Two men, aged 33 and 34, were arrested and charged in connection with the incident.
Officers also recovered a four-figure sum of cash after targeting a property in Dundee on Monday.
Michael O’Neill, 30, was caught by officers with more than 500g of cocaine in his car last October.
Three men are due in court at a later date over the discoveries in East Lothian.
Two men - aged 29 and 31 - have been charged in connection with the discovery in West Dunbartonshire.
Five kilos of the class A drug was found in James Munro’s kitchen in Glasgow.
Researchers interviewed 1469 people who inject drugs for study led by Glasgow Caledonian University.
Crime minister Kit Malthouse branded plans for a safe injecting facility in Glasgow 'a distraction'.
The public health approach comes as UK and Scottish governments prepare to host drug summits.
The meeting will bring together drug recovery experts, health professionals, government ministers and senior police officers.