The Central Bureau of Investigation, working alongside a prosecutor, dismantled the lab in the southern city of Gliwice.
Krzysztof Wrzesiński, a spokesman for the bureau, said: “During the operation we detained a man. Everything indicates he was a 'chemist', directly supervising production.”
The suspect now faces up to 20 years in prison.
The Rzeczpospolita daily reported in August that the criminal underworld in Poland is moving away from natural drugs such as cocaine and heroin, and converting to the production of synthetic ones, which are similarly addictive but much cheaper to make.
The Central Bureau of Investigation busted 33 such facilities in the first eight months of this year.
Synthetic drugs such as clephedrone and mephedrone have a strong stimulative effect and are particularly popular during parties and nightclubs.
They are wrongfully considered by many users to be safe drugs. But experts warn that the consequences of an overdose can be tragic and may include impaired consciousness, increased blood pressure, hypothermia and sudden cardiac arrest.
In 2023, 16 people died in Poland from a clephedrone overdose.
