A man and a woman, both in their 20s, have been arrested following raids on properties in Crumlin and Drimnagh.
Benzodiazepines, cocaine and heroin worth €135,000 were found during the searches yesterday.
The two people arrested are currently being held at Crumlin garda station.
A garda spokesman said: "As part of an intelligence led operation, Gardaí attached to Crumlin and Sundrive Garda Stations searched two properties in Crumlin and Drimnagh, Dublin 12 yesterday, Thursday 5 December 2019.
"During the course of the search a substantial quantity of benzodiazepines, cocaine and heroin (Subject to analysis), with an estimated street value of €135,000 was seized.
"A male and female, both in their 20s, were arrested in relation to this incident and are currently detained at Crumlin Garda Station under the provisions of Section 2 of the Criminal Justice (Drug Trafficking) Act 1996.