Injecting Seroquel is very dangerous,My friend was secretly injecting Seroquel in 2005 and ended up going into a coma and had severe heart valve inflammation and damage due to injecting the seroquel with it's talc and other pill binding agents..He died after a while,he was brain dead and they took him off the ventalator,pulled the plug, seroquel in my opinion is strong enough with out risking coma and heart damage by injecting it, and what a waste of cocaine that is,,prisoners would be hard up to mix Seroquel with cocaine in an injection,,in my experience heroin was easy to get in jail/prison and cocaine was not so much,but heroin is very costly in prison like 10 times the street price and cocaine would no doubt be the same,,and since clean needles are hard to get in jail, most prisons have more methamphetamine and heroin and some cocaine,at least in the mid-west,south,west coast to my knowledge...Eat the Seroquel after shooting the coke i say ....I can see why they are using seroquel instead of heroin becuase of the cost..but thte cocaine is costly inside also ,so they would be better off just doing heroin inside and saying fuck the cocaine,,