Former rap music mogul Marion "Suge" Knight collapsed in a courtroom today shortly after a judge ordered him held on bail of 25 million dollars (£16m) in a murder case.
Knight's lawyer Matthew Fletcher said his client, who is diabetic and has a blood clot, told him he had not received any medication since yesterday.
Mr Fletcher said Knight hit his head on a chair when he fell after the bail hearing.
Bailiffs cleared the courtroom and paramedics were seen going in a few minutes later.
Mr Fletcher said Knight was unconscious when the lawyer left the courtroom.
Knight fell while deputies were taking him back into court after Fletcher asked a judge to reconvene a hearing and issue an order that Knight be given his medication.
The lawyer said Knight is being kept in solitary confinement without proper access to medication.
"He's being treated worse than Charles Manson," Mr Fletcher said.
Judge Ronald S Coen set bail for Knight, who is accused of running down and killing a man with his car.
Judge Coen ordered the amount after deputy district attorney Cynthia Barnes said Knight was on bail in a robbery case when he struck two men in a car park in Compton.
The 49-year-old co-founder of Death Row Records has pleaded not guilty to murder, attempted murder and hit-and-run.