context: The son of a depressed but doting mother (Hope Davis) and a father who is serving time for tax evasion, wealthy teenager Charlie Bartlett (Anton Yelchin), - after being expelled from several private academies for various infractions - enrolls in a public school run by embittered alcoholic Principal Nathan Gardner (Robert Downey, Jr.), who was formerly a history teacher. Unable to fit in with most of his fellow students, Charlie forms an alliance with school bully Murphy Bivens (Tyler Hilton) and offers him half the proceeds from the sale of a variety of prescription drugs Charlie obtains by feigning physical and emotional symptoms during sessions with different psychiatrists.
  Before long, his natural charm and likability positions him as the school's resident therapist, who offers advice within the confines of the boys bathroom. Charlie's social life noticeably improves as he gains the confidence and admiration of the student body and begins to date the principal's rebellious daughter, Susan (Kat Dennings).
  Complications arise when seriously depressed Kip Crombwell (Mark Rendall) attempts suicide by swallowing a handful of anti-depressants provided by Charlie. Charlie befriends Kip after having an in-depth conversation with Principal Gardner. Charlie discovers Kip is writing a play about adolescent issues and pitches it to Gardner who is, at first, unsure but agrees when Kip says that it would make him less inclined to attempt suicide again. The students then have trouble with the student lounge; security cameras get installed, and they start a riot.
  One day, Charlie comes by Susan's house to pick her up for a date and he gives her a pharmacy bag. Mr. Gardner comes out, thinking the bag is full of "inappropriate items", and pushes Charlie, who then punches Gardner as a reflex. He tries to apologize, but the principal is not forgiving. Susan and Charlie drive off, and the bag turns out to contain nicotine gum, to help Susan quit smoking cigarettes.
  That night, the students are all in the student lounge when the cops arrive. They arrest Charlie for assault, Principal Gardner is fired, and the kids trash the lounge building. Charlie is released, and before the play, stops by Mr. Gardner's house to invite him. Charlie finds Mr. Gardner heavily intoxicated and waving a revolver. They get into a heated argument which culminates in Charlie falling into the pool after attempting to tackle Mr. Gardner, thinking he is about to commit suicide. Mr. Gardner, appearing sober, comes to his senses and dives into the pool to save Charlie and states that he was not attempting to commit suicide because he has too many responsibilities to do such a thing. They talk over their problems about Charlie's father and Susan, and then go to the play. Mr. Gardner takes up his old job as a history teacher again (and is now much happier), and Charlie finally gains the confidence to visit his father in prison (something he had felt uncomfortable about earlier in the film). The film ends with Charlie applying for a summer internship at a psychiatric institute.
question: What does Charlie hand out to students?
answer: anti-depressants