate guessing. A milligram scale and known concentration are the minimum for harm reduction.
Do not redose within 2 hours. GHB onset can take 15–45 minutes depending on stomach contents. If you don't feel it after 30 minutes, wait — don't take more. Stacking doses is the second most common cause of GHB emergencies after alcohol combination.
If someone "G's out" (loses consciousness): Recovery position immediately. Monitor breathing. Do not let them "sleep it off" without someone watching their breathing continuously. If breathing becomes labored, shallow, or stops — call 911. GHB unconsciousness typically resolves in 2–4 hours, but vomiting while unconscious is lethal if unmanaged.
Around-the-clock dosing creates severe dependence fast. Some users dose every 2–4 hours including through the night. This pattern produces physical dependence within weeks and a withdrawal syndrome that can include delirium, psychosis, and seizures. If you've been dosing GHB multiple times daily, do not stop abruptly — seek medical help for a supervised taper.
GHB and consent. GHB is associated with drug-facilitated sexual assault. Be cautious of drinks from unknown sources. If you suspect someone has been dosed without consent, seek medical attention immediately.
Tim's Take
[Tim's Take needed — your perspective on GHB, the dosing margin reality, the consent issue, the gap between its pharmacological profile and its cultural reputation, or whatever angle speaks to you.]
If you or someone you know needs support
SAMHSA: 1-800-662-4357 — 24/7, free, confidential. If someone is unconscious from GHB and you're unsure about their breathing — call 911. Good Samaritan laws protect you.
SAMHSA · 24/7 · Free · Confidential
Know Before You Go
No alcohol. This is the rule that keeps you alive. GHB + alcohol narrows the safety margin to zero.
Less than 1g separates euphoria from unconsciousness. Know your concentration. Use a scale.
Do not redose within 2 hours. Onset can be slow. Stacking doses causes emergencies.
If someone G's out: recovery position, monitor breathing, call 911 if breathing changes.
Withdrawal from chronic use can be fatal. Do not stop abruptly. Seek medical supervision.
SAMHSA: 1-800-662-4357 · 24/7 · Free · Confidential