A Symonston man and a Gungahlin woman have been charged following a seven-month police investigation into alleged drug trafficking across Canberra.

Both subject to existing bail conditions, police say the pair were involved in a drug-trafficking syndicate operating since at least August.

Officers searched the man’s Symonston home in October, where the woman was present. Police seized large quantities of allegedly illicit and controlled drugs, along with $8650 in cash.

The woman was arrested the following month and charged over her alleged involvement before being released on bail in December.

Police will also allege the man was involved in a family violence incident in June, when he administered prescription medication to the woman during a medical episode.

About 2am on April 4, the woman allegedly crashed into a streetlight on Gungahlin Drive in Kaleen and was seen throwing a bag into nearby bushes. Police later located the bag, which allegedly contained pharmaceutical medication and a notebook detailing drug sales.

She was arrested in Braddon address on April 13 and charged with drug supply, weapon possession and driving offences. She remains in custody.

Police searched the man’s Symonston home for the second time on Thursday, where they seized more than 60 drug items, including allegedly trafficable quantities of methylamphetamine and LSD, along with a large amount of pharmaceutical drugs.

During the search, officers located a woman unconscious inside the residence. She was treated by  paramedics after reportedly consuming methylamphetamine and 1,4-butanediol.

Police also allege evidence of drug importation from overseas was identified at the scene.

The man was arrested and charged with multiple offences, including 11 counts of drug supply, three counts of trafficking in a controlled drug other than cannabis, and family violence offences. He was also charged with possessing a commercial quantity of vaping goods and failing to comply with a court order relating to his electronic devices.

Police say further charges are expected.