Hong Kong has made its first arrest over possession of the drug “space oil” after the substance was included under the city’s dangerous drugs law on Friday.

The Customs and Excise Department on Saturday seized one vape stick containing suspected space oil from a 28-year-old woman at the Hong Kong-Macau Ferry Terminal in Sheung Wan, according to a Sunday statement.

A vape stick containing the drug "space oil," pictured February 15, 2025. Photo: Customs and Excise Department.
A vape stick containing the drug “space oil,” pictured February 15, 2025. Photo: Customs and Excise Department.

The woman, who arrived from Macau, was arrested and had been released on bail pending further investigation, the statement said.

The government says space oil has become the third most common type of drug abused by the city’s youth under 21, behind cannabis and cocaine.

Containing a short-acting anaesthetic called etomidate, space oil is said by authorities to cause “transient euphoria.”

Dangerous drugs

The arrest took place a day after an amendment to the Dangerous Drugs Ordinance took effect.

It classified etomidate and five other similar substances as “dangerous drugs” under Hong Kong law, according to a Security Bureau statement last week.

See also: Hong Kong to add etomidate to dangerous drug list in 2025 in effort to crack down on ‘space oil’

The other substances included metomidate, propoxate, and isopropoxate – which are chemical analogues similar to etomidate – as well as butonitazene and bromazolam.

space oil
Capsules containing space oil displayed at a press conference by Hong Kong Customs on November 27, 2024. Photo: Kyle Lam/HKFP.

Trafficking and illicit manufacturing of the substances carries a maximum penalty of life imprisonment and a HK$5 million fine, while possession and consumption comes with a maximum penalty of seven years’ imprisonment and a fine of HK$1 million, according to the Security Bureau’s statement.

The amendment is set to be scrutinised by the Legislative Council later under the “negative vetting” procedure. A separate order to crack down on 18 chemical ingredients used to make the six drugs will take effect on April 11 this year.

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James Lee is a reporter at Hong Kong Free Press with an interest in culture and social issues. He graduated with a bachelor’s degree in English and a minor in Journalism from the Chinese University of Hong Kong, where he witnessed the institution’s transformation over the course of the 2019 extradition bill protests and after the passing of the Beijing-imposed security law.

Since joining HKFP in 2023, he has covered local politics, the city’s housing crisis, as well as landmark court cases including the 47 democrats national security trial. He was previously a reporter at The Standard where he interviewed pro-establishment heavyweights and extensively covered the Covid-19 pandemic and Hong Kong’s political overhauls under the national security law.