depressant
GHB / GBL dosage 2026: safe ranges by route and weight.
GHB / GBL has 1 documented route of administration. The most common is oral. Always start at the lowest dose range and wait the full onset window before redosing.
Dose ranges by route.
Oraal
- Drempel
- 0.5 g
- Licht
- 0.5–1 g
- Normaal
- 1–2.5 g
- Sterk
- 2.5–4 g
- Zwaar
- 4 g
| Toedieningsweg | Drempel | Licht | Normaal | Sterk | Zwaar |
|---|---|---|---|---|---|
| Oraal | 0.5 g | 0.5–1 g | 1–2.5 g | 2.5–4 g | 4 g |
Begin onderaan. Lichaam, tolerantie en combineren doen er allemaal toe.
Duration timeline.
Oraal
totaal ~ 510 min- Opkomst
- 10–30 min
- Piek
- 45–90 min
- Afbouw
- 1.5–2.5h
- Nawerking
- 2–4h
Related pages
FAQ.
- What is a safe GHB / GBL dose?
- A "safe" dose depends on body weight, tolerance, set and setting. Start at the threshold or light range for your chosen route and do not redose until onset is complete.
- How do I calculate GHB / GBL dose by weight?
- For substances where bodyweight matters: divide the mg amount by your weight in kg to get the mg/kg ratio. Most common dose data assumes a 70–80 kg adult.
- What happens if I take too much GHB / GBL?
- Exceeding the "heavy" range significantly increases risk of adverse effects, medical emergency, or overdose. Harm reduction starts with knowing the ranges.
- How long does GHB / GBL last?
- Duration varies by route. The timeline section below shows onset, peak, offset and after-effects for each route.
- Can I mix GHB / GBL with other substances?
- Many combinations are dangerous. Check the interaction checker tool before combining anything. Never combine on a first experience.
- Is GHB / GBL dosage the same for all routes?
- No. Bioavailability differs significantly by route — intranasal and IV routes typically require lower doses than oral for equivalent effect.
- Should I weigh my GHB / GBL dose?
- Always. A milligram scale (0.001g precision) is essential for most substances. Volumetric dosing with a solvent is the gold standard for sub-10mg doses.