DAWN raids have resulted in a further 10 arrests and seizures of drugs.
Police stormed 11 houses across the city, in the latest wave of hard-hitting Operation Centaur.
The operation launched last week and, on its first day, led to 11 arrests, stacks of cash being seized and a haul of drugs.
On Friday, six people were arrested when seven Wearside addresses were searched.
And on Monday, a further eight people were arrested.
The latest raids on Tuesday bring the total of arrests – which are all in connection to suspected drugs offences – to 35.
To date drugs including cocaine, heroin and cannabis have been seized.
Police chiefs have pledged to continue to target dealers as part of their war on drugs.
Superintendent Alan Veitch, of Sunderland area command, said: “We believe drugs play a huge part in other types of crime, such as burglary and theft.
“By disrupting the supply we’re also helping to combat these types of crimes and making our communities even safer.
“This operation should act as a warning to anyone suspected of being involved in supplying drugs that we are closing in on them.
“Our message is simple. If you’re involved in drugs and drug supply we will take action to make sure you face the consequences.
“We make absolutely no apology in taking this tough stance to tackling crime and protecting our communities.”
Coun Tom Foster, chairman of the Safer Sunderland Partnership, added: “Drugs and drug dealing has a detrimental effect on our communities and we will continue to work in partnership to stop those responsible and make Sunderland even safer.”
Anyone who has any information about drugs and drugs in their area should phone police on 03456 043 043 or Crimestoppers anonymously on 0800 555 111.