What drug did shannon hoon die from?

Answer 1

I believe he overdosed on cocaine

"I'm sure that Shannon, being the lead singer and leader of the band, was very much in control of what was going on." Within days of Bobolu's leaving the tour, Hoon was found dead. Though widely reported as a heroin overdose at the time, the substance that ultimately carried Hoon off was cocaine.

bobalu was the dude that was hired to 'babysit' hoon, instead of sticking it in out in rehab like he should have.