The convictions and sentencing follow a police operation lasting a number of months last year, code named Operation Chilon.
In August 2012, following police searches at various properties in Renfrewshire, Lanarkshire and Dunbartonshire, a large quantity of heroin and cannabis was discovered, with a street value of approximately £150,000.
Additionally, a large amount of mixing agent was recovered which, if mixed with the heroin, could have brought a profit of £1.4 million.
At Glasgow Sheriff Court yesterday, gang leader Michael Queen, 28, was sentenced to 11 years.
Christopher Gillespie, 35, Thomas Robertson, 32, William Woods, 34, and Jamie Woods, 24, were all jailed for their part in organised crime.
Detective Chief Inspector Paul Donaldson, of Police Scotland's Organised Crime and Counter Terrorism unit, said: "Serious organised crime and the criminality associated with it is an absolute scourge on our society and we will continue to relentlessly pursue those involved to bring them to justice."