At a Glance
| GBL | 1,4-Butanediol | |
|---|---|---|
| Class | Depressant | Depressant |
| Common Dose (oral) | 0.9–1.5 mL | 1–2.5 mL |
| Total Duration | 0.6–1.2 hrs | 1.3–3 hrs |
| Routes | oral | oral |
| Effects | 12 documented | 11 documented |
Dosage
oral
| Level | GBL | 1,4-Butanediol |
|---|---|---|
| Threshold | 0.3 mL | 0.5 mL |
| Light | 0.3–0.9 mL | 0.5–1 mL |
| Common | 0.9–1.5 mL | 1–2.5 mL |
| Strong | 1.5–3 mL | 2.5–4 mL |
| Heavy | 3 mL | 4 mL |
Duration
oral
GBL
oral
Peak
Afterglow
Onset: 3 min – 10 minCome Up: 5 min – 15 minPeak: 30 min – 45 minOffset: 15 min – 30 minAfterglow: 1 hrs – 3 hrs
Total: 1 hrs – 2 hrs
1,4-Butanediol
oral
Peak
Effects
Shared Effects9
Safety
Interaction: GBL + 1,4-Butanediol
No direct interaction data available between these substances. This does not mean the combination is safe.
Frequently Asked Questions
What is the difference between GBL and 1,4-Butanediol?
GBL is classified as a Depressant (Lactone) while 1,4-Butanediol is classified as a Depressant (Alkanediol, Diol). They share 9 effects in common, with 3 effects unique to GBL and 2 unique to 1,4-Butanediol.
Is it safe to combine GBL and 1,4-Butanediol?
There is no direct interaction data available for combining GBL and 1,4-Butanediol. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, GBL or 1,4-Butanediol?
At common doses via oral, GBL is typically dosed at 0.9–1.5 mL while 1,4-Butanediol is dosed at 1–2.5 mL. However, "stronger" depends on context — potency, subjective intensity, and duration all factor in. These substances have different pharmacological profiles and comparing raw potency is not straightforward.