Nicholas Busbey
Nicholas Busbey (Boulder County Sheriff's Office)

The University of Colorado student who was arrested this week after a campus employee said she saw him sell a prescription pill to another student for $5 in the school's Center for Community was formally charged with a felony drug count Thursday.

Nicholas Busbey, 23, was charged with one count of distribution of a Schedule II controlled substance, a Class 3 felony.

Boulder County Judge David Archuleta read the charge to Busbey -- who has not yet hired an attorney -- at his appearance in the Boulder County Jail courtroom.

According to CU police, an employee in the lobby of the Center for Community said she saw Busbey sell Marshall Pedder, 21, a tablet of Vyvanse, a stimulant used to treat attention deficit hyperactivity disorder that also can be used as a "study aid" to help keep students up and alert as they prepare for exams.

Busbey -- who is free on a $5,000 personal recognizance bond -- declined to comment about the case at his hearing today.

Pedder also was arrested and could face a charge of possession of a controlled substance, a Class 6 felony. He is scheduled to appear in court April 4.