They were charged with "conspiracy with intent to distribute heroin".
The men were charged, tried and convicted for conspiracy to distribute heroin and cocaine.
The defendants will be charged with conspiracy to distribute heroin, officials said.
According to law enforcement reporting, a wide range of criminal groups, gangs, and independent dealers distribute heroin throughout the country.
While on trial, Redd has admitted to being involved in the process to distribute heroin.
Jackson entered a guilty plea to conspiracy to distribute heroin in March 2012 and was sentenced to 12 months in prison.
Vietnamese criminal groups have been involved in distributing heroin in Australia.
All were charged with conspiracy to distribute heroin.
However, Bruno did allow other gangs to distribute heroin in Philadelphia for a share of the proceeds.
Proposals to have doctors offer people help in taking drugs or, even worse, proposals to distribute heroin are just as alien to us.