Is GBL legal in New Zealand?

Legal status

GBL (gamma-butyrolactone) is a named Class B controlled drug — it is listed by name in Schedule 2 (Class B) of the Misuse of Drugs Act 1975 alongside 1,4-butanediol and GHB, as a GHB prodrug. New Zealand scheduled the substance itself as a drug rather than treating it only as a precursor.

Consequences if caught

Possession, supply, importation and manufacture attract Class B penalties, with supply or manufacture drawing up to 14 years' imprisonment; because GBL is a GHB prodrug, recreational use falls squarely within controlled-drug offences.

If prescribed or medical

No medicinal use as GBL. Although GBL has genuine industrial-solvent applications, New Zealand scheduled the substance directly (Class B) instead of adopting an ingestion-based carve-out, so legitimate industrial handling requires authority under the Act and regulations.

Documentation

As a named Class B drug, importing or possessing GBL — including GBL-containing liquids — is a controlled-drug offence; this represents the drug-scheduling end of the spectrum, contrasting with the industrial carve-out models used elsewhere.

Drug laws and enforcement change and vary within a country. This is not legal advice. Always confirm with New Zealand’s embassy or official drug authority before traveling; penalties can be severe, including imprisonment.