Thirteen Antelope Valley High School students were treated at a hospital Wednesday after taking illicitly obtained Ritalin, and about 150 of the prescription-only pills were confiscated on campus, authorities said.
Three became seriously ill from an overdose, officials said. The others showed symptoms of grogginess or incoherence. All had been released from Antelope Valley Hospital by evening.
"They are all OK," Principal Mark Bryant said.
Ritalin is given to hyperactive children to calm them down. Its possession is illegal without a doctor's prescription, Sheriff's Sgt. Patrick Atkins said. The Sheriff's Department launched an investigation to determine who was distributing the pills on campus, and criminal prosecution is possible, he said.
The first student became ill and fell during a flag-lowering ceremony in remembrance of the Sept. 11 tragedy. School officials called an ambulance and learned from his classmates that he had taken the pills. When two more students showed overdose symptoms of grogginess and incoherence, Bryant got on the public address system.