Ummm... Spit, where did you get the idea that he lost his hearing because of Oxycontin use? He lost his hearing in a three-month period back in 2001 due to AIED. He wears a cochlear implant.
Limbaugh learning to listen again: Rush Limbaugh lost most of his hearing because of a rare disease, but the conservative icon says he has not lost his ability to communicate with his audience | Insight on the News Newspaper | Find Articles at BNET
As far as your statement that he is a "current drug user", Limbaugh has also been undergoing random drug testing since his agreement with the Palm Beach Prosecutor's office in 2006 to drop the investigation, and has been clean since then. He also went through 5 weeks of drug rehab in 2003, when the investigation first started.
Rush Limbaugh Arrested On Drug Charges - CBS News
Where are you getting your information?
Elliot