ACT Police have seized $12,000 of what is believed to be synthetic cannabis from adult stores across Canberra.

Officers from the ACT Policing Drug Team raided shops in Fyshwick, Hume and Civic and seized approximately 200 packs of prohibited brands such as K2 (or Kronic), and Spice.

The items have been sent to the ACT Government Analytical Laboratory for testing.

No charges have been laid, but police are not ruling out further action.

It is the first time police have conducted raids searching for synthetic cannabis, saying that until now there had been no evidence it was being sold in the ACT.

A spokesman says police are working on intelligence-sharing and monitoring of synthetic cannabis with other police jurisdictions and the ACT Health Directorate.

Officers are also encouraging the public to come forward with any information about supply or distribution.