From CBS news:
Prosecutors' three-year investigation of Limbaugh began after he publicly acknowledged being addicted to pain medication and entered a rehabilitation program. They accused Limbaugh of "doctor shopping," or illegally deceiving multiple doctors to receive overlapping prescriptions, after learning that he received about 2,000 paink**lers, prescribed by four doctors in six months, at a pharmacy near his Palm Beach mansion."
"The warrant alleges that sometime between February and August 2003, Limbaugh withheld information from a medical practitioner from whom he sought to obtain a controlled substance or a prescription for a controlled substance. He had abused OxyContin and other paink**lers."
" He often made the case that drug crimes deserve punishment."
"Drug use, some might say, is destroying this country. And we have laws against selling drugs, pushing drugs, using drugs, importing drugs. ... And so if people are violating the law by doing drugs, they ought to be accused and they ought to be convicted and they ought to be sent up," Limbaugh said on his short-lived television show on Oct. 5, 1995.